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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Modeling thermal influence on animal growth and sex determination in reptiles: Being closer to the target gives new views
Sexual Development, Volume 4, No. 1-2, Year 2010
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Description
Many species of oviparous reptiles, including crocodilians, a majority of turtles, some lizards and the 2 closely related species of Sphenodon have been shown to display temperature-dependent sex determination (TSD). Whereas it has been demonstrated very early that TSD also occurs in natural conditions, the relationship between a time series of changing temperatures and sex ratio remains a challenging problem for reptiles. We describe how a physiological model of embryo growth, gonadal development and aromatase activity can produce outputs that mimic well TSD. We provide an enhancement of a previously published model taking into account direct effect of temperature on aromatase activity. The comparison between the original model and the new one suggests that aromatase expression is controlled by a repressor factor expressed at masculinizing temperatures rather than its enhancement at feminizing temperatures. Copyright © 2010 S. Karger AG, Basel.
Authors & Co-Authors
Girondot, Marc
France, Orsay
Laboratoire Écologie, Systématique et Évolution
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Gif-sur-yvette
Université Paris-saclay
Ben Hassine, S.
France, Orsay
Laboratoire Écologie, Systématique et Évolution
France, Paris
Cnrs Centre National de la Recherche Scientifique
Tunisia, Sfax
Faculté Des Sciences de Sfax
Sellos, C.
France, Orsay
Laboratoire Écologie, Systématique et Évolution
France, Paris
Cnrs Centre National de la Recherche Scientifique
Godfrey, Matthew H.
United States, Beaufort
North Carolina Wildlife Resources Commission
Guillon, J. M.
France, Orsay
Laboratoire Écologie, Systématique et Évolution
France, Paris
Cnrs Centre National de la Recherche Scientifique
Statistics
Citations: 26
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1159/000280585
ISSN:
16615425
e-ISSN:
16615433