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Davis Strait, Canada
Taken on August 30, 2018 (uploaded 1/9/19)
The strait was first explored by John DAVIS, leader of three voyages 1585-87 organized by merchants of London, England.
www.thecanadianencyclopedia.ca/en/article/davis-strait
Davis Strait, situated between BAFFIN ISLAND and Greenland, is the entrance to BAFFIN BAY from the North Atlantic. It is a large stretch of water over 950 km across at its greatest width and never less than 300 km wide. At the narrowest point, its submarine topography consists of an undersea ridge, a continuation of the mid-Labrador ridge, extending from the coast of Baffin Island to Greenland. The shallowest waters in the strait are found along this sill, from 350 to 550 m deep, before plunging down to abyssal basins on either side.
Some of the greatest depths in the eastern Arctic are reached here (3660 m) in the southern end of the strait. The surface waters are strongly affected by counterclockwise-flowing currents.
Along the west side, an outflow of cold water from the Arctic Basin moves south, at flow velocities of 8-20 km/day, to feed the Labrador current. On the east side the west Greenland countercurrent brings warmer water north. Ice conditions reflect this flow regime, with heavy ice movement and icebergs along the western shore, contrasting sharply with more open water along the Greenland side.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Waterfowl such as ducks and geese have an interesting adaptation that prevents their feet from freezing while making contact with ice, snow, and very cold water. These species employ what is called countercurrent heat exchange, where blood from the body travels through an artery down the legs and makes close contact with a vein containing blood that has cooled in the feet and is traveling the opposite direction to the body. The warm arterial blood cools as it reaches the feet, causing the feet to become close in temperature to the cold surface or water and in turn, lowering the rate of heat exchange. Conversely, the cool venous blood circulating back up to the core is warmed, as to not lower the body temperature. This adaptation makes it possible for these animals to only lose around 5% of their body temperature through their feet.
Photo taken at Beus Pond, Ogden, Utah. Feb 10, 2020
Wikipedia, "Sea elephant" redirects here. For the superfamily of sea slugs, see Pterotracheoidea.
Elephant seals
Male and female northern elephant seals
Male and female southern elephant seals
Scientific classification Edit this classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Carnivora
Parvorder:Pinnipedia
Family:Phocidae
Tribe:Miroungini
Muizon, 1981
Genus:Mirounga
Gray, 1827
Type species
Phoca leonina
Species
M. angustirostris
M. leonina
Elephant seals or sea elephants are very large, oceangoing true seals in the genus Mirounga. Both species, the northern elephant seal (M. angustirostris) and the southern elephant seal (M. leonina), were hunted to the brink of extinction for lamp oil by the end of the 19th century, but their numbers have since recovered. Males can weigh up to 4,000 kilograms (8,800 lb). Despite their name, elephant seals aren't closely related to elephants, and the large proboscis/trunk that males of the species possess is an example of convergent evolution.
The northern elephant seal, somewhat smaller than its southern relative, ranges over the Pacific coast of the U.S., Canada and Mexico. The most northerly breeding location on the Pacific Coast is at Race Rocks Marine Protected Area, at the southern tip of Vancouver Island in the Strait of Juan de Fuca. The southern elephant seal is found in the Southern Hemisphere on islands such as South Georgia and Macquarie Island, and on the coasts of New Zealand, Tasmania, South Africa, and Argentina in the Peninsula Valdés. In southern Chile, there is a small colony of 120 animals at Jackson Bay (Bahía Jackson) in Admiralty Sound (Seno Almirantazgo) on the southern coast of Isla Grande de Tierra del Fuego.[1]
The oldest known unambiguous elephant seal fossils are fragmentary fossils of a member of the tribe Miroungini described from the late Pliocene Petane Formation of New Zealand.[2] Teeth originally identified as representing an unnamed species of Mirounga have been found in South Africa, and dated to the Miocene epoch;[3][4] however, Boessenecker and Churchill (2016) considered these teeth almost certainly to be misidentified toothed whale (odontocete) teeth.[2] The elephant seals evolved in the Pacific Ocean during the Pliocene period.[2][5][6]
Elephant seals breed annually and are seemingly habitual to colonies that have established breeding areas.[7]
Taxonomy
John Edward Gray established the genus Mirounga in 1827.[8] The generic name Mirounga is a Latinization of miouroung, which is said to have been a term for the seal in an Australian Aboriginal language. However, it is not known which language this represents.[9]
Description
Elephant seals are marine mammals of the clade Pinnipedia, which, in Latin, means feather- or fin-footed.[10] Elephant seals are in the family Phocidae (true seals, or earless seals).[11] Earless seals (Phocids) have no outer ear and reduced limbs.[11] The reduction of their limbs helps them be more streamlined and move easily in the water.[10] However, it makes moving on land more difficult because they cannot turn their hind flippers forward to walk like eared seals (Otariidae).[10] Also, the hind flippers of elephant seals have a large surface area, which helps propel them in the water.[10]
Elephant seals spend most of their life (90%) underwater in search of food, and can cover 100 kilometres (60 miles) a day when they head out to sea.[11] Newborn elephant seals can weigh up to 36 kilograms (79 pounds) and reach lengths up to 122 cm (4 ft 0 in).[11] Sexual dimorphism is extreme; male elephant seals weigh up to 10 times more than females,[12] and having a prominent proboscis.[11]
Elephant seals get their name from the large proboscis of the adult male (bull), reminiscent of an elephant's trunk, and considered a secondary sexual characteristic.[13] The bull's proboscis is used in producing extraordinarily loud roaring noises, especially during mating season. More importantly, however, the nose acts as a sort of rebreather, filled with cavities that reabsorb moisture from their exhalations.[14] This is important during mating season when the seals do not leave the beach to feed, and must conserve body moisture as there is no incoming source of water.
