South Africa - Hluhluwe–Imfolozi Park

Vervet monkeys

 

Südliche Grünmeerkatzen

 

Hluhluwe–Imfolozi Park, formerly Hluhluwe–Umfolozi Game Reserve, is the oldest proclaimed nature reserve in Africa. It consists of 960 km² (96,000 ha) of hilly topography 280 kilometres (170 mi) north of Durban in central KwaZulu-Natal, South Africa and is known for its rich wildlife and conservation efforts. The park is the only state-run park in KwaZulu-Natal where each of the big five game animals can be found.

 

Due to conservation efforts, the park in 2008 had the largest population of white rhino in the world.

 

Throughout the park there are many signs of Stone Age settlements. The area was originally a royal hunting ground for the Zulu kingdom, but was established as a park in 1895. The Umfolozi and Hluhluwe reserves were established primarily to protect the white rhinoceros, then on the endangered species list. The area has always been a haven for animals as tsetse flies carrying the nagana disease are common, which protected the area from hunters in the colonial era. However, as the Zululand areas was settled by European farmers the game was blamed for the prevalence of the tsetse fly and the reserves became experimental areas in the efforts to eradicate the fly. Farmers called for the slaughter of game and about 100,000 animals were killed in the reserve before the introduction of DDT spraying in 1945 solved the problem. However, white rhinoceros were not targeted and today a population of about 1000 is maintained. On April 30, 1995, the then President Nelson Mandela visited the then Hluhluwe Game Reserve to celebrate the park's centenary. Hluhluwe–Imfolozi was originally three separate reserves that joined under its current title in 1989.

 

The park is located in the province of KwaZulu-Natal on the east coast of South Africa. The park is closest to the town of Mtubatuba , Hluhluwe village and Hlabisa village. The geography of the area differs from the north, or Hluhluwe area, to the south, or Umfolozi area. Hluhluwe–Imfolozi Park is partly in a low-risk malaria area.

 

This Imfolozi area is situated between the two Umfolozi Rivers where they divide into the Mfolozi emnyama ('Black Umfolozi') to the north and the Mfolozi emhlophe ('White Umfolozi') to the south. This area is to the south of the park and is generally hot in summer, and mild to cool in winter, although cold spells do occur. The topography in the Umfolozi section ranges from the lowlands of the Umfolozi River beds to steep hilly country, which includes some wide and deep valleys. Habitats in this area are primarily grasslands, which extend into acacia savannah and woodlands.

 

The Hluhluwe region has hilly topography where altitudes range from 80 to 540 metres (260 to 1,770 ft) above sea level. The high ridges support coastal scarp forests in a well-watered region with valley bushveld at lower levels. The north of the park is more rugged and mountainous with forests and grasslands and is known as the Hluhluwe area, while the Umfolozi area is found to the south near the Black and White Umfolozi rivers where there is open savannah.

 

The park is home to Africa's big five game: elephant, rhinoceros (black/hook-lipped and white/square-lipped), Cape buffalo, lion and leopard. It is home to 86 special species including: Nile crocodile, hippo, cheetah, spotted hyena, blue wildebeest, jackal, giraffe, zebra, waterbuck, nyala, eland, kudu, impala, duiker, suni, reedbuck, common warthog, bushpig, mongoose, baboons, monkeys, a variety of tortoises, terrapins, snakes and lizards. It is one of the world's top spots for viewing nyala. The park is a prime birding destination and is home to 340 bird species. The Hluhluwe River Flood Plain is one of the only areas in the whole of South Africa where yellow-throated, pink-throated and orange-throated longclaw species can be seen together. Bird life include night heron, Wahlberg's eagle, Shelley's francolin, black-bellied korhaan, Temminck's courser, Klaas's cuckoo, little bee-eater and crested barbet.

 

The park has a diverse floral community.

 

In 1981, the Natal Parks board (now Ezemvelo KZN Wildlife) attempted to reintroduce African wild dogs into the park. Twenty-three dogs were released in the reserve, most of which had been bred in zoos. However this met with limited success and by 2015, the population had fluctuated between 3 and 30 individuals.

 

The park is the birthplace of rhino preservation, breeding the species back from extinction. As the home of Operation Rhino in the 1950s and 60s (driven largely by the park's warden, Ian Player), the park became world-renowned for its white rhino conservation. The Rhino Capture Unit of the park helped save the endangered White Rhino from the brink of extinction. As of 2008 there are more than 1,600 white rhino in the reserve and hundreds of the animals have been moved from here to game reserves around the world. The success of this programme has recently been compromised by the increase in rhino poaching within the park. This recent threat has not only become a great concern for the park, but for rhino conservationists countrywide.

 

The reserve has a 300-kilometre (190 mi) road network.

 

Some controversy arose in 2014 over plans to build an open-cast coal mine right on the park's border, a plan that a growing coalition of organisations is fighting to stop.

