View allAll Photos Tagged pigmentation
J'attendais que le balbuzard pêcheur qui avait quitté sa perche revienne.
De loin je voyais ce grand oiseau envahir mon viseur et tournoyer très haut dans le ciel. Surprise et primeur...un urubu à tête rouge.
Enfin de nom seulement car il s'agit d'un juvénile dont la tête n'a pas encore pris cette pigmentation caractéristique. D'où la primeur.
While waiting for the return of the osprey, I noticed this large bird coming towards me and circling very high in the sky. A first for me. A Juvenile Turkey Vulture in flight.
I had never seen one young enough where the characteristic pigmentation of the head was still absent.
Summerstown, ON, Canada.
Probably my best photograph of this raptor, and shot with an inexpensive kit lens.
The Leucistic or "white" Red Kite photographed at Gigrin farm, Rhayader. It's unusual colour is caused by a rare genetic mutation which prevents normal pigmentation of the feathers resulting in predominantly white or pale plumage.
Eristalis tenax, the common drone fly, is a common, migratory, cosmopolitan species of hover fly It is the most widely distributed syrphid species in the world, and is known from all regions except the Antarctic. It has been introduced into North America and is widely established. It can be found in gardens and fields in Europe and Australia. It has also been found in the Himalayas..Eristalis tenax is a large, stocky bee mimic. The eyes are marbled in black. Males have hovering displays. The average wing length is 9.75–13 mm and their average wingspan is 15 mm.
The exact appearance of the drone fly can vary considerably.The abdomen can vary in color from dark brown to orange. Pigmentation has an important role in the control of body temperature; the black areas down the center of the drone-flies abdomen may absorb solar radiation and so warm the dorsal blood vessel, which is right underneath
Neotinea tridentata -hypochromatic form (Orchidaceae) 141 25
Neotinea tridentata - hypochromatic form - is a rare color variant of the three-toothed orchid, characterized by pale pink to white flowers due to reduced pigmentation.
While the typical species has bright pink or purplish tones, the hypochromatic form lacks the usual anthocyanin coloration but retains the same morphological structure.
It usually grows in calcareous grasslands and open woodlands, especially in southern and central Europe, flowering from April to June.
The lunatic is in my head.
The lunatic is in my head
You raise the blade, you make the change
You re-arrange me 'til I'm sane.
You lock the door
And throw away the key
There's someone in my head but it's not me.
Roger Waters
In dragonflies, there are two main types of colors: natural pigmentation and structural colors. Most dragonflies have a little bit of both on their bodies. Natural Pigmentation
Natural pigmentation refers to colors that are always the same, no matter how you look at them. They usually consist of colors like brown, red, black, or yellow.
Rhyothemis Variegata, Common Picture Wing or Variegated Flutterer, is black and yellow female dragonfly on twig.
This leucistic trumpeter swan first showed up more than a month ago and I've come across him again. This pigmentation problem resulted in a very colourful bill.
TTP
Taken at Sandy Camp Road Wetlands Reserve, Lytton, Old.
Widespread across much of Australia. It has a predominantly white plumage with a bare, black head, long downcurved bill, and black legs.
Inner secondary plumes are displayed as lacy black "tail" feathers. The upper tail becomes yellow when the bird is breeding. During the breeding season the small patch of skin on the under-surface of the wing changes from dull pink to dark scarlet as do patches of the skin pigmentation on the back of their head.
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Taken while walking round Thruscross Reservoir. North Yorkshire
Zoom in for better view
Anthocharis cardamines, the orange tip, is a butterfly in the family Pieridae, which contains 1100 species of butterfly. A. cardamines is mainly found throughout Europe and temperate Asia The males feature wings with a signature orange pigmentation, which is the origin of A. cardamines' common name. Wikipedia
The leucitic,or "white" Red Kite photographed at Gigrin farm, Rhayader. It's unusual colour is caused by a rare genetic mutation which prevents normal pigmentation of the feathers resulting in predominantly white or pale plumage.