They are very much larger than other pinnipeds; southern elephant seal bulls typically reach a length of 5 m (16 ft) and a weight of 3,000 kg (7,000 lb), and are much larger than adult females (cows); some exceptionally large males reach up to 6 m (20 ft) in length and weigh 4,000 kg (9,000 lb); cows typically measure about 3 m (10 ft) and 900 kg (2,000 lb). Northern elephant seal bulls reach a length of 4.3 to 4.8 m (14 to 16 ft) and the heaviest weigh about 2,500 kg (5,500 lb).[15][16]
The northern and southern elephant seal can be distinguished by various external features. On average, the southern elephant seal is larger than the northern.[12] Adult male northern elephant seals of tend to have a larger proboscis, and thick chest area with a red coloration, compared to the southern species.[12] Females do not have the large proboscis and can be distinguished between species by looking at their nose characteristics.[12] Southern females tend to have a smaller, blunt nose compared to northern females.[12]
Extant species distributions
Genus Mirounga – Gray, 1827 – two species
Common nameScientific name and subspeciesRangeSize and ecologyIUCN status and estimated population
Northern elephant seal
Mirounga angustirostris
(Gill, 1866)Eastern Pacific Ocean
Map of rangeSize:
Habitat:
Diet: LC
Southern elephant seal
Mirounga leonina
(Linnaeus, 1758)Southern Ocean
Map of rangeSize:
Habitat:
Diet: LC
Physiology
Skull of a northern elephant seal
Elephant seals spend up to 80% of their lives in the ocean. They can hold their breath for more than 100 minutes,[17][18] longer than any other noncetacean mammal. Elephant seals regularly dive to 1,550 m (5,090 ft) beneath the ocean's surface;[17] the deepest recorded dives of the two species being 2,388 m (7,835 ft) for a southern elephant seal, and 1,735 m (5,692 ft) for a northern elephant seal.[19][20][21] The average depth of their dives is about 300 to 600 m (1,000 to 2,000 ft), typically for around 20 minutes for females and 60 minutes for males, as they search for their favorite foods, which are skates, rays, squid, octopuses, eels, small sharks and large fish. Their stomachs also often contain gastroliths. They spend only brief amounts of time at the surface to rest between dives (2–3 minutes).[11] Females tend to dive a bit deeper due to their prey source.[11]
Male elephant seals fighting for mates
Elephant seals are shielded from extreme cold more by their blubber than by fur. Their hair and outer layers of skin molt in large patches. The skin has to be regrown by blood vessels reaching through the blubber. When molting occurs, the seal is susceptible to the cold, and must rest on land, in a safe place called a "haul out". Northern males and young adults haul out during June to July to molt; northern females and immature seals during April to May.
Elephant seals have a very large volume of blood, allowing them to hold a large amount of oxygen for use when diving. They have large sinuses in their abdomens to hold blood and can also store oxygen in their muscles with increased myoglobin concentrations in muscle. In addition, they have a larger proportion of oxygen-carrying red blood cells. These adaptations allow elephant seals to dive to such depths and remain underwater for up to two hours.[22]
Unlike some other marine mammals, such as dolphins, elephant seals do not have unihemispheric slow-wave sleep. Instead they sleep deeply for a little less than 20 minutes at the time while sinking through the water to depths measured up to 377 meters. When being near the continental shelf, where the ocean is less deep, they will often reach bottom, which sometimes wakes them up. But more often they continue to sleep on the seabed. On average, they get about two hours of sleep a day over a period of seven months, which is among the lowest amount of sleep of any mammal.[23]
They are able to slow down their heartbeat (bradycardia) and divert blood flow from the external areas of the body to important core organs.[11] They can also slow down their metabolism while performing deep dives.[11]
Elephant seals have a helpful feature in their bodies known as the countercurrent heat exchanger to help conserve energy and prevent heat loss.[11] In this system, arteries and veins are organized in a way to maintain a constant body temperature by having the cool blood flowing to the heart warmed by blood going to external areas of the animal.[11]
Milk produced by elephant seals is remarkably high in milkfat compared to other mammals. After an initially lower state, it rises to over 50% milkfat (human breast milk is about 4% milkfat, and cow milk is about 3.5% milkfat).[24]
Adaptations
Elephant seals have large circular eyes that have more rods than cones to help them see in low light conditions when they are diving.[10][11] These seals also possess a structure called the tapetum lucidum, which helps their vision by having light reflected back to the retina to allow more chances for photoreceptors to detect light.[10]
Their body is covered in blubber, which helps them keep warm and reduce drag while they are swimming.[11] The shape of their body also helps them maneuver well in the water, but limits their movement on land.[11] Also, elephant seals have the ability to fast for long periods of time while breeding or molting.[11] The turbinate process, another unique adaptation, is very beneficial when these seals are fasting, breeding, molting, or hauling out.[11][further explanation needed] This unique nasal structure recycles moisture when they breathe and helps prevent water loss.[11]
Elephant seals have external whiskers called vibrissae to help them locate prey and navigate their environment.[11] The vibrissae are connected to blood vessels, nerves, and muscles making them an important sensing tool.[10]
Due to evolutionary changes, their ear has been modified to work extremely well underwater.[10] The structure of the inner ear helps amplify incoming sounds, and allows these seals to have good directional hearing due to the isolation of the inner ear.[10] In addition to these adaptations, tissues in the ear canal allow the pressure in the ear to be adjusted while these seals perform their deep dives.[10]
Breeding season
Northern Elephant Seal rookery at San Simeon, California.
Males arrive at potential breeding sites in spring, and fast to ensure that they can mate with as many females as possible.[11] Male elephant seals use fighting, vocalisations, and different positions to determine the dominant males.[11][25] By the time males reach eight to nine years of age, they have developed a pronounced long nose, in addition to a chest shield, which is thickened skin in their chest area.[11] They display their dominance by showing their noses, making loud vocalisations, and altering their postures.[11][25] They fight each other by raising themselves and ramming each other with their chests and teeth.[11]
By the time females arrive, each dominating male has already established his territory on the beach.[11] Females cluster in groups called harems, which consist of up to 50 females surrounding one alpha male.[11] Outside of these groups, a beta bull is normally roaming around on the beach.[11] The beta bull helps the alpha by preventing other males accessing the females.[11] In return, the beta bull might have an opportunity to mate with one of the females while the alpha is occupied.[11]
Birth on average only takes a few minutes, and the mother and pup have a connection due to each other's unique smell and sound.[11] The mothers will fast and nurse up to 28 days, providing their pups with rich milk.[11] For the last two to three days, however, females will be ready to mate, and the dominant males will pounce on the opportunity.[11] Males and females lose up to a third of their body weight during the breeding season.[11] The gestation period for females is 11 months, and the pupping seasons lasts from mid to late summer.[11] The new pups will spend up to 10 additional weeks on land learning how to swim and dive.[11]
Life history
The average lifespan of a northern elephant seal is 9 years, while the average lifespan of a southern elephant seal is 21 years.[26] Males reach maturity at five to six years, but generally do not achieve alpha status until the age of eight, with the prime breeding years being between ages 9 and 12. The longest life expectancy of a male northern elephant seal is approximately 14 years.
