Sunday, January 26, 2014

Black Beauties: Amazing Melanistic Animals

10 Incredible Melanistic (All Black) Animals


http://twistedsifter.com/2012/02/10-incredible-melanistc-all-black-animals/
Photograph by Cburnett on Wikipedia


Melanism is an undue development of dark-colored pigment in the skin or its appendages and is the opposite of albinism. The word ‘melanism’ is deduced from a Greek word that means black pigment. Pseudo-melanism, also called abundism, is another variant of pigmentation, characterized by dark spots or enlarged stripes, which cover a large part of the body of the animal making it appear melanistic.
Melanism related to the process of adaptation is called adaptive. Most commonly, dark individuals become fitter to survive and reproduce in their environment as they are better camouflaged. This makes some species less conspicuous to predators, while others such as black panthers use it as a foraging advantage during night hunting. Typically adaptive melanism is heritable: A dominant gene, which is entirely or nearly entirely expressed in the phenotype is responsible for the excessive amount of melanin. Adaptive melanism has been shown to occur in a variety of animals, including mammals such as squirrels, many felines and canids, and coral snakes. [Source: Wikipedia]
Below you will find a fascinating gallery of ten melanistic (all black) animals. If you know of other melanistic animals, please post in the comments below!


1. Melanistic Big Cats aka Black Panthers


Photograph via bencowtastic on Imgur
A black panther is typically a melanistic color variant of any of several species of larger cat. Wild black panthers in Latin America are black jaguars (Panthera onca), in Asia and Africa they are black leopards (Panthera pardus), and in North America they may be black jaguars or possibly black cougars (Puma concolor – although this has not been proven to have a black variant), or smaller cats. [Source: Wikipedia]



2. Melanistic (all black) Ratsnake





3. Melanistic (Black) Fawn





4. Melanistic (Black) Wolf


Photograph via bencowtastic on Imgur



5. Melanistic (Black) King Penguin





6. Melanistic (Black) Zebra


Photograph via bencowtastic on Imgur



7. Melanistic (Black) Red Fox


Silver Fox



8. Melanistic (Black) Eastern Blue Tongue Lizards





9. Melanistic (Black) Seal


Photograph via bencowtastic on Imgur



10. Melanistic Eastern Grey Squirrel (Black Squirrel)


Photograph by JaGa on Wikipedia


Black Beauties: 10 Amazing Melanistic Animals


No, they’re not pigments of your imagination, these dark creatures (the opposites of albinos) display melanism meaning they’re much blacker than normal. While Black Panthers (actually leopards) are the most well-known melanistic animals, a host of others have also been known to change their spots… into one BIG spot.

Melanistic Guinea Pigs

(images via: Animal Photos!Cheezburger.com and iChat)
Melanistic guinea pigs are rare in the wild though breeders have tried to force the issue in response to demand from pet owners. With their thick, glossy black coats and matching black-coffee eyes, this famously cute pet takes on an aura of dignity and solemnity – at least, in the eyes of human beholders.
(image via: Wikipedia)
Curanderos (in Spanish, “healers”) in South America’s Andean region have been known to employ melanistic guinea pigs in some of their rituals. No word on how effective these rituals may be for the human patients; the guinea pigs do NOT derive any benefits to put it lightly.

Melanistic Deer

(images via: Natural09Donsutherland1 and Buck Manager)
Black deer? In my woodlands? It’s actually LESS likely than you think. According to Dr. John Baccus, director of the wildlife ecology program at Texas State University, “Even though we have more melanistic deer here than in the whole world, they’re still extremely rare. It’s the rarest of the white-tailed deer, even rarer than the big-antlered deer. I get the harvest records every year from the Texas Parks and Wildlife Department, and generally, there are fewer than five of these melanistic deer that are harvested in any given year.”
(image via: The Jungle Store)
The spectacular shot of a melanistic fawn was taken in the Northwest Hills of Austin, Texas, by renowned photographer R.M.Buquoi. Though rare anywhere, the area around Austin is a hot spot of sorts for melanistic White-tail deer… and their tails do seem to retain their characteristic white undersides.