 

(Wikipedia)

 

The vervet monkey (Chlorocebus pygerythrus), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. The five distinct subspecies can be found mostly throughout Southern Africa, as well as some of the eastern countries. Vervets were introduced to Florida, St. Kitts, and Cape Verde. These mostly herbivorous monkeys have black faces and grey body hair color, ranging in body length from about 50 centimetres (20 in) for males to about 40 centimetres (16 in) for females.

 

In addition to behavioral research on natural populations, vervet monkeys serve as a nonhuman primate model for understanding genetic and social behaviors of humans. They have been noted for having human-like characteristics, such as hypertension, anxiety, and social and dependent alcohol use. Vervets live in social groups ranging from 10 to 70 individuals, with males moving to other groups at the time of sexual maturity. The most significant studies done on vervet monkeys involve their communication and alarm calls, specifically in regard to kin and group recognition and particular predator sightings.

 

The vervet monkey very much resembles a gray langur, having a black face with a white fringe of hair, while the overall hair color is mostly grizzled-grey. The species exhibits sexual dimorphism; the males are larger in weight and body length. Adult males weigh between 3.9 and 8.0 kg (8.6 and 17.6 lb), averaging 5.5 kg (12 lb), and have a body length between 420 and 600 mm (17 and 24 in), averaging 490 mm (19 in) from the top of the head to the base of the tail. Adult females weigh between 3.4 and 5.3 kg (7.5 and 11.7 lb) and average 4.1 kg (9.0 lb), and measure between 300 and 495 mm (11.8 and 19.5 in), averaging 426 mm (16.8 in).

 

When males reach sexual maturity, they move to a neighboring group. Often, males will move with a brother or peer, presumably for protection against aggression by males and females of the resident group. Groups that had previously transferred males show significantly less aggression upon the arrival of another male. In almost every case, males migrate to adjacent groups. This obviously increases benefits in regard to distance traveled, but also reduces the amount of genetic variance, increasing the likelihood of inbreeding.

 

Females remain in their groups throughout life. Separate dominance hierarchies are found for each sex. Male hierarchies are determined by age, tenure in the group, fighting abilities, and allies, while female hierarchies are dependent on maternal social status. A large proportion of interactions occur between individuals which are similarly ranked and closely related. Between unrelated individuals, there is female competition for grooming members of high-ranking families, presumably to gain more access to resources. These observations suggest individual recognition is possible and enables discrimination of genetic relatedness and social status. Interactions between different groups are variable, ranging from highly aggressive to friendly. Furthermore, individuals seem to be able to recognize cross-group vocalizations, and identify from and to which monkey each call is intended, even if the call is made by a subadult male which is likely to transfer groups. This suggests the members within a group are actively monitoring the activity of other groups, including the movement of individuals within a group.

 

Vervet monkeys have four confirmed predators: leopards, eagles, pythons, and baboons. The sighting of each predator elicits an acoustically distinct alarm call. As infants vervets learn to make the variety of calls from observation alone, without explicit tutelage. In experimentation with unreliable signalers, individuals became habituated to incorrect calls from a specific individual. Though the response was lessened for a specific predator, if an unreliable individual gives an alarm call for a different predator, group members respond as if the alarm caller is, in fact, reliable. This suggests vervet monkeys are able to recognize and to respond to not only the individual calling, but also to the semantics of what the individual is communicating. It is believed that vervet monkeys have up to 30 different alarm calls. In the wild vervet monkeys have been seen giving a different call when seeing a human being approaching, leading researchers to believe that vervet monkeys may have a way of distinguishing between different land and flight predators.

 

Mothers can recognize their offspring by a scream alone. A juvenile scream will elicit a reaction from all mothers, yet the juvenile's own mother had a shorter latency in looking in the direction of the scream, as well as an increased duration in her look. Further, mothers have been observed to help their offspring in conflict, yet rarely aided other juveniles. Other mothers evidently can determine to which mother the offspring belongs. Individuals have been observed to look towards the mother whose offspring is creating the scream.

 

Siblings likely provide the prevailing social relationships during development. Within social groups, mother-offspring and sibling interactive units are distinct groups. The sibling interaction are heavily supportive and friendly, but do have some competition. Contests primarily involve postweaning resource allocation by the common mother. For example, siblings have conflict over grooming time allocated by their mother. Offspring are usually not born in extremely close proximity due to the interbirth period of the mother. This time can be reduced by use of an allomother. The clarity of the familial and sibships within a group may act as a form of alliance, which would come at relatively low cost in regards to grooming. Other alliances are shown through conflict with aggressive individuals that have acted against a closely related sibling.