Females begin breeding at age 3–6, and have one pup per breeding attempt.[27] Most adult females breed each year.[28] Breeding success is much lower for first-time mothers relative to experienced breeders.[28] Annual survival probability of adult females is 0.83 for experienced breeding females, but only 0.66 for first-time breeders indicating a significant cost of reproduction.[28] More male pups are produced than female pups in years with warmer sea surface temperature in the northeastern Pacific Ocean.[29]
Females and males utilize different feeding strategies in order to maximize their reproductive success. Males feed in benthic regions with more abundant food sources, but also more abundant predators. Females feed in pelagic regions where they are less likely to find prey, but also less likely to be preyed upon. They employ these different strategies because the smaller females require less food, and with at most one pup a year it is also most important for them to have as many breeding seasons as possible in order to maximize reproductive success. On the other hand, males adopt a high risk but high reward strategy in the hopes of gaining as much mass as possible, and thus being able to have one extremely successful breeding season as an alpha.[30]
Molting
Warning sign seen in South Africa to protect molting seals while hauling out on land
Once a year, elephant seals go through a process called molting where they shed the outer layer of hair and skin.[11] This molting process takes up to a month to complete.[11] When it comes time to molt, they will haul out on land to shed their outer layer, and will not consume any food during this time.[11] The females and juveniles will molt first, followed by the sub adult males, and finally the large mature males.[11]
Predators
The main predators of elephant seals are killer whales and great white sharks.[11] Cookiecutter sharks can take bites from their skin.[11]
Milk stealing
Sheathbills, Skuas, Western Gulls, and African feral cats have been reported to steal milk from the elephant seals' teats.[31][32][33][34]
Status
The IUCN lists both species of elephant seal as being of least concern, although they are still threatened by entanglement in marine debris, fishery interactions, and boat collisions. Though a complete population count of elephant seals is not possible because all age classes are not ashore at the same time, a 2005 study of the California breeding stock estimated approximately 124,000 individuals.[35] The animal is protected in most countries where it lives. In Mexico, the northern elephant seal is protected in the Guadalupe Island Biosphere Reserve where it was rediscovered after being believed to be extinct.[36] Wikipedia
Il fiume Krka sorge sotto la cascata del ruscello Krcic e scorre attraverso la pianura di Knin entrando in un kanyon lungo 50Km (profondo in alcuni punti anche 200m) formandovi una serie di cascate e di laghi. La cascata più grande è alta 26m e si trova nel corso superiore della Krka, mentre il lago più grande è quello di Visovac al centro del quale, su un'isola, sorge un monastero francescano. Controcorrente a questo isolotto si apre la cascata di Skradinski buk con i suoi 17 gradini, quindi la Krka confluisce nel lago Prikljansko formando un'ampia gola fino alla sua foce nel mare.
The river Krka rises under the fall of the brook Krcic and flows through the lowland of Knin entering a kanyon along 50Km (It also lavish in some points 200m) forming a series of falls and lakes. The greatest fall is tall 26m and is found in the superior progress of the Krka, while the greatest lake is that of Visovac to the center of which, on an island, a Franciscan monastery rises. Countercurrent in this islet opens the fall of Skradinski buk with its 17 steps, therefore the Krka meets in the lake Prikljansko forming an ample throat up to her mouth in the sea.
El río Krka surge bajo la catarata del arroyo Krcic y corre por el llano de Knin entrando en un kanyon largo 50Km, profundo en algunos también apuntas 200m, formándovos una serie de cataratas y lagos. La catarata más grande es alta 26m y se encuentra en el curso superior del Krka, mientras que el lago más grande es aquel de Visovac al centro del que, sobre una isla, surge un monasterio franciscano. Contracorriente a este islote se abre la catarata de Skradinski buk con los suyos 17 peldaños, por lo tanto el Krka confluye en el lago Prikljansko formando una amplia garganta hasta su desembocadura en el mar.
Million MAGA March Gathering Rally at Freedom Plaza at 14th Street and Pennsylvania Avenue, NW, Washington DC on Saturday morning, 14 November 2020 by Elvert Barnes Photography
Visit MILLION MAGA MARCH website at www.millionmagamarch.us/
Elvert Barnes PRESIDENTAL ELECTION 2020 docu-project at elvertbarnes.com/Election2020.html
Elvert Barnes COVID-19 Pandemic / Part 3 / Fall 2020 docu-project at elvertbarnes.com/CV19Fall2020.html
Elvert Barnes Saturday, 14 November 2020 Million MAGA MARCH in support of Donald Trump docu-project at elvertbarnes.com/14November2020.html
Published at countercurrents.org/2025/11/how-maga-hijacked-patriotism-...
Have you ever wondered why birds' feet don't freeze (or otherwise feel cold to them like ours do with us)?
Their bodies cool the blood that circulates down their legs and into their feet, then rewarms it as it returns to the body before it reaches the heart.
It's call the countercurrent heat exchange system.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
This photo was taken on February 8th, 2022 in Tinley Park IL. It is a picture of male and female Mallards (Anas platyrhynchos) that I saw walking along and swimming in a frozen lake near a trail. Many species of ducks and other water birds have gone through various adaptations to help them survive in cold temperatures, one of these adaptations can be seen in their feathers. A duck’s feathers are buoyant, waterproof and work with the layers of fat in their bodies as insulation to keep them warm. Another way Mallards have dealt with the cold is through the development of countercurrent blood flow present in their legs. The artery that carries warm blood to a duck’s legs and feet is in contact with a vein that returns blood to the heart. Heat travels across the membranes of these two vessels, transferring some heat from the arterial blood to the blood in the vein. This helps the duck maintain a higher body temperature than if cooled blood was constantly flowing from their feet back into the heart. Despite most birds migrating south during winter, these adaptations show how these ducks can still deal with cold weather if needed and how they are capable of swimming in the gaps of a frozen lake without freezing.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Il fiume Krka sorge sotto la cascata del ruscello Krcic e scorre attraverso la pianura di Knin entrando in un kanyon lungo 50Km (profondo in alcuni punti anche 200m) formandovi una serie di cascate e di laghi. La cascata più grande è alta 26m e si trova nel corso superiore della Krka, mentre il lago più grande è quello di Visovac al centro del quale, su un'isola, sorge un monastero francescano. Controcorrente a questo isolotto si apre la cascata di Skradinski buk con i suoi 17 gradini, quindi la Krka confluisce nel lago Prikljansko formando un'ampia gola fino alla sua foce nel mare.
The river Krka rises under the fall of the brook Krcic and flows through the lowland of Knin entering a kanyon along 50Km (It also lavish in some points 200m) forming a series of falls and lakes. The greatest fall is tall 26m and is found in the superior progress of the Krka, while the greatest lake is that of Visovac to the center of which, on an island, a Franciscan monastery rises. Countercurrent in this islet opens the fall of Skradinski buk with its 17 steps, therefore the Krka meets in the lake Prikljansko forming an ample throat up to her mouth in the sea.