Leuzismus (von altgr. λευκός leukós „weiß“) ist eine Defekt-Mutation bei Tieren, die dazu führt, dass das Fell weiß und die darunterliegende Haut rosa sind, da die Haut keine Melanozyten (farbstoffbildende Zellen) enthält. Im Gegensatz dazu sind beim Albinismus die Zellen zwar vorhanden, aber unfähig, den Farbstoff Melanin zu bilden. Die meisten Formen der Scheckung sind auf abgeschwächte Formen des Leuzismus zurückzuführen.
de.wikipedia.org/wiki/Leuzismus
Leucism is a wide variety of conditions which result in the partial loss of pigmentation in an animal—which causes white, pale, or patchy coloration of the skin, hair, feathers, scales or cuticles, but not the eyes. It is occasionally spelled leukism.
'Leucism' is often used to describe the phenotype that results from defects in pigment cell differentiation and/or migration from the neural crest to skin, hair, or feathers during development. This results in either the entire surface (if all pigment cells fail to develop) or patches of body surface (if only a subset are defective) having a lack of cells that can make pigment.
Since all pigment cell-types differentiate from the same multipotent precursor cell-type, leucism can cause the reduction in all types of pigment. This is in contrast to albinism, for which leucism is often mistaken. Albinism results in the reduction of melanin production only, though the melanocyte (or melanophore) is still present. Thus in species that have other pigment cell-types, for example xanthophores, albinos are not entirely white, but instead display a pale yellow colour.
More common than a complete absence of pigment cells is localized or incomplete hypopigmentation, resulting in irregular patches of white on an animal that otherwise has normal colouring and patterning. This partial leucism is known as a "pied" or "piebald" effect; and the ratio of white to normal-coloured skin can vary considerably not only between generations, but between different offspring from the same parents, and even between members of the same litter.
A Canada Goose with a touch of Leucism. It was just on top of it's head. Leucism is the partial loss of all types of pigmentation, including carotenoids. The term then would be that it's Leucistic. Central Bucks PA.
The dominant gene that controls anthocyanin pigmentation of organs in the apple tree comes from Malus niedzwetzkyana, the Niedzwetzky apple tree.
The apple tree is named after the botanist Nedzvetsky. Lawyer, public figure, local historian, secretary of the Semirechye regional statistical committee. He collected the fruits of this apple tree in the vicinity of Kashgar, in the foothills of the Tien Shan, and sent them to Dr. Georg Dik, who described the plant.
Домінантний ген, що контролює антоціанову пігментацію органів у яблуні, походить від Malus niedzwetzkyana – яблуні Недзвецкієвої.
Яблуню, яка стала материнською для Malus Purpurea Group, названо на честь ботаніка Недзвецького. Юрист, громадський діяч, краєзнавець, секретар Семиріченського обласного статистичного комітету. Зібрав плоди цієї яблуні на околицях Кашгарі, в передгір'ях Тянь-Шаня, і переслав їх доктору Георгу Діку, який описав рослину.
Місце: сквер Василя Стуса, сторона проспекту Палладіна.
(not the best photos, but the best I could get at the time)
I noticed some almost fluorescent white stripes on one of the birds flitting around in the lilac branches and ran for the camera.
Once I saw it through the lens I realized it was a sparrow... but, I've never seen it around previously and now...not since that day although I do watch for it.
I can't believe how white the feathers were. Like I said... almost fluorescent in that they were so bright white. It is a little female... and, she seems not bothered at all by them...and, other than a few perfectly matched feathers, it was all the "leucism" she sported. The others didn't seem to treat her any differently... she was just there hanging out with everybody. Pecking at nuts and seeds in the feeders and jumping in and out of the lilac branches. And, then, she was gone ....
When I see the same size group of sparrows each day I more or less assume they are the same darn group. But, obviously she came from somewhere else... or with a different group..or maybe she is even flitting about by herself. Who knows with birds... as usual.....
Here is some info on leucisim.
Leucistic sparrows are far more prevalent than the Albinos. Spotting a sparrow with a few white parts, you might consider it to be a Partial Albino. However, the correct term for such a species is Leucine.
