Recent Activity. All crocodilians, most turtlesmany fishand some lizards exhibit TSD. Bull Hermaphrodite Intersex Disorders of sex development Sex reversal. Cloning and in situ hybridization analysis of estrogen receptor in the developing gonad of the red-eared slider turtle, a species with temperature-dependent sex determination.
Genomics of Developmental Plasticity in Animals. PLOS One.
Very near or at the pivotal temperature of sex determination, mixed sex ratios and more rarely intersex individuals. The lizards were female in appearance and were capable of bearing offspring, despite having the ZZ chromosomes usually associated with male lizards.
Sinauer Associates: Massachusetts.
The extent of the TSP varies a little among species,  and development within the oviducts must be taken into account in species where the embryo is at a relatively late stage of development on egg laying e. Temperature-dependent sex determination in the snapping turtle: manipulation of the embryonic sex steroid environment.
Evolution of Sex Determining Mechanisms. Estrogen represses SOX9 during sex determination in the red-eared slider turtle Trachemys scripta.
Share this article Share with email Share with twitter Share with linkedin Share with facebook. Harvey, Christine Janis, and John Heiser. Yolk steroids of maternal origin and steroids produced by the embryonic nervous system should also be considered as sources of hormones that may play a role in TSD.
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