El río Krka surge bajo la catarata del arroyo Krcic y corre por el llano de Knin entrando en un kanyon largo 50Km, profundo en algunos también apuntas 200m, formándovos una serie de cataratas y lagos. La catarata más grande es alta 26m y se encuentra en el curso superior del Krka, mientras que el lago más grande es aquel de Visovac al centro del que, sobre una isla, surge un monasterio franciscano. Contracorriente a este islote se abre la catarata de Skradinski buk con los suyos 17 peldaños, por lo tanto el Krka confluye en el lago Prikljansko formando una amplia garganta hasta su desembocadura en el mar.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Arctic Fox (Vulpes lagopus)
It is is a small fox native to Arctic regions of the Northern Hemisphere and is common throughout the Arctic tundra biome. The Arctic Fox lives in some of the most frigid extremes on the planet. Among its adaptations for cold survival are its deep, thick fur, a system of countercurrent heat exchange in the circulation of paws to retain core temperature, and a good supply of body fat. The fox has a low surface area to volume ratio, as evidenced by its generally rounded body shape, short muzzle and legs, and short, thick ears. Since less of its surface area is exposed to the Arctic cold, less heat escapes the body - en.wikipedia.org/wiki/Artic_fox
Point Defiance Zoo and Aquarium
March 25, 2011
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Parenchyme glandulaire de la glande rectale. Des faisceaux fibro-élastiques (collagène en bleu – l’élastine requérant souvent une coloration spécifique), issus de la capsule, divisent la glande en lobules (conjonctif interlobulaire) et entourent les tubules sécréteurs (1). L'artère principale de la glande se résout en artérioles au niveau de la capsule qui envahissent le parenchyme en tant que capillaires sinusoïdes (2). C'est à partir de ces capillaires quel le NaCl en excès sera prélevé par les cellules épithéliales avant son passage dans la lumière des tubules. Les capillaires confluent en une veine rectale qui deviendra la veine intestinale dorsale. Au niveau des tubules sécréteurs, capillaires sinusoïdes et sécrétion salée sont disposés à contre-courant, dispositif très efficace contribuant
à l’élaboration d’une solution en sels concentrée.
- Pour plus de détails ou précisions, voir « Atlas of Fish Histology » CRC Press, ou « Histologie illustrée du poisson » (QUAE) ou s'adresser à Franck Genten (fgenten@gmail.com)
------------------------------------------------------------------------------------------
Glandular parenchyma of rectal salt gland. Delicate
strands of fibroelastic tissue (collagen in blue) coming
from the capsule invade the glandular portion
and surround the secretory tubules (1). The rectal gland has a rich blood supply from the rectal gland artery which breaks up into numerous arterioles. The latter penetrate into the glandular parenchyma as a system of blood sinusoids (2) from which secretory cells can remove relatively large amounts of NaCl. Capillaries finally coalesce as the rectal vein that emerges from the gland, becoming the dorsal intestinal vein. In the secretory tubules the fluid flows in the opposite direction to that of the blood in the capillaries thus constituting a efficient countercurrent exchange.
- For more information or details, see « Atlas of Fish Histology » CRC Press, or « Histologie illustrée du poisson » (QUAE) or contact Franck Genten (fgenten@gmail.com)
In countercurrent distillation (rectification) using a column, the rising vapour can enter into interactions with the condensate. In this manner, a fractional distillation, i.e. a distillation in several steps for the separation of substances with similar boiling points, can be performed in a single apparatus. If bubble tray columns are used condensate can be removed from the individual bubble trays.
Bei der Gegenstromdestillation (Rektifikation) mittels einer Kolonne kann der aufsteigende Dampf mit dem Kondensat in Wechselwirkung treten. Auf diese Weise kann eine fraktionierte Destillation, d.h. eine Destillation in mehreren Schritten zur Auftrennung von Substanzen mit ähnlichen Siedepunkten, in einer einzigen Apparatur erfolgen. Werden Glockenbodenkolonnen verwendet, so kann von den einzelnen Glockenböden Kondensat entnommen werden.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Summer coat
Arctic Fox (Vulpes lagopus)
It is is a small fox native to Arctic regions of the Northern Hemisphere and is common throughout the Arctic tundra biome. The Arctic Fox lives in some of the most frigid extremes on the planet. Among its adaptations for cold survival are its deep, thick fur, a system of countercurrent heat exchange in the circulation of paws to retain core temperature, and a good supply of body fat. The fox has a low surface area to volume ratio, as evidenced by its generally rounded body shape, short muzzle and legs, and short, thick ears. Since less of its surface area is exposed to the Arctic cold, less heat escapes the body - en.wikipedia.org/wiki/Artic_fox
Point Defiance Zoo and Aquarium
August 29, 2011
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
The Arctic Fox (Vulpes lagopus) is common through the Arctic tundra biome. They have adapted to live in some of the coldest regions of the world with their deep, thick fur (which is the warmest of all mammals), a system of countercurrent heat exchange in the circulation of paws to retain core temperature, and a good supply of body fat. THey tend to be monogamous in the mating season and have litters with 4-11 pups. They are oportunistic hunters though their normal prey is the lemming. Their fur is bright white in the winter to blend into the snow better and in the summer their coat is a dull brownish color.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Il fiume Krka sorge sotto la cascata del ruscello Krcic e scorre attraverso la pianura di Knin entrando in un kanyon lungo 50Km (profondo in alcuni punti anche 200m) formandovi una serie di cascate e di laghi. La cascata più grande è alta 26m e si trova nel corso superiore della Krka, mentre il lago più grande è quello di Visovac al centro del quale, su un'isola, sorge un monastero francescano. Controcorrente a questo isolotto si apre la cascata di Skradinski buk con i suoi 17 gradini, quindi la Krka confluisce nel lago Prikljansko formando un'ampia gola fino alla sua foce nel mare.
The river Krka rises under the fall of the brook Krcic and flows through the lowland of Knin entering a kanyon along 50Km (It also lavish in some points 200m) forming a series of falls and lakes. The greatest fall is tall 26m and is found in the superior progress of the Krka, while the greatest lake is that of Visovac to the center of which, on an island, a Franciscan monastery rises. Countercurrent in this islet opens the fall of Skradinski buk with its 17 steps, therefore the Krka meets in the lake Prikljansko forming an ample throat up to her mouth in the sea.
El río Krka surge bajo la catarata del arroyo Krcic y corre por el llano de Knin entrando en un kanyon largo 50Km, profundo en algunos también apuntas 200m, formándovos una serie de cataratas y lagos. La catarata más grande es alta 26m y se encuentra en el curso superior del Krka, mientras que el lago más grande es aquel de Visovac al centro del que, sobre una isla, surge un monasterio franciscano. Contracorriente a este islote se abre la catarata de Skradinski buk con los suyos 17 peldaños, por lo tanto el Krka confluye en el lago Prikljansko formando una amplia garganta hasta su desembocadura en el mar.
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
Il fiume Krka sorge sotto la cascata del ruscello Krcic e scorre attraverso la pianura di Knin entrando in un kanyon lungo 50Km (profondo in alcuni punti anche 200m) formandovi una serie di cascate e di laghi. La cascata più grande è alta 26m e si trova nel corso superiore della Krka, mentre il lago più grande è quello di Visovac al centro del quale, su un'isola, sorge un monastero francescano. Controcorrente a questo isolotto si apre la cascata di Skradinski buk con i suoi 17 gradini, quindi la Krka confluisce nel lago Prikljansko formando un'ampia gola fino alla sua foce nel mare.
