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Southwestern Center for Herpetological Research

FINALLY! After 20 years, a Green Rat!

gmerker Oct 10, 2007 08:37 PM

After 20 years, we finally bred the Western Green Rat Snake (Senticolis triaspis intermdia) again. We actually consistently bred this species from 1984 through 1987; in fact, we were the second group to ever breed this species in captivity. They were first successfully bred by a group in Phoenix in 1983. We acquired a huge adult female from a close friend on breeding loan and bred her for three years. A second female was bred in 1987. Then in the 1990’s, I didn’t really have a lot of these animals, and the breeding stopped.

We raised several babies up to breeding size and today, after 20 years, we got our only fertile egg to hatch. The egg was laid in early July.

The snake pipped yesterday, after 99 days. The temperature the egg was incubated at ranged from the low 70’s °F to the low ‘80’s °F.

The egg was approximately 19 grams at the time of laying; right before hatching the egg weighed 25.3 grams. The baby, a female, weighed in at 17.1 grams. I am hoping to bred these again next year……

Replies (6)

dustyrhoads Oct 10, 2007 09:34 PM

Nice looking animal. Santa Rita?

DR
Suboc.com

antelope Oct 11, 2007 12:46 AM

She's a beauty! Thanks for that breath of fresh air and congrats!
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Todd Hughes

Shaky Oct 11, 2007 10:41 AM

Gorgeous big healthy baby.
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V.P.
Austin Herp. Soc.

Mark Banczak Oct 11, 2007 08:07 PM

Congrats! Gorgeous little snake. I've only been in AZ for 3 years but i quickly got fascinated by these guys. Aren't those eggs shockingly large?

gmerker Oct 12, 2007 09:38 PM

Thanks for the comments guys....to answer your questions - this animal is actually not locality-matched. The parents originated from Chiricahua stock (male) and Santa Rita stock (female). I only have one pair and the male I am raising form the Santa Ritas was too small to breed. Unfortunate, but true...thanks again for the comments, gmerker

ratsnakehaven Oct 14, 2007 11:53 AM

Gerry, congrats!

Those incubation temps were fairly low. Do you think these eggs do better at lower temps, when you compare all the clutches you've had? I always thought this species was somewhat easy to incubate (never done it myself).

Good luck with this baby and keep us posted. Also, wish ya luck for next year in breeding these guys. I know lots of breeders are trying, but you don't hear much about breeding successes.

Regards...Terry
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Ratsnake Haven...researching ratsnakes since 1988

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