Whereas Albinos lack all the color pigmentation, resulting in entirely white feathers and white plumage, Leucinos are affected by a partial loss of pigmentation. This deficiency of pigmentation usually occurs in the feathers, while the soft parts remain intact.
In contrast to the Albino Sparrows, Leucistic sparrows appear to live somewhat everyday life, like their other mates. Even if not in massive amounts, the presence of melanin in their bodies aids the bird in better eyesight and stronger feathers than an absolute Albino.
Interestingly, there is often a variation in the intensity of leucism on the bird’s body, exhibiting alterations in its white feathers. With every new cycle of molding, the spread of white feathers may increase or decrease.
The photo beside this one shows her from the back and you can see the perfect symmetry of the few white feathers...which seems unusual. Often, it seems, the lack of pigment causes blotchy coloration in the photos I have seen of them.
A blue rose is a flower of the genus Rosa (family Rosaceae) that presents blue-to-violet pigmentation instead of the more common red, white, or yellow. Blue roses are often portrayed in literature and art as a symbol of love and prosperity, but which as a result of genetic limitations does not exist in nature.
Gannets with black iris in the eye are those that have recovered from avian flu. This one seems to have lost its blue pigmentation but doesn't look as completely black as others do.
Eristalis tenax, the common drone fly, is a common, migratory, cosmopolitan species of hover fly. It is the most widely distributed syrphid species in the world, and is known from all regions except the Antarctic...Eristalis tenax is a large, stocky bee mimic. The eyes are marbled in black. Males have hovering displays. The average wing length is 9.75–13 mm and their average wingspan is 15 mm.
The exact appearance of the drone fly can vary considerably. The abdomen can vary in color from dark brown to orange. Pigmentation has an important role in the control of body temperature; the black areas down the center of the drone-flies abdomen may absorb solar radiation and so warm the dorsal blood vessel, which is right underneath
Chinchilín, Greater Antillean Grackle (Quiscalus niger) (Rc)
* individuo con leucismo:
Leucism is a condition in which there is partial loss of pigmentation in an animal resulting in white, pale, or patchy ...
El zanate antillano (Quiscalus niger), también denominado chango, chichinguaco, chinchilín, hachuela y mozambique,2es un especie de ave paseriforme de la familia Icteridae que puebla los campos y jardines de las Antillas Mayores y las islas Caimán. Es un ave de plumaje negro intenso y de ojos amarillos que llega a crecer unas 10 pulgadas aproximadamente. Tienen la cola en forma de "V" y su pico es recto y puntiagudo. Vuelan en bandadas numerosas y anidan comúnmente en las subestaciones eléctricas. Se alimentan de insectos en el suelo, aunque en las poblaciones come casi cualquier cosa.
DESCRIPCION: Es un ave de plumaje negro intenso y de ojos amarillos que llega a crecer unas 10 pulgadas aproximadamente. Tienen la cola en forma de "V" y su pico es recto y puntiagudo. Vuelan en bandadas numerosas y anidan comúnmente en las subestaciones eléctricas. Se alimentan de insectos en el suelo, aunque en las poblaciones come casi cualquier cosa. Al atardecer mientras se acomodan a dormir, producen gran algarabía y ruidos bien agudos. Las hembras usualmente son de menor tamaño y menos brillantes que los machos. Ponen de 3 a 4 huevos color verdoso oscuro muy variables, con manchas rojizas y negruzcas. Tamaño aproximado de los huevos, 28 × 20 milímetros. Los juveniles son parecidos a los adultos, con la característica de que sus colas son más cortas. Es común en áreas urbanas y en fincas de los llanos costeros. No acostumbran merodear los bosques densos.
Hace sus nidos con materiales vegetales, regularmente barba de viejo o guajaca. se le ha visto anidar en la parte superior de los nidos de Cigua palmera, donde aveces se ven enfrentamientos entre ambas especies. pone 2-4 huevos de color azul pálido con puntos azules mas oscuros y negruzcos, con algunos puntos definidos y otros formando grandes manchas que aveces resultan en lineas irregulares. se reproduce entre febrero y septiembre pero especialmente entre abril y agosto .
