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Old 03-16-05, 12:54 PM   #1
fedupdon
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Temp and Sex

has Anyone tried to see if temp can produce more male than females or maybe all males or females saw a study but cannot find it now dont rember if it high temp that gives more of one than the other
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Old 03-16-05, 04:47 PM   #2
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What species?
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Old 03-16-05, 07:12 PM   #3
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No kidding. 5,000+ reptile and amphibian species and we're supposed to guess? LOL!
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Old 03-16-05, 07:49 PM   #4
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it was posed as a general question saw a report about croc eggs but idonot rember ifyou get all males or females just that higher temps produced more of one but tohigh a temp killed all eggs thoug th i might try with some king and rat snake to see if i could produce more of one sex.
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Old 03-16-05, 10:58 PM   #5
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"General answer"; Yes temps can determine sex.
"Other general answer": No temps cannot determine sex.
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Old 03-16-05, 11:11 PM   #6
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thanks
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Old 03-17-05, 05:04 PM   #7
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haha, Mykee.

Fedupon, the way it works with crocodiles is that there is a band of temperature (around 81.6C for saltwater crocodiles, I believe) at which the hatchlings will be mostly male. Above or below this temperature you get mostly females. Too far above or below this temperature and your eggs die, of course.

Unfortunately for you, reptiles are a mixed lot of animals that aren't necessarily closely related. Kingsnakes and ratsnakes are squamates, the group that contains both lizards and snakes. Crocodiles, on the other hand, have descended from archosaurs, which means they are more closely related to dinosaurs and birds than to kingsnakes or ratsnakes. Trying to figure out whether or not your ratsnakes or kingsnakes can be incubated to produce one sex by looking at crocodilian incubation temperatures would unfortunately be as accurate as basing your crocodile's diet on what you feed your chickens. They're vaguely related but entirely different animals.

However, some squamates (certain lizards in particular) are known to have temperature influenced sex determination.

So, in answer to your general reptile question of 'does temperature influence sex?' the answer is pretty much as Mykee gave it.

yes
no
dunno
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Old 03-17-05, 06:38 PM   #8
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thanks it was ask by a bunch of kids who saw some snakes that were selling for 10.000 . they thought if they could produce more of the females that the breeder would make more money
i just couldnot exlain how it would or would not work
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