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Posted by Paul Hollander on October 25, 2002 at 18:28:01:
In Reply to: Re: Breeding amel black rats ... ??? posted by patricia sherman on October 25, 2002 at 10:39:57:
::Black rat snakes have two independent albino genes. AFAIK, the mutants produce very similar appearances. Mutants like these are called mimics. One mutant is called tyrosinase negative albino, and the other is called tyrosinase positive albino.
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:My 14 E.o.o. babies that hatched on Aug 25 '02, include three albinos. At this point, they look very much like Lacey looked nine months ago when I purchased her. How will I know whether they're T+ or T-, and how do I determine which type Lacey is?
::Tyrosinase negative albino x amelanistic corn produces amelanistic (or albino if you prefer) babies. A couple of years ago a poster here on the kingsnake.com forums had a picture of such a hybrid. Tyrosinase positive albino x amelanistic corn produces normal looking babies.
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:Would hybridizing one of them to an amel corn be the only way that I could tell for sure, then? Will I also have to breed a hybrid clutch from Lacey to determine which type she is, before deciding whether to mate her to Goliath, or to one of the unrelated babies, to have her produce albino babies?
IMHO, you'd be better off mating her to a known T+ or T- black rat. I think the best incubation method for black rat x corn eggs is submerging them in boiling water for at least 10 minutes.
Alternatively, a tyrosinase test could be done.
Unfortunately, I do not know anybody who is selling known T+ or T- black rats. Though there should be some breeders who know what their stock is. And I don't know anybody doing tyrosinase tests, which are probably fairly expensive. 8-(
Paul Hollander, Moderator, Genetics Forum, http://www.reptiletopsites.com