Melanistic Penguins

(images via: PeterVermontCarl Safina and ArcticPhoto)
You’d think being permanently garbed in a tight-fitting formal tuxedo was enough for Antarctica’s King Penguins but nooooo… there’s always that 1 in 30,000 who’s gotta take things to extremes.Melanistic King Penguins can be partially or completely black though their white “bibs” darken much more often than the golden yellow ear patches.
Are there any advantages to being an all-black penguin in an all-white world? They might manage to be warmer when the sun shines, for one. Standing out in a crowd could also make reunions between parents and offspring easier, though as we all know from watchingMarch of the Penguins, that doesn’t seem to be a problem for these remarkable birds.

Melanistic Servals

Servals are members of the cat family found in Africa, notable for their very long legs and large ears. Like most felines, servals are prone to melanism but with one difference: the feature is more common in servals living at higher altitudes. It may be that melanism bestows advantages to the mountain-dwelling servals, perhaps relating to heat conservation and camouflage in rockier alpine environments.
(image via: Belle Hollow)
Savannah cats (hybrids of servals and domestic cats) can also exhibit melanism, as illustrated by the happy kitten above. Though melanistic servals and savannahs don’t display the complex patterns of spots and stripes the breeds are known for, their loyal and friendly personalities complement their dark, lustrous coats making them very special cats indeed.

Melanistic Owls

Owls hunt by night on silent wings, so melanistic owls would seem to have a leg up on their pale-faced brethren. Who can say – no studies have been done on the topic – but it really makes no difference to the small, scuttling critters that make up tan owl’s. Black or white, just be merciful and quick.
(image via: PhotosbyKev)
Barn Owls are kinda creepy looking but this melanistic variant possesses a subtle charismatic charm his bleached buddies can’t match. Hear that, Harry Potter? Valdemort’s owl would like a word.

Melanistic Zebras

Melanistic zebras aren’t all-black, though on occasion they come close. Instead, the mutation acts on the width of the black stripes, crowding out the white to varying degrees. Sometimes the effect is startling and unusual, depending on the strength of the melanistic gene and how it acts on certain individuals.
(image via: TrekNature)
Melanism is rare among zebras, probably because so few afflicted individuals live long enough to produce progeny who might carry the trait forward to future generations. Think about it: life’s tough on the African plains, and blending in with the herd is a matter of life and death. Standing out against the background isn’t exactly a strong survival strategy.

Melanistic Rabbits

At the risk of mixing metaphors, we declare melanistic rabbits to be the black sheep of the bunny family. Not that this bothers them much… who has time to be bothered when every hawk in the neighborhood is noting your every movement while drooling up a storm. It’s enough to make a poor rabbit wish he had some green genes to express. Paging Mr. Greenjeans!
You won’t see melanistic bunnies advertising bathroom tissue, toting egg-filled Easter baskets, or taking Elmer Fudd down the garden path and that’s just wrong. Why don’t we have black toilet paper, by the way? We should, dang-nabbit, and when we do, melanistic rabbits will be there for their long-awaited photo opp!

Melanistic Mallards

Darkwing Duck returns! Melanistic mallards both male and female can exhibit melanism though actually encountering specimens in the wild is very unusual. As with any animal subject to predation from carnivores, standing out from one’s fellows is a no-no; you want to fly under the radar, not into it.
(image via: John Atte Kiln)
Melanism affects a creature’s exterior coat of skin, hair, feathers and sometimes the beak (if applicable) and nails so duck-hunters have no need to shy away from eating the meat of melanistic ducks. This avoids situations where one might ask for dark or darker meat.

Melanistic Frogs & Toads

(images via: DaveHuth and Saurian Enterprises)
Though toad tadpoles are usually all-black, adults display a range of dull coloration from ochre red to dull gray. Black toads are out of the ordinary, as are black frogs. These creatures sport camouflaged skin tones and patterns to avoid a wide range of predators; contrast is most definitely NOT their friend.
(image via: Field Herp Forum)
Melanism can affect the level of pigmentation in an animal’s eyes but that level varies from one individual to the next. The melanisticAmerican Toad above retains its typically golden irises, which contrast nicely with its matte black, knobby and warty skin.

