Adams One of the best-studied reptiles is the European pond turtle, Emys obicularis. One remarkable finding is that the injection of an aromatase inhibitor into the eggs of an all-female parthenogenetic species of lizards causes the formation of males Wibbels and Crews The distinction between chromosomal sex-determination systems and TSD is often blurred because the sex of some species — such as the three-lined skink Bassiana duperreyi and the central bearded dragon Pogona vitticeps — is determined by sex chromosomes, but this is over-ridden by temperatures that are tolerable but extreme.
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Affiliations All authors 1. Gen Comp Endocrinol96 201 Nov Crews D. Nakamura M Sex determination in amphibians. PLOS One.
However, manipulation of estrogen levels rarely mimics the precise timing of temperature effects on expression of gonadal genes, as occurs with TSD. Forger NG. Experimental evidence of masculinization by continuous illumination in a temperature sex determination teleost Atherinopsidae model: is oxidative stress involved?
Past, present and future of epigenetics in brain sexual differentiation. It has been proposed  that temperature acts on genes coding for such steroidogenic enzymesand testing of homologous GSD pathways has provided a genic starting point. This website requires cookies, and the limited processing of your personal data in order to function.
They conjectured that disruptive selection produced by variation in the environment could result in an evolutionary transition from ESD to GSD Bull, Vogt, and Bulmer, To arrive at the top five similar articles we use a word-weighted algorithm to compare words from the Title and Abstract of each citation.
Cited by: 5 articles PMID: You have free article s left. In these reptiles, the temperature of the eggs during a certain period of development is the deciding factor in determining sex, and small changes in temperature can cause dramatic changes in the sex ratio Bull Nature has provided many variations on her masterpiece.
While aromatase is involved in more processes than only TSD, it has also been shown to play a role in certain tumor development.