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I have seen that alot of the gecko hybrids are only males(crested X chahoua), but in alot of the hybrid snakes...i see both sexes...so does anyone know why crested X chahoua's are all male...thanks..lp

>>I have seen that alot of the gecko hybrids are only males(crested X chahoua), but in alot of the hybrid snakes...i see both sexes...so does anyone know why crested X chahoua's are all male...thanks..lp

Maybe the it has to do with the temp the eggs are incubated at.
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www.mesozoicreptiles.com

temp sex with crested dont work......from everything i have read........most likey the same with chahouas too......i was thinking the same thing....

While it's true that crested/chahoua hybrids are all males and most snake hybrids produce males and females, it seems the ratio is skewed toward males in some snake crosses. I tried asking about this a while back and didn't get a lot of input, but everyone I've asked who produced jungle corns this year (which admittedly is only a few people) indicated that they always have a high ratio of males to females.

A lot of work has been put toward testing temperature dependent sexing of crested geckos and no one has come up with any convincing evidence. Some will claim their temperatures produce more males or females, but this is usually a case of someone making claims based on a small sample size (like a few holdbacks for example). I don't know how much effort has been put into the temperature dependent sex determination (TDSD) hypothesis for chahouas, but since they require roughly the same incubation temperatures as cresteds I doubt that would be the factor responsible for all the male crested/chahoua hybrids.

Snakes have definite sex chromosomes. Instead of XX female and XY male as in humans, snakes have ZZ male and ZW female sex inheritance. The expected ratio of males to females in any cross is thus 50:50. If there is a skewed ratio toward males in hybrid crosses, one might suspect ZW female embryos are less likely to survive to hatching than males but that is just a guess.

Lizards don't seem to have obviously different sex chromosomes. In certain situations where one takes female mollyfish from one river in Mexico and mate them to males from another river, all progeny are male. Perhaps lizard hybrids have the same type of sex determination.

Bigfoot.

Apparently male auriculatus are easier to come by than females, so perhaps it's a rhaco trait that is emphasised moreso in hybrids? Just a thought.

Actually male gargoyle geckos are less abundant than females. I never really thought of it as a very drastic overexpression of females, but males are definitely worth more since there aren't as many of them on the market.