Posted by:
mrcota
at Sat Aug 12 04:34:34 2006 [ Email Message ] [ Show All Posts by mrcota ]
>>"sex was determined by the following: radiograph of the hips due to pelvic variations between the two genders, social interaction among a large group of animals, and close observation of defication due to the frequency with which hemipenis can be seen in a young deficating male monitor. Sexual dimorphism can also be noted in the shape and proportion of the head and neck even in young animals."
>>
>>This was posted on another forum I was reading and thought it was interesting. Just wondering if there was any truth to this, because KS forum has way more experienced members with monitors then the one that the above quote was posted on. Thanks.
I have my doubts about the use of a radiograph to determine sex except in more mature specimens, but then sex determination is going to be more apparent in other characteristics anyway. I would like to see more evidence on that. I believe FR or someone else used X-Rays with mixed results. Even more interesting would be to see what a CAT scan or an MRI would show.
The Varanus salvator that I have worked with always defecated in their water and I have yet to see a young male evert its hemipenes except when caught (excited/scared). Is it possible that other V. salvator from other areas that I have not worked with do evert their hemipenes? Sure, it is possible.
Noting sexual dimorphism in the shape and proportion of the head of adults is nothing new, but in young specimens (hatchlings/juveniles even sub-adults), I have not found any differences.
Cheers,
Michael
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RE: Sexual Dimorphism n Young Wat. Monitors? - mrcota, Sat Aug 12 04:34:34 2006