The river Krka rises under the fall of the brook Krcic and flows through the lowland of Knin entering a kanyon along 50Km (It also lavish in some points 200m) forming a series of falls and lakes. The greatest fall is tall 26m and is found in the superior progress of the Krka, while the greatest lake is that of Visovac to the center of which, on an island, a Franciscan monastery rises. Countercurrent in this islet opens the fall of Skradinski buk with its 17 steps, therefore the Krka meets in the lake Prikljansko forming an ample throat up to her mouth in the sea.
El río Krka surge bajo la catarata del arroyo Krcic y corre por el llano de Knin entrando en un kanyon largo 50Km, profundo en algunos también apuntas 200m, formándovos una serie de cataratas y lagos. La catarata más grande es alta 26m y se encuentra en el curso superior del Krka, mientras que el lago más grande es aquel de Visovac al centro del que, sobre una isla, surge un monasterio franciscano. Contracorriente a este islote se abre la catarata de Skradinski buk con los suyos 17 peldaños, por lo tanto el Krka confluye en el lago Prikljansko formando una amplia garganta hasta su desembocadura en el mar.
once we rounded Blackaller, the wind died -- we tried to stay closer to shore, getting a bit of countercurrent to prevent the ebb tide from slurping us out under the Golden Gate Bridge -- and we were joined by some paddlers, who were moving much faster than we were...
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
www.countercurrents.org/eco-giles081206.htm
"...personal wealth distributed so unevenly-2%
of adults own more than 50% of world's assets..."
A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits known as "humps" on its back. The two surviving species of camel are the dromedary, or one-humped camel (C. dromedarius), which inhabits the Middle East and the Horn of Africa; and the bactrian, or two-humped camel (C. bactrianus), which inhabits Central Asia. Both species have been domesticated; they provide milk, meat, hair for textiles or goods such as felted pouches, and are working animals with tasks ranging from human transport to bearing loads.
The term "camel" is derived via Latin and Greek (camelus and κάμηλος kamēlos respectively) from Hebrew or Phoenician gāmāl.
"Camel" is also used more broadly to describe any of the six camel-like mammals in the family Camelidae: the two true camels and the four New World camelids: the llama, alpaca, guanaco, and vicuña of South America.
BIOLOGY
The average life expectancy of a camel is 40 to 50 years. A full-grown adult camel stands 1.85 m at the shoulder and 2.15 m at the hump. Camels can run at up to 65 km/h in short bursts and sustain speeds of up to 40 km/h. Bactrian camels weigh 300 to 1,000 kg and dromedaries 300 to 600 kg.
The male dromedary camel has in its throat an organ called a dulla, a large, inflatable sac he extrudes from his mouth when in rut to assert dominance and attract females. It resembles a long, swollen, pink tongue hanging out of the side of its mouth. Camels mate by having both male and female sitting on the ground, with the male mounting from behind. The male usually ejaculates three or four times within a single mating session. Camelids are the only ungulates to mate in a sitting position.
ECOLOGICAL AND BEHAVIORAL ADAPTIONS
Camels do not directly store water in their humps as was once commonly believed. The humps are actually reservoirs of fatty tissue: concentrating body fat in their humps minimizes the insulating effect fat would have if distributed over the rest of their bodies, helping camels survive in hot climates. When this tissue is metabolized, it yields more than one gram of water for every gram of fat processed. This fat metabolization, while releasing energy, causes water to evaporate from the lungs during respiration (as oxygen is required for the metabolic process): overall, there is a net decrease in water.
Camels have a series of physiological adaptations that allow them to withstand long periods of time without any external source of water. Unlike other mammals, their red blood cells are oval rather than circular in shape. This facilitates the flow of red blood cells during dehydration and makes them better at withstanding high osmotic variation without rupturing when drinking large amounts of water: a 600 kg camel can drink 200 L of water in three minutes.
Camels are able to withstand changes in body temperature and water consumption that would kill most other animals. Their temperature ranges from 34 °C at dawn and steadily increases to 40 °C by sunset, before they cool off at night again. Maintaining the brain temperature within certain limits is critical for animals; to assist this, camels have a rete mirabile, a complex of arteries and veins lying very close to each other which utilizes countercurrent blood flow to cool blood flowing to the brain. Camels rarely sweat, even when ambient temperatures reach 49 °C Any sweat that does occur evaporates at the skin level rather than at the surface of their coat; the heat of vaporization therefore comes from body heat rather than ambient heat. Camels can withstand losing 25% of their body weight to sweating, whereas most other mammals can withstand only about 12–14% dehydration before cardiac failure results from circulatory disturbance.
When the camel exhales, water vapor becomes trapped in their nostrils and is reabsorbed into the body as a means to conserve water. Camels eating green herbage can ingest sufficient moisture in milder conditions to maintain their bodies' hydrated state without the need for drinking.
The camels' thick coats insulate them from the intense heat radiated from desert sand; a shorn camel must sweat 50% more to avoid overheating. During the summer the coat becomes lighter in color, reflecting light as well as helping avoid sunburn. The camel's long legs help by keeping its body farther from the ground, which can heat up to 70 °C. Dromedaries have a pad of thick tissue over the sternum called the pedestal. When the animal lies down in a sternal recumbent position, the pedestal raises the body from the hot surface and allows cooling air to pass under the body.
Camels' mouths have a thick leathery lining, allowing them to chew thorny desert plants. Long eyelashes and ear hairs, together with nostrils that can close, form a barrier against sand. If sand gets lodged in their eyes, they can dislodge it using their transparent third eyelid. The camels' gait and widened feet help them move without sinking into the sand.
The kidneys and intestines of a camel are very efficient at reabsorbing water. Camel urine comes out as a thick syrup, and camel feces are so dry that they do not require drying when the Bedouins use them to fuel fires.
Camels' immune system differs from those of other mammals. Normally, the Y-shaped antibody molecules consist of two heavy (or long) chains along the length of the Y, and two light (or short) chains at each tip of the Y. Camels, in addition to these, also have antibodies made of only two heavy chains, a trait that makes them smaller and more durable. These "heavy-chain-only" antibodies, discovered in 1993, are thought to have developed 50 million years ago, after camelids split from ruminants and pigs.
