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Cultivar: Anerythristic
Other Marketing Names:
Black Albino, Anerythristic type A, Anery
Genotype: ana·ana
Eyes:
Dark grey to black with black pupils
Ventrals:
Classic checkerboard pattern with Black checks

 

History: There are two 'types' of Anerythristic Cornsnakes, Anerythristic Type A, and Type B (Charcoal) . Anerythristic Type A Cornsnakes occur naturally in an area in South West Florida, commonly refered to as the Immokalee Triangle, this area is roughly between Immokalee, Ft Myers and Moore Haven.

From 1973 through to 1977 Dr H. Bernard Betchel conducted a series of matings involving wild-type female Cornsnakes from Georgia and three wild-caught males from different gene pools in Florida, one was from Immokalee in Hendry County, the second from Moore Haven in Glades County and the third was purchased from a Florida dealer with unknown collection data.
The project started with the mating of an Anerythristic males to a wild-type females, from which the young of these pairing (all pigmented normally) were raised to sexually maturity. In 1975, a pairing from a female F1 and an Anerythristic male produced five wild-type and nine Anerythristic young. A cross between another F1 female and an Anerythristic male produced seven wild-type and four Anerythristic hatchlings. A pairing between F1's produced six wild-type and two Anerythristic hatchlings. The ratios produced were consistent in proving that Anerythrism was inherited by a simple recessive mutation. Further more the project breedings also proved that the three Anerythristic males were allelic, representing the independent recurrence of the same mutation in unrelated gene pools (Immokalee in Hendry County, Moore Haven in Glades County).

Appearance: Anerythrism is defined as the absence of the pigment erythrin, which is mainly the reds and also the yellow pigments. Anerythristics are predominantly grey and black. Their background can range from white to most shades of grey. They have black saddle borders and their saddle colors are usually black to dark grey. As these snakes mature many gain brownish overcast to their color. Yellow still develops around their chin and neck and appears to be from a different source; some of the strongest theorys claim its a nutritionally based color development and not genetically.

Notes: Type A Anerythrism seems to mask the Caramel gene when they are homozygous in the same animal. Rich Z also notes that these double homozygous Corns look very clean with reduced colouration that is often seen in many Anerythristic Motley Corns.

Selectively Bred Anerythristic: Some Anerythristic Corns that show alot of pastel colours are sometimes marketed as Pastel , although this name is usually used with Ghost.

Combinations: Snow, Ghost, Granite, Anerythristic Motley, Anerythristic Stripe, Ghost Bloodred

 Don Sodenberg - South Mountain Reptiles (1,6.)
Lou Reading (2,3.4,5)
This site has information on the following genera of Ratsnakes ... Spilotes, Spalerosophis, Ptyas, Zamenis, Elaphe, Rhinechis, Senticolis, Pseudelaphe, Pantherophis, Bogertophis, Orthriophis, Gonyosoma, Oreocryptophis, Oocatochus, Euprepiophis, Coelognathus, Archelaphe