Posted by:
BRhaco
at Wed Aug 8 17:50:49 2007 [ Email Message ] [ Show All Posts by BRhaco ]
First let me say I have TONS of respect for Terry V.-His contributions to herpetoculture in general and P. ruthveni in particular are above reproach.
However, his observations in this instance fly in the face of every formal study on the subject for the last several decades. Every single study done previously across many families, genera, and species have all confirmed that, in snakes, sex is determined chromosomally. These reults are interesting, but a much larger sample size (in the hundreds of eggs) is needed to confirm. Even then, there are other possible explanations-for example, it was suggested that higher temps lead to differential sexual mortality (female embryos tend to die during incubation at higher temps).
Given the previous history, some healthy scepticism is called for here.
Brad Chambers
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