GENETICS
The karyotypes of different camelid species have been studied earlier by many groups, but no agreement on chromosome nomenclature of camelids has been reached. A 2007 study flow sorted camel chromosomes, building on the fact that camels have 37 pairs of chromosomes (2n=74), and found that the karyotime consisted of one metacentric, three submetacentric, and 32 acrocentric autosomes. The Y is a small metacentric chromosome, while the X is a large metacentric chromosome.The hybrid camel, a hybrid between Bactrian and dromedary camels, has one hump, though it has an indentation 4–12 cm deep that divides the front from the back. The hybrid is 2.15 m at the shoulder and 2.32 m tall at the hump. It weighs an average of 650 kg and can carry around 400 to 450 kg, which is more than either the dromedary or Bactrian can. According to molecular data, the New World and Old World camelids diverged 11 million years ago. In spite of this, these species can still hybridize and produce fertile offspring. The cama is a camel–llama hybrid bred by scientists who wanted to see how closely related the parent species were. Scientists collected semen from a camel via an artificial vagina and inseminated a llama after stimulating ovulation with gonadotrophin injections. The cama has ears halfway between the length of camel and llama ears, no hump, longer legs than the llama, and partially cloven hooves. According to cama breeder Lulu Skidmore, cama have "the fleece of the llamas" and "the strength and patience of the camel". Like the mule, camas are sterile, despite both parents having the same number of chromosomes.
EVOLUTION
The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota. By 35 million years ago, the Poebrotherium was the size of a goat and had many more traits similar to camels and llamas. The hoofed Stenomylus, which walked on the tips of its toes, also existed around this time, and the long-necked Aepycamelus evolved in the Miocene.
The direct ancestor of all modern camels, Procamelus, existed in the upper Miocone and lower Pliocene. Around 3–5 million years ago, the North American Camelidae spread to South America via the Isthmus of Panama, where they gave rise to guanacos and related animals, and to Asia via the Bering land bridge. Surprising finds of fossil Paracamelus on Ellesmere Island beginning in 2006 in the high Canadian Arctic indicate the dromedary is descended from a larger, boreal browser whose hump may have evolved as an adaptation in a cold climate. This creature is estimated to have stood around nine feet tall.
The last camel native to North America was Camelops hesternus, which vanished along with horses, short-faced bears, mammoths and mastodons, ground sloths, sabertooth cats, and many other megafauna, coinciding with the migration of humans from Asia.
DOMESTICATION
Most camels surviving today are domesticated. Along with many other megafauna in North America, the original wild camels were wiped out during the spread of Native Americans from Asia into North America, 12,000 to 10,000 years ago. The only wild camels left are the Bactrian camels of the Gobi Desert.
Like the horse, before their extinction in their native land, camels spread across the Bering land bridge, moving the opposite direction from the Asian immigration to America, to survive in the Old World and eventually be domesticated and spread globally by humans.
Dromedaries may have first been domesticated by humans in Somalia and southern Arabia, around 3,000 BC, the Bactrian in central Asia around 2,500 BC, as at Shar-i Sokhta (also known as the Burnt City), Iran.
Discussions concerning camel domestication in Mesopotamia are often related to mentions of camels in the Hebrew Bible. The International Standard Bible Encyclopedia: E-J for instance mentions that "In accord with patriarchal traditions, cylinder seals from Middle Bronze Age Mesopotamia showed riders seated upon camels."
Martin Heide's 2010 work on the domestication of the camel tentatively concludes that the bactrian camel was domesticated by at least the middle of the third millennium somewhere east of the Zagros Mountains, then moving into Mesopotamia, and suggests that mentions of camels "in the patriarchal narratives may refer, at least in some places, to the Bactrian camel." while noting that the camel is not mentioned in relationship to Canaan.
Recent excavations in the Timna Valley by Lidar Sapir-Hen and Erez Ben-Yosef discovered what may be the earliest domestic camel bones found in Israel or even outside the Arabian peninsula, dating to around 930 BCE. This garnered considerable media coverage as it was described as evidence that the stories of Abraham, Joseph, Jacob and Esau were written after this time.
The existence of camels in Mesopotamia but not in Israel is not a new idea. According to an article in Time Magazine, the historian Richard Bulliet wrote in his 1975 book "The Camel and the Wheel" that "the occasional mention of camels in patriarchal narratives does not mean that the domestic camels were common in the Holy Land at that period." The archaeologist William F. Albright writing even earlier saw camels in the Bible as an anachronism. The official report by Sapir-Hen and Ben-Joseph notes that "The introduction of the dromedary camel (Camelus dromedarius) as a pack animal to the southern Levant signifies a crucial juncture in the history of the region; it substantially facilitated trade across the vast deserts of Arabia, promoting both economic and social change (e.g., Kohler 1984; Borowski 1998: 112-116; Jasmin 2005). This, together with the depiction of camels in the Patriarchal narrative, has generated extensive discussion regarding the date of the earliest domestic camel in the southern Levant (and beyond) (e.g., Albright 1949: 207; Epstein 1971: 558-584; Bulliet 1975; Zarins 1989; Köhler-Rollefson 1993; Uerpmann and Uerpmann 2002; Jasmin 2005; 2006; Heide 2010; Rosen and Saidel 2010; Grigson 2012). Most scholars today agree that the dromedary was exploited as a pack animal sometime in the early Iron Age (not before the 12th century BCE)" and concludes that "Current data from copper smelting sites of the Aravah Valley enable us to pinpoint the introduction of domestic camels to the southern Levant more precisely based on stratigraphic contexts associated with an extensive suite of radiocarbon dates. The data indicate that this event occurred not earlier than the last third of the 10th century BCE and most probably during this time. The coincidence of this event with a major reorganization of the copper industry of the region - attributed to the results of the campaign of Pharaoh Shoshenq I - raises the possibility that the two were connected, and that camels were introduced as part of the efforts to improve efficiency by facilitating trade."
MILITARY USES
By at least 1200 BC, the first camel saddles had appeared, and Bactrian camels could be ridden. The first saddle was positioned to the back of the camel, and control of the Bactrian camel was exercised by means of a stick. However, between 500–100 BC, Bactrian camels attained military use. New saddles, which were inflexible and bent, were put over the humps and divided the rider's weight over the animal. In the seventh century BC, the military Arabian saddle appeared, which improved the saddle design again slightly.
Camel cavalries have been used in wars throughout Africa, the Middle East, and into modern-day Border Security Force of India (though as of July 2012, the BSF has planned the replacement of camels with ATVs). The first use of camel cavalries was in the Battle of Qarqar in 853 BC. Armies have also used camels as freight animals instead of horses and mules.
In the East Roman Empire, the Romans used auxiliary forces known as dromedarii, whom they recruited in desert provinces. The camels were used mostly in combat because of their ability to scare off horses at close ranges (horses are afraid of the camels' scent), a quality famously employed by the Achaemenid Persians when fighting Lydia in the Battle of Thymbra.
19th and 20th CENTURIES
The United States Army established the U.S. Camel Corps, which was stationed in California in the late 19th century. One may still see stables at the Benicia Arsenal in Benicia, California, where they nowadays serve as the Benicia Historical Museum. Though the experimental use of camels was seen as a success (John B. Floyd, Secretary of War in 1858, recommended that funds be allocated towards obtaining a thousand more camels), the outbreak of the American Civil War saw the end of the Camel Corps: Texas became part of the Confederacy, and most of the camels were left to wander away into the desert.