 

Allomothering is the process when another individual besides the mother cares for an infant. In groups of vervet monkeys, infants are the source of a tremendous amount of attention. Days after an infant is born, every member of the group will inspect the infant at least once by touching or sniffing. While all group members participate in infant caretaking, juvenile females which cannot yet menstruate are responsible for the majority of allomothering. The benefit is mutual for the mother and allomother. Mothers that use allomothers are able to shorten their interbirth periods, the time between successive births. At the same time, allomothers gain experience in rearing infants, and had more success in raising their own offspring. Juvenile females discriminate in preference for the infant they choose to allomother, and will usually choose siblings or infants of high-ranking individuals. When a mother allows her juvenile daughter to become an allomother for a newborn sibling, the mother decreases her own investment in the infant, while increasing the chances of successful rearing of her immature daughter.

 

Grandmothers and grandchildren share one-quarter of their genes, so they should be more likely to form affiliative relationships than unrelated members in a group. Not only do infants approach their grandmothers more often than unrelated members, but they also prefer their grandmothers compared to other adult female kin, not including their own mothers. Additional research has shown grandmothers show no preference over the sex of their grandchild. Interest in the grandchild spurred from the rank of the grandmother within a group. Higher-ranking grandmothers showed more interest in caring for their grandchildren when compared to low-ranking grandmothers. The presence of grandmothers has been associated with a decrease in mortality of infants.

 

Spiteful actions are extremely rare in the animal kingdom. Often, there is an indirect benefit to the individual acting 'spiteful' or to a close relative of that individual. Vervet monkeys have been observed to destroy a competitor's food source rather than consume or steal it themselves. While energy is being lost on destroying the food, a competitive advantage is given to the individual due to an increase in competitive gain. This would be pertinent for a male which could be displaced within his group to immigrating males.

 

Female vervets do not have external signs indicating a menstruation period, thus there are not elaborate social behaviors involving reproduction. Typically, a female gives birth once a year, between September to February, after a gestation period of about 165 days. Usually only one infant is born at a time, though twins can occur rarely. A normal infant weighs 300–400 g.

 

The vervet monkey eats a primarily herbivorous diet, living mostly on wild fruits, flowers, leaves, seeds, and seed pods. In agricultural areas, vervets become problem animals, as they will raid bean crops, peas, young tobacco plants, vegetables, fruit, and various grain crops. Carnivorous aspects of their diet include grasshoppers and termites. Raids of cattle egrets and weaver bird nests have been observed where the vervets will eat the eggs and chicks.

 

The vervet monkey ranges throughout much of Southern and East Africa, being found from Ethiopia, Somalia and extreme southern South Sudan, to South Africa. It is not found west of the East African Rift or the Luangwa River, where it is replaced by the closely related malbrouck (C. cynosuros). The vervet monkey inhabits savanna, riverine woodland, coastal forest and mountains up to 4000 m (13,100 ft). They are adaptable and able to persist in secondary and/or highly fragmented vegetation, including cultivated areas, and sometimes are found living in both rural and urban environments. Annual home range size has been observed to be as high as 176 ha with an average population density of 54.68 animals/km².

 

In spite of low predator populations in many areas, human development has encroached on wild territories, and this species is killed by electricity pylons, vehicles, dogs, pellet guns, poison, and bullets, and is trapped for traditional medicine, bush meat, and for biomedical research. The vervet monkey has a complex and fragile social system, and persecution of the monkeys is thought to have affected troop structures and diminishing numbers. Many people living in close proximity to vervet monkey colonies see them as pests as they steal their food. There are heavy fines in some cities to discourage the killing of vervet monkeys.

 

Its status according to the IUCN is "least concern".

 

This species was known in ancient Egypt including the Red Sea Mountains and the Nile Valley. From fresco artworks found in Akrotiri on the Mediterranean island of Santorini there is evidence that the vervet monkey was known to the inhabitants of this settlement around 2000 BC; this fact is most noted for evidence of early contact between Egypt and Akrotiri. Excavations dated to the end of the 1st century AD from Berenike, a Roman-Egyptian port-town on the Red Sea coast, demonstrate that vervet monkeys must have been kept as pets at that time.

 

Introduced vervet monkeys are naturalized in Ascension Island and Cape Verde. Dania Beach, Florida, is home to about 20 introduced vervets.

 

(Wikipedia)

 

Der Hluhluwe-iMfolozi-Park (früher Hluhluwe-Umfolozi-Park), 280 km nördlich von Durban gelegen, ist eines der ältesten Wildschutzgebiete Afrikas. Er umfasst 960 km² meist hügeliges Gelände und liegt im zentralen Zululand in der Provinz KwaZulu-Natal in Südafrika.

 

Die vielfältige Vegetation bietet Lebensraum für viele Säugetiere, Vögel, Reptilien und Amphibien. Die „Big Five“, Elefant, Nashorn, Büffel, Löwe und Leopard sind ebenso im Park vertreten wie Geparde, Wildhunde und Giraffen und Nyalas. Hluhluwe und Imfolozi wurden 1895 als getrennte Wildreservate gegründet, als die Population dieser Tiere durch übermäßige Jagd gefährdet war.