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The Greater Antillean grackle (Quiscalus niger) is a grackle found throughout the Greater Antilles and the Cayman Islands as well as smaller, nearby islands. Like all Quiscalus grackles, it is a rather large, gregarious bird. It lives largely in heavily settled areas.
The 27 cm (11 in) long male is glossy black with a large rudder-like tail; the 24 cm (9.4 in) long female has a smaller tail and is similar in colour but less glossy than the male. The eye is yellow and is the only non-black body part.
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Lugar de Captura / Taken:Cayo Iguana (Iguana Cay,Oviedo's lake), Laguna de Oviedo, Oviedo, Pedernales.
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Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Passeriformes
Family:Icteridae
Genus:Quiscalus
Species:Q. niger
Binomial name
Quiscalus niger
FILE: Chinchilin-1807
This Leucistic Great Horned Owl was amongst the branches so I couldn’t avoid the shadows, but I’m pleased I got to see him. Leucism is the partial loss of pigmentation causing white feathers but not in the eyes.
Le huard blanc est leucistique, semblable à un animal atteint d'albinisme, mais moins extrême. L'albinisme empêche un animal de produire de la mélanine tandis que le leucisme est une « perte partielle de tous les types de pigmentation », le faisant apparaître blanc ou plus clair ou tacheté par endroits, comme l'explique le National Park Service .
Pour protéger l'oiseau et son habitat, Whitty garde le secret sur sa localisation, même s'il plaisante en disant que même si les gens savaient où il se trouve, ils ne seraient probablement pas en mesure de le trouver. Comme le savent trop bien les photographes animaliers, lorsqu'on est déterminé à photographier quelque chose de très spécifique, on a l'impression de ne jamais le voir.
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The white loon is leucistic, similar to an animal with albinism, but less extreme. Albinism prevents an animal from producing melanin while leucism is a “partial loss of all types of pigmentation,” making it appear white or lighter in color or splotchy in parts, as the National Park Service explains.
To help protect the bird and its habitat, Whitty is keeping its location under wraps, although he jokes that even if people knew where it was, they probably wouldn’t be able to find it. As wildlife photographers know all too well, when you’re determined to photograph something very specific, it feels like you’ll never see it.
Crédit : Chris Whitty
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The harsh truth is, most red-haired men look like blondes who've spoiled from lack of refrigeration. They look like brown-haired men who've been composted out behind the barn. Yet that same pigmentation that on a man can resemble leaf mold or junkyard rust, a woman wears like a tiara of rubies
I know this as Pushki and it's what is left over after it flowers and has gone to seed. There are still a couple of seeds on it still. This is a very common plant in Alaska and it's name is Heracleum maximum, also commonly known as cow parsnip. This is a plant to avoid since the sap of this plant on your skin is photosensitive and will create skin blistering on a sunny day. The resultant scars and pigmentation can last months or years.
Taken 7 July 2022 at Homer, Alaska.
The humpback whale (Megaptera novaeangliae) is a species of baleen whale. It is a rorqual (a member of the family Balaenopteridae) and is the only species in the genus Megaptera.
The adult humpback whale is generally 14–15 m (46–49 ft), though longer lengths of 16–17 m (52–56 ft) have been recorded. Females are usually 1–1.5 m (3 ft 3 in – 4 ft 11 in) longer than males.
The species can reach body masses of 40 metric tons (44 short tons). Calves are born at around 4.3 m (14 ft) long with a weight of 680 kg (1,500 lb).
The body is bulky with a thin rostrum and proportionally long flippers, each around one-third of its body length.[15][16] It has a short dorsal fin that varies from nearly non-existent to somewhat long and curved.
As a rorqual, the humpback has grooves between the tip of the lower jaw and the navel. They are relatively few in number in this species, ranging from 14–35. The mouth is lined with baleen plates, which number 270-400 for both sides.
Unique among large whales, humpbacks have bumps or tubercles on the head and front edge of the flippers; the tail fluke has a jagged trailing edge.