Melanistic Jaguars

Jaguars are the Americas’ largest Big Cats and while melanistic specimens are rare, they’re relatively well known to both ancient and modern society. The nature of the melanism is such that the jaguar’s complex and distinctive pattern of rosette markings is subsumed by dark pigmentation, but not completely obscured. The effect is similar to certain silk fabric and is known as “ghost striping”.
(image via: Touristmaker)
Black Jaguars are comparatively easy to propagate in captivity because the gene for melanism is dominant, as opposed to the gene for melanistic leopards (black panthers) which is recessive. AS such, many zoos across the globe feature black jaguars and we can enjoy viewing photographs of them if one isn’t available for up close & personal encounters at your local zoo or animal park.
Not all animals are prey to melanism, as one must have the gene for the condition to begin with. It’s interesting to wonder what theoretical melanistic creatures would look like, however, and the above rendering of a “Black Lion” gives us a clue. If anything, the infusion of dark pigment gives the King of Beasts an even more majestic appearance – not that he really needs one. Cut, fade to black…


10 Most Amazing Melanistic Animals

http://www.oddee.com/item_98232.aspx

Melanistic (all black) animals, the opposite of albinism, do happen in nature. Check out some of the most fascinating examples.


1
Lizards

Lizards
Melanistic Eastern Blue Tongue Skink (Tiliqua scincoides scincoides). (Source)



2
Ground Squirrel

Ground Squirrel
Melanistic Golden Mantled Ground Squirrel; there are still a few of these squirrels in the area from periods when fires had been frequent. Melanism is just an extreme pigment mutation that causes deeply dark-colored animals. (Source)



3
Lion

Lion
In recent weeks, two very stunning black lion photographs have been circulating online. Why they attract such interest is that according to mainstream zoology, black lions simply do not exist. If they did, and were wholly black in colour, they would most probably be melanistic specimens; analogous if not homologous genetically with black panthers (melanistic leopards) and mutant all-black individuals of other felid species. Sadly, for those hoping that these two photos therefore represented some major cryptozoological discovery, the reality, as is true ever more frequently nowadays, is that they are nothing more than Photoshopped images.(Source)



4
Fawn

Fawn
Photographer R.M.Buquoi shot these pictures of a rare black fawn in Austin, Texas.(Source | Photo)



5
Penguin

Penguin
An extremely rare all-black penguin was photographed near Antartica by Andrew Evans of National Geographic. The king penguin doesn't look like his tuxedoed counterparts because of what one scientist described as a “one-in-a-zillion kind of mutation.” (Source)



6
Silver Fox

Silver Fox
The Silver Fox is a melanistic form of red fox. Melanism is an undue development of dark-colored pigment in the skin, and is the opposite of albinism. Silver foxes display a great deal of pelt variation: some are completely black, save for the white tail tip, while others may be bluish-grey. Wild silver foxes do not reproduce exclusively with members of the same coat morph, and can be littermates with the common red variety. (Source)



7
Zebra

Zebra
Two Plains Zebras, one with a rare dark melanistic coloration at Etosha National Park, Namibia. (Source)



8
Seal

Seal
Melanistic seal pup in Shetland UK. Courtesy of Hillswick Wildlife. (Source)



9
Jaguar

Jaguar
Black Panther – a typical melanistic color of any species of big cats. In Latin America, a BlackPanther is just a melanistic jaguar; in Asia and Africa it's a black leopard, and in North America it may be black jaguars or pumas. By the way, it has been proven that black cats have a more balanced nervous system and faster response than other colors of cats. In the photo: Jaguar-melanistic.



10
Tortoise

Tortoise
Red foot melanistic tortoise. (Source)

Tuesday, December 10, 2013

Animal Metallicism: 10 Amazing Golden Creatures


Got the gold bug? Golden animals are both beautiful and rare, much like the precious metal itself. These colorful insects, arachnids, vertebrates – and even one very special lady – are linked by a common bond: the warm, golden glow that gives them the look of exquisite, living treasures.