 

Anfang der 1960er Jahre war das Breitmaulnashorn (Ceratotherium simium) vom Aussterben bedroht, in Imfolozi existierte das weltweit letzte bekannte Vorkommen in freier Wildbahn. In der Operation Rhino, die vom KwaZulu Nature Conservation Service durchgeführt wurde, fing man Exemplare ein und schickte sie an Reservate und Zoos in der ganzen Welt, so dass sich inzwischen die weltweiten Bestände erholt haben. Heute finden ähnliche Bemühungen mit dem Spitzmaulnashorn (Diceros bicornis) statt. 1999 wurde ein Projekt zur Erhaltung der Löwenbestände gestartet, die an Inzucht litten, so dass die Bestände durch neue Tiere ergänzt wurden.

 

Im Laufe der Zeit wurden den Parks weitere Gebiete zugeordnet, 1964 Schutzzäune errichtet und 1989 die beiden Hauptgebiete mit dem trennenden Korridor zum heutigen Park vereint. Heute verwaltet die Naturschutzbehörde der Provinz KwaZulu-Natal, Ezemvelo KZN Wildlife, das Schutzgebiet, das trotz seiner Größe und bedeutenden Wildbeständen nicht den Status eines Nationalparks Südafrikas besitzt.

 

(Wikipedia)

 

Die Südliche Grünmeerkatze (Chlorocebus pygerythrus) ist eine Primatenart aus der Familie der Meerkatzenverwandten (Cercopithecidae). Sie ist eine der sechs Arten, in die die Grünen Meerkatzen in jüngeren Systematiken unterschieden werden.

 

Südliche Grünmeerkatzen erreichen eine Kopfrumpflänge von 40 bis 60 Zentimeter, der Schwanz wird bis zu 70 Zentimeter lang. Ihr Gewicht beträgt 4 bis 6 Kilogramm, wobei die Männchen deutlich größer und schwerer als die Weibchen werden. Das Fell dieser Tiere ist an der Oberseite graugrün gefärbt, die Unterseite ist heller, die Hände und Füße sind schwarz. Auch das Gesicht ist schwarz, es wird von hellen Haaren an den Backen und an der Stirn eingerahmt. Wie bei allen Grünmeerkatzen haben die Männchen leuchtend gefärbte Genitalien: das Skrotum ist blau und der Penis rot.

 

Südliche Grünmeerkatzen sind im östlichen und südlichen Afrika beheimatet. Ihr Verbreitungsgebiet reicht von Äthiopien und Somalia über Kenia und Tansania bis nach Südafrika. Sie kommen in einer Reihe von Habitaten vor, bevorzugen aber offene Wälder und Savannen. Allzu dichte Wälder meiden sie aber ebenso wie völlig baumlose Gebiete. Auch in der Nähe des Menschen können sie sich aufhalten.

 

Diese Primaten sind semiterrestrisch (das heißt, sie halten sich sowohl am Boden wie auch auf den Bäume auf) und wie alle Altweltaffen tagaktiv. Zur Nachtruhe ziehen sie sich auf Bäume zurück. Sie leben in Gruppen von bis zu 50 Tieren, die sich aus mehreren Männchen, vielen Weibchen und den dazugehörigen Jungtieren zusammensetzen. Beide Geschlechter etablieren eine Rangordnung, die beispielsweise beim Zugang zu Nahrungsquellen und bei der Fortpflanzung zum Tragen kommt. Sie kommunizieren miteinander mit einer Reihe von Lauten, Gesten und Körperhaltungen.

 

Südliche Grünmeerkatzen sind Allesfresser, bevorzugen aber Früchte. Daneben verzehren sie auch Blüten, Blätter, junge Triebe, aber auch Insekten, Würmer und andere Kleintiere.

 

Nach einer rund 165-tägigen Tragzeit bringt das Weibchen ein einzelnes Jungtier zur Welt. Dieses wird im zweiten Lebenshalbjahr entwöhnt und mit 2 bis 3 Jahren geschlechtsreif – wenngleich sich Männchen aufgrund des Gruppenverhaltens selten vor dem fünften Lebensjahr fortpflanzen.

 

Südliche Grünmeerkatzen sind weit verbreitet und können sich besser als die meisten Primatenarten auf die Nähe des Menschen einstellen. Sie kommen teilweise auch in Städten vor und dringen in Plantagen ein. Mancherorts werden sie deswegen als Plage betrachtet und verfolgt, hinzu kommt die Bejagung wegen ihres Fleisches. Insgesamt dürfte die Art nicht gefährdet sein, die IUCN listet sie nicht gesondert.

 

(Wikipedia)

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