France created a méhariste camel corps in 1912 as part of the Armée d'Afrique in the Sahara in order to exercise greater control over the camel-riding Tuareg and Arab insurgents, as previous efforts to defeat them on foot had failed. The camel-mounted units remained in service until the end of French rule over Algeria in 1962.
In 1916, the British created the Imperial Camel Corps. It was originally used to fight the Senussi, but was later used in the Sinai and Palestine Campaign in World War I. The Imperial Camel Corps comprised infantrymen mounted on camels for movement across desert, though they dismounted at battle sites and fought on foot. After July 1918, the Corps began to become run down, receiving no new reinforcements, and was formally disbanded in 1919.
In World War I, the British Army also created the Egyptian Camel Transport Corps, which consisted of a group of Egyptian camel drivers and their camels. The Corps supported British war operations in Sinai, Palestine, and Syria by transporting supplies to the troops.
The Somaliland Camel Corps was created by colonial authorities in British Somaliland in 1912; it was disbanded in 1944.
Bactrian camels were used by Romanian forces during World War II in the Caucasian region.
The Bikaner Camel Corps of British India fought alongside the British Indian Army in World Wars I and II.
The Tropas Nómadas (Nomad Troops) were an auxiliary regiment of Sahrawi tribesmen serving in the colonial army in Spanish Sahara (today Western Sahara). Operational from the 1930s until the end of the Spanish presence in the territory in 1975, the Tropas Nómadas were equipped with small arms and led by Spanish officers. The unit guarded outposts and sometimes conducted patrols on camelback.
FOOD USES
DAIRY
Camel milk is a staple food of desert nomad tribes and is sometimes considered a meal in and of itself; a nomad can live on only camel milk for almost a month. Camel milk is rich in vitamins, minerals, proteins, and immunoglobulins; compared to cow's milk, it is lower in fat and lactose, and higher in potassium, iron, and vitamin C. Bedouins believe the curative powers of camel milk are enhanced if the camel's diet consists of certain desert plants. Camel milk can readily be made into a drinkable yogurt, as well as butter or cheese, though the yields for cheese tend to be low.
Camel milk cannot be made into butter by the traditional churning method. It can be made if it is soured first, churned, and a clarifying agent is then added. Until recently, camel milk could not be made into camel cheese because rennet was unable to coagulate the milk proteins to allow the collection of curds. Developing less wasteful uses of the milk, the FAO commissioned Professor J.P. Ramet of the École Nationale Supérieure d'Agronomie et des Industries Alimentaires, who was able to produce curdling by the addition of calcium phosphate and vegetable rennet. The cheese produced from this process has low levels of cholesterol and is easy to digest, even for the lactose intolerant. The sale of camel cheese is limited owing to the small output of the few dairies producing camel cheese and the absence of camel cheese in local (West African) markets. Cheese imports from countries that traditionally breed camels are difficult to obtain due to restrictions on dairy imports from these regions.
Additionally, camel milk has been made into ice cream in a Netherlands camel farm.
MEAT
A camel carcass can provide a substantial amount of meat. The male dromedary carcass can weigh 300–400 kg, while the carcass of a male Bactrian can weigh up to 650 kg. The carcass of a female dromedary weighs less than the male, ranging between 250 and 350 kg. The brisket, ribs and loin are among the preferred parts, and the hump is considered a delicacy. The hump contains "white and sickly fat", which can be used to make the khli (preserved meat) of mutton, beef, or camel. Camel meat is reported to taste like coarse beef, but older camels can prove to be very tough, although camel meat becomes more tender the more it is cooked. The Abu Dhabi Officers' Club serves a camel burger mixed with beef or lamb fat in order to improve the texture and taste. In Karachi, Pakistan, some restaurants prepare nihari from camel meat. In Syria and Egypt, there are specialist camel butchers.
Camel meat has been eaten for centuries. It has been recorded by ancient Greek writers as an available dish at banquets in ancient Persia, usually roasted whole. The ancient Roman emperor Heliogabalus enjoyed camel's heel.[31] Camel meat is still eaten in certain regions, including Eritrea, Somalia, Djibouti, Saudi Arabia, Egypt, Syria, Libya, Sudan, Ethiopia, Kazakhstan, and other arid regions where alternative forms of protein may be limited or where camel meat has had a long cultural history. Camel blood is also consumable, as is the case among pastoralists in northern Kenya, where camel blood is drunk with milk and acts as a key source of iron, vitamin D, salts and minerals. Camel meat is also occasionally found in Australian cuisine: for example, a camel lasagna is available in Alice Springs.
A 2005 report issued jointly by the Saudi Ministry of Health and the United States Centers for Disease Control and Prevention details cases of human bubonic plague resulting from the ingestion of raw camel liver.
RELIGION
ISLAM
Camel meat is halal for Muslims. However, according to some Islamic schools of thought, a state of impurity is brought on by the consumption of it. Consequently, these schools hold that Muslims must perform wudhu (ablution) before the next time they pray after eating camel meat.
Also, some Islamic schools of thought consider it haraam for a Muslim to perform salat in places where camels lie, as it is said to be a dwelling place of shaytan.
According to Suni ahadith collected by Bukhari and Muslim, Muhammad ordered a certain group of people to drink camel milk and urine as a medicine. However, according to Abū Ḥanīfa, the drinking of camel urine, while not forbidden (ḥaram), is disliked (makrūh) in Islam.
Camel urine is sold as traditional medicine in shops in Saudi Arabia. The Sunni scholar Muhammad Al-Munajjid's IslamQA.info recommends camel urine as beneficial to curing certain diseases and to human health and cited Ahadith and scientific studies as justification. King Abdulaziz University researcher Dr. Faten Abdel-Rajman Khorshid has claimed that cancer and other diseases could be treated with camel urine as recommended by the Prophet. The United Arab Emirates "Arab Science and Technology Foundation" reported that cancer could be treated with camel urine. Camel urine was also prescribed as a treatment by Zaghloul El-Naggar, a religious scholar. Camel urine is the only urine which is permitted to be drunk according to the Hanbali madhhab of Sunni Islam. The World Health Organization said that camel urine consumption may be a factor in the spread of the MERS virus in Saudi Arabia. The Gulf Times writer Ahmad al-Sayyed wrote that various afflictions are dealt with camel urine by people. Dandruff, scalp ailments, hair, sores, and wounds were recommended to be treated with camel urine by Ibn Sina. Arab American University Professor of Cell Biology and Immunology Bashar Saad (PhD) along with Omar Said (PhD) wrote that medicinal use of camel urine is approved of and promoted by Islam since it was recommended by the prophet. A test on mice found that cytotoxic effects similar to cyclophosphamide were induced on bone marrow by camel urine. Besides for consumption as a medicinal drink, camel urine is believed to help treat hair. Bites from insects were warded off with camel urine, which also served as a shampoo. Camel urine is also used to help treat asthma, infections, treat hair, sores, hair growth and boost libido.