Golden Beetles


Certain types of beetles can appear so golden it’s hard to believe they haven’t somehow incorporated 24-carat gold into their gleaming shells! They haven’t – if they did, human treasure hunters would have long since driven them to extinction. Among the most golden of these “gold bugs” are the Golden Scarab Beetle and the Golden Tortoise Beetle.

These insects get their golden appearance using some pretty sophisticated science. The Golden Tortoise Beetle can adjust the moisture content between two layers of its wing covers, resulting in varying levels or golden iridescence as seen by the human eye.
The Golden Scarab Beetle (Chrysina resplendens) goes even further: its chitinous cuticle reflects circularly polarized light which is “left-handed”. Sounds complicated; looks brilliant!

Golden Jumping Spiders

Jumping spiders are hunters and ambush predators rather than web-weavers so one would think having a gleaming, metallic exoskeleton would not be in their best interest. Possibly these spiders’ golden appearance is something only human eyes – and not those of its prey – can appreciate.
Jumping spiders are one of the most intelligent spider species and this 1/4-inch long iridescent gold example is one of the most striking in appearance. The rose petal upon which this jewel-like arachnid has set up his or her hunting grounds makes a pleasing contrast with the shimmering iridescent gold of the spider’s exoskeleton.

Golden Monarch Butterfly Chrysalis

Monarch butterflies are known for their bold orange wings bisected with black veins and contrasting white spots. Their caterpillars, often found grazing on Milkweed plants, are striped with black, white and yellow. It’s only in this majestic creature’s intermediate stage that it chooses to flash its gold: the chrysalis. Oh, uhh, the dude in the chrysalis suit? Gold, pure (comedy) gold.
A Monarch butterfly chrysalis is mainly emerald or jade green in color highlighted by bright metallic gold trim – a horizontal line about 1/3 of the way down and raised golden bumps set apart symmetrically on its lower portion. About 24 hours before the butterfly emerges from the chrysalis, the surface will darken and then turn transparent. Through this process and even after the butterfly has emerged, the golden stripe and spots remain.

Golden Fish

To quote the website copy describing this “truly unbelievable” golden fish, “This is an amazing creation of the Creator. Gold Fish, which was found in the sea in Taiwan was put to display in Taiwan’s Natural Museum.” Okie dokie, I have an open mind and I’m sure you do too… but then: “Scientists have found that some of the parts of this beautiful fish are of 24 carat pure gold.”That noise you heard? That was my mind snapping shut.
Seems this particular goldfish, er, gold fish is an animatronic device that may have a creator; just not THE Creator. One can be sure, however, that Koi breeders are actively engaged in producing a truly believable golden ornamental carp. Such a fish might not have 24-carat gold parts but eager buyers would likely pay as if they were.

Golden Poison-Dart Frog

There are several different species of Golden Poison Frogs including Phyllobates terribilis, said to be the world’s most poisonous vertebrate. Just how deadly are the alkaloid toxins exuded by these frogs through their skin? Just milligram of the frog’s Batrachotoxin poison is enough to kill approximately 10,000 mice, or 10 to 20 humans, or two African bull elephants – from 1/1,000th of a gram of poison! Another way of stating its toxicity is roughly 15,000 humans killed per gram. “Look but don’t touch” was never so appropriate.
Golden Poison Frogs are not metallic gold in hue; in fact they can be pale green, various shades of yellow or even bright orange. Where you WILL see metallic gold on frogs (or toads) is in their eyes – the iris’ of many types of common frogs and toads displays a rich, brassy golden tone that contrasts with a midnight black background. Quite beautiful… some might even say, hypnotic.

Gold Tegu Lizard

The Gold Tegu lizard is a large South American lizard that exploits a similar ecologic niche to that of monitor lizards on other continents. The Gold Tegu’s glossy skin and ornate gold over black striping combine to make it visually very appealing.
Gold Tegu lizards are popular pets though their feisty nature and hard-to-tame aggressiveness makes them a real handful. Speaking of which, a Gold Tegu can grow rather large – up to 44″ long from tip of the nose to the end of their tails – and unlike other Tegu species they are mainly carnivorous.

