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New Rhac book and temp sexing!!!

jack7777766 Dec 07, 2003 12:55 PM

I was wondering if any of you who have the new rhac book could tell me what it says on temp sexing for ciliatus, if anything. Does it say any stats, Im getting really tired of seeing females ciliatus so overpriced.

Thanks
Jack
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0.1 Hypo-Tang Leopard Gecko
0.1 Tremper Albino Hypo Tang Leopard Gecko
1.0 Hypo Tang Leopard Gecko
1.0 Crested Geckos
0.0.1 CB Baby Saharan Uromastyx

Replies (12)

LdyPayne Dec 07, 2003 01:09 PM

Though I don't have the book, from what I have read before, sex isn't determined by incubation temperature.

azteclizard Dec 07, 2003 01:18 PM

The book says that with the exeption of R.chouhua, they do seem to show temp determined sex. The goes into detail about the different species, but generally lower temps. will produce more female, and higher temps more males.
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Bill DiFabio
Azteclizard.com
Email Me

paulmorlock Dec 08, 2003 01:39 AM

Im not sure of the book in question,but the new book by DeVosjoli,Fast and Repashy states"in spite of breder's best efforts they have not been able to significantly skew the near 50-50 sex ratio of this species by manipulating temp"

azteclizard Dec 08, 2003 06:39 AM

In the same book it says " With the exception of R.chahoua, Rhacodactylus appear to have TSD...". The same section goes on to mention how Fast has reported high female ratios with ciliatus at lower temp ranges. Pages 52-53 talk about TDS in the different species.
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Bill DiFabio
Azteclizard.com
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jack7777766 Dec 08, 2003 05:57 PM

Bill,

What incubation temps does the book recommend for getting female cillies, what succes rate does it have??

Thanks
Jack
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0.1 Hypo-Tang Leopard Gecko
0.1 Tremper Albino Hypo Tang Leopard Gecko
1.0 Hypo Tang Leopard Gecko
1.0 Crested Geckos
0.0.1 CB Baby Saharan Uromastyx

azteclizard Dec 08, 2003 06:22 PM

it says at a low end range of 68-74 deg. F, Fast claims to get 2-1 to 3-1 female to male ratios.
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Bill DiFabio
Azteclizard.com
Email Me

endo Dec 09, 2003 11:04 AM

I've been using a low end technique for the past year and so far all I've produced is fems. I'm only breeding a single pair so its not really a decent baseline, but I've sold every juvie as a probable female and have yet to hear that any have ended up males.

E
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That's it, screw you guys!
I'm goin' home

-Eric Cartman

azteclizard Dec 09, 2003 03:19 PM

Cool, thanks for the info. I incubated all my eggs so far at fluctuating room temp. I think next season I will do it in a more controlled manner and see how the results come out.
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Bill DiFabio
Azteclizard.com
Email Me

paulmorlock Dec 09, 2003 11:24 PM

Thanks for pointing that out... somehow I missed it, I was quoting page 19 under sexing cresteds. Apparently that info was gathered later.

jack7777766 Dec 10, 2003 12:47 AM

Thanks guys for all the info just what I wanted to know,

Now maybe we can soon put an end to crazy female crestie prices

Jack
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0.1 Hypo-Tang Leopard Gecko
0.1 Tremper Albino Hypo Tang Leopard Gecko
1.0 Hypo Tang Leopard Gecko
1.0 Crested Geckos
0.0.1 CB Baby Saharan Uromastyx

snmreptiles Dec 10, 2003 12:54 AM

On page 101 it states...

"Like Klusmeyer (1999) we do not share the opinion published by De Vosjoli, and Fast (1999): they suggest that temperature-dependent sex determination does not occur in R. Ciliatus. We have observed that females almost exclusively prevail at temperatures between 299K and 300K (78.8 - 80.6F)- a phenomenon contrary to that occuring in R. Auriculatus (where females prevail at higher temperatures). This discovery coincides with Hoss' observation published in Klusmeyer (1999): he also obtained almost only females at 299-300K. When he incubated the eggs at room temperatures, however, all the hatchlings proved out to be males."

This is taken from the book "Rhacodactylus" Biology, Natural History, and Husbandry
By Robert Seipp, and Friedrich Wilhelm Henkel

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MIKE
4.14 Leopards (SHTCT, and Jungle Albino Trempers)
2.13 Fat Tails (Amels, Hets, and Normals)
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jack7777766 Dec 10, 2003 11:53 AM

Nice info!
Thanks for the input. Lets start making some females!!!

Jack
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0.1 Hypo-Tang Leopard Gecko
0.1 Tremper Albino Hypo Tang Leopard Gecko
1.0 Hypo Tang Leopard Gecko
1.0 Crested Geckos
0.0.1 CB Baby Saharan Uromastyx

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