Several Sunni Ahadith mention drinking camel urine. Some Shia criticized Wahhabis for camel urine treatment. Shia scholars also recommend the medicinal use of camel urine. Shia Hadith on Imam Ja'far al-Sadiq reported that shortness of breath (asthma) was treated with camel urine. Shia Marja Ayatollah Sistani said that for medicinal purposes only, sheep, cow, and camel urine can be drunk.
JUDAISM
According to Jewish tradition, camel meat and milk are not kosher. Camels possess only one of the two kosher criteria; although they chew their cud, they do not possess cloven hooves:
Nevertheless these shall ye not eat of them that only chew the cud, or of them that only part the hoof: the camel, because he cheweth the cud but parteth not the hoof, he is unclean unto you.
— Leviticus 11:4
DISTRIBUTION ANDNUMBERS
There are around 14 million camels alive as of 2010, with 90% being dromedaries. Dromedaries alive today are domesticated animals (mostly living in the Horn of Africa, the Sahel, Maghreb, Middle East and South Asia). The Horn region alone has the largest concentration of camels in the world, where the dromedaries constitute an important part of local nomadic life. They provide nomadic people in Somalia (which has the largest camel herd in the world) and Ethiopia with milk, food, and transportation.
The Bactrian camel is, as of 2010, reduced to an estimated 1.4 million animals, most of which are domesticated. The only truly wild Bactrian camels, of which there are less than one thousand, are thought to inhabit the Gobi Desert in China and Mongolia.
The largest population of feral camels is in Australia. There are around 700,000 feral dromedary camels in central parts of Australia, descended from those introduced as a method of transport in the 19th and early 20th centuries. This population is growing about 8% per year. Representatives of the Australian government have culled more than 100,000 of the animals in part because the camels use too much of the limited resources needed by sheep farmers.
A small population of introduced camels, dromedaries and Bactrians, wandered through Southwest United States after having been imported in the 1800s as part of the U.S. Camel Corps experiment. When the project ended, they were used as draft animals in mines and escaped or were released. Twenty-five U.S. camels were bought and imported to Canada during the Cariboo Gold Rush.
WIKIPEDIA
The Arctic Fox lives in some of the most frigid extremes on the planet. Among its adaptations for cold survival are its deep, thick fur,[4] a system of countercurrent heat exchange in the circulation of paws to retain core temperature, and a good supply of body fat. The fox has a low surface area to volume ratio, as evidenced by its generally rounded body shape, short muzzle and legs, and short, thick ears. Since less of its surface area is exposed to the Arctic cold, less heat escapes the body. Its furry paws allow it to walk on ice in search of food. The Arctic Fox has such keen hearing that it can precisely locate the position of prey under the snow. When it finds prey, it pounces and punches through the snow to catch its victim. Its fur changes color with the seasons: in the winter it is white to blend in with snow, while in the summer months it changes to brown.-Wikipedia
Arctic Fox (Vulpes lagopus)
It is is a small fox native to Arctic regions of the Northern Hemisphere and is common throughout the Arctic tundra biome. The Arctic Fox lives in some of the most frigid extremes on the planet. Among its adaptations for cold survival are its deep, thick fur, a system of countercurrent heat exchange in the circulation of paws to retain core temperature, and a good supply of body fat. The fox has a low surface area to volume ratio, as evidenced by its generally rounded body shape, short muzzle and legs, and short, thick ears. Since less of its surface area is exposed to the Arctic cold, less heat escapes the body - en.wikipedia.org/wiki/Artic_fox
Point Defiance Zoo and Aquarium
March 25, 2011
Completed in 1927, the San Carlos competed with 4 other hotels as the fashionable place to see and be seen In Phoenix. The San Carlos is still an operating hotel with a wonderful Irish pub named Seamus McCafferty's attached to it. And as you can see in the photo, it has survived among new development all around it. Those interested in history, please read on.
Mae West stayed here while starring at the Orpheum Theatre (which is just down the block) as did Clark Gable.
And it has its share of ghost stories. On May 7, 1928, Miss Leone Jenson, 22, apparently heartbroken from the lost love of a bell boy at a nearby hotel, ended her life by jumping off the roof of the seven story Hotel San Carlos - garbed in a smart evening gown, perfect for an evening of dancing. Since her death, sightings have been reported by witnesses who believe to have seen the white cloud of a woman's figure, accompanied by unexplainable breezes.There are confirmed reports that the ghosts of three young boys have been heard running through the halls of the San Carlos. The unexplained sounds of children laughing and running could be the ghostly presence from the first elementary schoolhouse located in Phoenix, where the hotel now sits. Furthermore, The San Carlos water well, originally built for the schoolhouse in 1874 and still operating in the hotel's basement, is believed to be the center of a countercurrent. Native Americans used the ground and underlying water sources as a site for worshipping the God of learning. Consequently, guests visiting the San Carlos claim to feel the spiritual aura of the historic water flow.
Il fiume Krka sorge sotto la cascata del ruscello Krcic e scorre attraverso la pianura di Knin entrando in un kanyon lungo 50Km (profondo in alcuni punti anche 200m) formandovi una serie di cascate e di laghi. La cascata più grande è alta 26m e si trova nel corso superiore della Krka, mentre il lago più grande è quello di Visovac al centro del quale, su un'isola, sorge un monastero francescano. Controcorrente a questo isolotto si apre la cascata di Skradinski buk con i suoi 17 gradini, quindi la Krka confluisce nel lago Prikljansko formando un'ampia gola fino alla sua foce nel mare.
The river Krka rises under the fall of the brook Krcic and flows through the lowland of Knin entering a kanyon along 50Km (It also lavish in some points 200m) forming a series of falls and lakes. The greatest fall is tall 26m and is found in the superior progress of the Krka, while the greatest lake is that of Visovac to the center of which, on an island, a Franciscan monastery rises. Countercurrent in this islet opens the fall of Skradinski buk with its 17 steps, therefore the Krka meets in the lake Prikljansko forming an ample throat up to her mouth in the sea.
El río Krka surge bajo la catarata del arroyo Krcic y corre por el llano de Knin entrando en un kanyon largo 50Km, profundo en algunos también apuntas 200m, formándovos una serie de cataratas y lagos. La catarata más grande es alta 26m y se encuentra en el curso superior del Krka, mientras que el lago más grande es aquel de Visovac al centro del que, sobre una isla, surge un monasterio franciscano. Contracorriente a este islote se abre la catarata de Skradinski buk con los suyos 17 peldaños, por lo tanto el Krka confluye en el lago Prikljansko formando una amplia garganta hasta su desembocadura en el mar.