Golden Snakes

Several different species of snakes have been graced with the prefix “golden”, including the Golden Tree Snake and the Golden Cat Snake. Most gold-toned snakes live in desert habitats where their coloration helps them blend in with the sandy ground and dry vegetation of arid climes.
Now here’s one “rattler” that one wouldn’t mind having coiled close by – it’s one way to un-constrict your finances, at least. I’d say the gilded serpent above was both real and available but then… I’d be speaking with a forked tongue.

Golden Marmoset

The Golden Marmoset, or Golden Lion Tamarin (Leontopithecus rosalia), is one of the smallest monkeys and also one of the most endangered. It’s estimated only about 1,000 of these primates survive in forested areas of Brazil’s Atlantic coast while another 490 are currently kept in captivity or on protected reserves. It’s estimated that 98 percent of the Golden Marmoset’s original lush rainforest habitat has been destroyed through logging and/or agriculture.
The thick, golden fur covering the Golden Marmoset makes it appear larger and heaver than it really is. In actual fact, these New World monkeys only grow up to 13.2 inches (335mm) long and can weight up to 25 ounces (about 700 grams) when fully grown.

Golden Weaver Bird

The African Golden Weaver (Ploceus subaureus) can be found in eastern and southern Africa roughly from Kenya down to South Africa. These birds can form flocks of many thousands and their teardrop-shaped nests may hang from leaf-stripped savannah trees by the dozens.
Golden Weaver Birds are not considered to be threatened and indeed, one of their relatives (the Red-billed Quelea) is considered to be the world’s most abundant bird with a population of approximately 1.5 billion. All Weavers are seed-eaters, and flocks sometimes cause African farmers problems when they settle en masse to gorge themselves on mature seed crops.

Golden Bond Girl

Our last (but not least) golden creature is of the species Homo Sapien, commonly known as Shirley Eaton, Bond Girl. Eaton played the role of Jill Masterson in the 1964 James Bond film Goldfinger. Her claim to fame was her on-screen demise, considered by movie pundits to be one of the top ten film deaths. The crucial scene features Eaton sprawled nude on a bed, her body completely covered in gold. Betty White’s cool and all, but Shirley Eaton is one hot Golden Girl! Here’s a video clip of the notorious (for 1964) scene:
The Jill Masterson character supposedly died from “skin suffocation”, a questionable proposition that incidentally was investigated in a memorable episode of the Mythbusters television series. Shirley Eaton was said to suffer no ill effects from her movie makeup though the film’s producers kept a doctor on hand while filming “just in case”. As for Mythbuster’s Adam Savage, his head to toe gold painting also left him none the worse for wear though his pride was somewhat dented.

All that glitters isn’t always gold and what appears to be gold may or may not glitter – then again, animals are animate objects and their golden garb has value much more than that of the metal that has enticed, entranced and blinded humans from time immemorial.

Ardent In Argent: 10 Amazing Silver Animals


From metallic mirrored beetles to stately senior simians, the serene beauty of silver animals reflects their rank as some of nature’s most exquisite creatures. Though gold may be more flashy, silver animals are no second bananas and take a back seat to nobody. Best of all, their ardent argent adornment never tarnishes no matter what the weather.

Silverfish

Silverfish (Lespisma sacchrina) are wingless insects that can grow up to 3/4″ (about 2cm) in length. They’re soft-bodied creatures that move with a sinuous, fish-like motion – the origin of their most common colloquial name. Silverfish appear silvery due to their many ridged overlapping scales that reflect light. The scales are easily dislodged which makes it seem like these common household pests are “dusted” with silver.