The tubercles on the head are 5–10 cm (2.0–3.9 in) thick at the base and poke up to 6.5 cm (2.6 in). They are mostly hollow in the center, often containing at least one fragile hair that erupts 1–3 cm (0.39–1.18 in) from the skin and is 0.1 mm (0.0039 in) thick. The tubercles develop early in the womb and may have a sensory function as they are rich in nerves.
The dorsal or upper-side of the animal is generally black; the ventral or underside has various levels of black and white coloration. Whales in the southern hemisphere tend to have more white pigmentation. The flippers can vary from all-white to white only on the undersurface.
The varying color patterns and scars on the tail flukes distinguish individual animals. The end of the genital slit of the female is marked by a round feature, known as the hemispherical lobe, which visually distinguishes males and females.
This image was taken from the beakwater at Honningsvag Harbour in Norway
Numbers of these "novel" Katiannids (I never know what to call them!) appearing in our Staffordshire garden at the moment. Quite a proportion are "pale" individuals with reduced numbers of pigment spots. This one has a concentration of spots towards the rear of the large abdomen. Haven't seen this before.
Could the levels of pigmentation be related to when they last moulted?
Salares Boliviani : Laguna Colorada
La Laguna Colorada (Laguna Rossa) è un lago salato poco profondo nel SudOvest dell'Altipiano boliviano all'interno della Riserva Nazionale di Fauna Andina "Eduardo Avaroa" e vicino al confine con il Cile
La presenza, all'interno del lago, di isole di borace dal colore candido crea un forte contrasto con il rosso/arancio (a seconda delle ore del giorno) delle acque dovuto a sedimenti rossi e alla pigmentazione di alcune alghe che attirano qui una numerosa colonia di fenicotteri andini.
Laguna Colorada (Red Lagoon) is a shallow salt lake in the southwest of the altiplano of Bolivia, within Eduardo Avaroa Andean Fauna National Reserve and close to the border with Chile. The lake contains borax islands, whose white color contrasts with the reddish color of its waters, which is caused by red sediments and pigmentation of some algae. James's Flamingos abound in the area.
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In this one you can see a part of that special stretchy tissue called ventral groove blubber attached to their lower jaw or mandible of the Humpback Whale that I've been telling you about. When they lower their jaws to extreme angles and swim very quickly while feeding on small fish and krill, a drag force on this blubber causes it to expand to encompass a volume that can be almost as big as the whale itself.
But that's not what makes this photo so special to me. Perhaps you thought I altered the photo in some way ... selective colouring as you've no doubt seen in some photos. Well, I don't even know how to do that ... and, furthermore, I wouldn't do it anyway even if I did know how. No. What you're seeing here is what I saw ... what the camera saw. No embellishments whatsoever!
I've seen quite a few Humpbacks over the years ... but nothing like this! At first I thought it might have been some organic growth in the grooves of the lower jaw ... akin to barnacles. But on closer inspection it seems too regular for that. Then I thought it might be as a result of it being stretched so much ... blood showing through? Don't think so, though. So, maybe some pigmentation aberration?
Whatever it is, it makes for a very interesting photo. You have to check out the larger version. Also, I have a number of shots of this whale. Not just this one. In one of them, this ventral groove blubber is stretched even bigger!
By the way, there are four whales visible in the photograph.
Enjoy!
Ochre and Purple Sea Stars (both Pisaster ochraceus, just different pigmentation) cling to a rock face at low tide on Canada's west coast. I made this shot just before the wasting syndrome that decimated sea stars all along the coast; thankfully, there are signs that they're making a recovery. I hope to receive a report soon from friends who are camping there - just up the hill from where this photo was taken - this week.
I don't know why I decided to place the sea stars off-centre in this frame; I think it just felt right. The pano crop was an afterthought. Tripod, late afternoon light, Pacific Ocean to my back at low tide but my head was on a swivel. That tide comes in pretty fast when it turns.
Photographed at Long Beach in Pacific Rim National Park, Vancouver Island, BC (Canada). Don't use this image on websites, blogs, or other media without explicit permission ©2013 James R. Page - all rights reserved.