Zebras with a Difference.
92Zebras always have black and white stripes, right? Not so, as the following examples show. Not only is every zebra different in the exact pattern and width of their stripes, but zebras also come in black, blonde and brown!
Melanism
A color morph with more black pigment is called 'melanistic'. This is a recessive trait and so remains rare in any large population.
Coloration varies from wide stripes to nearly complete black coverage.
It is not clear that all black colored zebras are due to melamism but it is the most likely explanation.
Examples (wild): Namibia (????), Namibia (????), Namibia (2009), Namibia (2011), South Africa (2007), South Africe (2010).
Mottled Zebras
Some zebras show unusual or distorted stripes and blotches. These variation are particularly rare and the location and time of the photographs available is not clear--nor is the genetic basis for the disruption of the normal stripe pattern.
Spots
in some cases melanism combined with the stripes of the zebra results in a spotted coat pattern (white on black) such as with the foal shown right and the adult zebra photographed in the sixties in Zambia (see link below). In other cases the stripes just seem to break up into spots (black on white).
Examples (wild): Zambia (1968)--White on black, whole body,Kenya (2005), Kenya (2009)--Black on white, torso, Nairobi (2009),Botswana (2010), Kenya (????)--White on black patch on back.
Blonde
At the other end of the pigment scale is albinism and leucism where zebras lack black pigment and so have pale or missing stripes. They are also referred to (for obvious reasons) as 'blonde zebras' or 'white phase zebras'.
A small herd of blonde zebras live at the Mount Kenya Wildlife Conservancy where a number of blonde zebras were released together allowing the recessive coloring to persist in future generations of the group (rather than being breed out by zebras with the genetically dominant normal striping).
When the effect of the leucism is less extreme the zebra displays brown or reddish-brown stripes (Tanzania, 19??).
Or black stripes may be present on the body but missing on the legs or legs and under-belly.
Examples (captive): Germany (????), Kenya (2007), Tanzania (2009)
Examples (wild): Kenya (2004)
Brown
Zebroids, or zebra horse hybrids have the shape of a horse but combine horse colors with zebra stripes.
The example shown is brown but any color including piebald is possible.
Hybrds of zebras with other equids (donkey etc) are also called zebroids also they also go by more specific names such a zedonk and zorse.
Like many hybrids zebroids are sterile.
Examples (captive):
Another animal that looks a lot like a brown zebra is the now-extinct sub-species of the plains zebra called the quagga.
The quagga had a striped head neck and forequarters, brown body and white legs.
There is a project to recreate the quagga by selective breeding of plains zebras to resurrect its distinctive coloration.
See also:
And this guy?
This picture from Tanzania (2007) seems to show an unusual zebra with narrow stripes, a mainly while body and black mane. You can see it next to a zebra with normal markings here.
Links:
- Zorse, Hebra, Zony, and Zonkey Pictures
http://www.allhorsebreeds.info/A zorse is a cross between a zebra stallion and a horse mare. The zorse takes the color or dominant color gene of the mare and the zebra sire gives it stripes. - Mutant Zebras
- Madam Zebra - Zebra Mutations
Zebras with some unusual quirks in their stripey pattern.
References:
CommentsLoading...
Those are really neat pictures!
Those zebras are amazing...and beautiful too.
Wow, that foal is amazing! Whoda thunk, huh? Neat pictures.
Has there been much study done on the genetics of the "albino" or leucistic zebras? Is this similar to dilution genes seen in other equids?











jdavis88 Level 1 Commenter 17 months ago
Wow, cool pics! Never have seen zebras like that! Nice hub!