Silver Beetle

Glistening metallic beetles living in Costa Rica’s rainforests have tantalized and delighted those who’ve spied them over the centuries. Indeed, these beetles (Chrysina limbata) and their golden relatives (Chrysina aurigans) are the most metallic-looking of any animal. Their secret lies in the chitinous wing covers that cover most of their upper bodies. Up to 70 thin, semi-transparent layers of chitin reflect and amplify light without the need for any actual metal.

Silver Fly

The most familiar metallic-bodied flies are so-called Blow-Flies and Bottle Flies of the family Calliphoridae, the latter often displaying reflective blue or green bodies. Some species of flies emerge from their pupal stage unpigmented, however, and their shiny exoskeletons therefore appear to have a silvery sheen. Macro photographs of these newly emergent flies can remind viewers of futuristic cyborg robots rather than ordinary insects.

Silver Spider

(images via: Arachnoboards and Euan The Potter)
The ominously large silver spider at the top of the composite image above belongs to the genus Cyphonisia and is known colloquially as the Silver Trapdoor Spider – definitely something one doesn’t want to drop in on! The smaller and more silvery spiders above are known as Dewdrop Spiders. These small, jewel-like spiders of the genus Argyrodes don’t construct webs of their own, preferring to lurk in and around the webs of larger garden spiders where their shining bodies remind onlookers of droplets of morning dew.

Silver Fish


One of the wonders of the ocean is a massive school made up of hundreds – even thousands – of sleek, silvery fish. Congregating together as a representation of the theory of “safety in numbers”, schools of fish protect their species as a whole while providing predators with easy pickings at the same time. As for their silver scales, a huge number of fish species adopt this method of distracting camouflage that has the added benefit of making their bodies smoother, allowing for faster movement.

Silver Frog

The amazing silver frogs captured photographically above by James Gunter live in small pools situated within blisteringly hot and dry desert environments. It may be that these frogs have evolved semi-transparent reflective skin in order to deflect the sun’s more damaging visible and ultraviolet rays. Frogs and other amphibians respire partially through their skin and dehydration is always an issue – in the desert, keeping moist would be paramount.

Silver Lizard

Leapin’ lizards! Well, even stationary lizards can be silver, at least certain parts thereof. And in certain parts of Australia, several species of Skinks exhibit at least some degree of silvery scaliness. As is the usual case with “metallic animals”, no actual metal is required to effect a reflective appearance. Rather, these creatures have evolved metallic shininess as a survival strategy we just happen to think looks pretty.

Silver Snake

Snakes and lizards are both reptiles and both feature oft-colorful scales adorning their bodies. Some species of snakes have scales so shiny they appear to be reflective under the right lighting conditions. Such silvery snakes aren’t as exotic as one might think: the relatively common Rat Snakes above gleam with a soft silver glow that belies their humble origins.

Silver Fox

The Silver Fox is a melanistic variation of the more common Red Fox – approximately 8 percent of wild foxes in Canada display glossy, silvery fur that on close inspection is actually made up of dark brown, gray and white hairs. Silver Foxes are the subjects of an ongoing experiment in fox domestication instigated by Russian scientist Dmitry Belyaev in 1959. Belyaev bred Silver Foxes for tameness over many generations and observed the foxes gradually becoming more dog-like in both their behavior and their appearance. One result of the experiment was that the selectively bred Silver Foxes lost their “silver” fur in favor of multicolored coats more commonly seen on domesticated dogs, cats, cows and pigs.

Silverback Gorilla

Going gray… not just for people anymore! It’s not known why aged male gorillas go gray on their backs and hindquarters; it’s also not clear if other gorillas note the distinctive look of such “silverbacks” and adjust their behavior accordingly. Suffice to say that in gorilla society, as it were, being a silverback means you’ve made it to the peak of power and influence. Reaching a state of silveriness is common to both mountain Gorillas and their Lowland cousins. Unlike humans, curiously, only male gorillas go gray in the manner.

Humans may be animals but there’s nothing more exotic than changing one’s appearance with silver or other metallic body paint and makeup. That’s because unlike our animal relatives, humans haven’t evolved body parts that are sufficiently reflective to be considered silvery. Mirror, mirror, on my skin, who’s the fairest, me or my kin?