Journal
JOURNAL OF HERPETOLOGY
Volume 39, Issue 3, Pages 515-518Publisher
SOC STUDY AMPHIBIANS REPTILES
DOI: 10.1670/33-05N.1
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Eggs from five clutches of Chamaeleo calyptratus were incubated at 25, 28, and 30 degrees C during the period of sex determination. Sex ratios were slightly biased toward females at all temperatures but did not differ statistically from the expected 1:1 ratio of males and females. Egg survival was sufficiently high that sex-biased temperature-induced mortality cannot account for the lack of departure from 1:1 sex ratios. I conclude that the veiled chameleon has genetic sex determination (GSD) and that anecdotal accounts of temperature-dependent sex determination (TSD) for this species, and other chameleons are likely to reflect reporting or statistical bias.
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