We have successfully induced XX fish to predominantly develop into phenotypic females or males by rearing them at 18 or 27 C, respectively, during the sex differentiation period 9. Genetic and environmental basis of variable sex-ratios in laboratory strains of Poeciliopsis lucida.
Gen Comp Endocrinol 77 : — In vertebrates, sex is normally determined by genotype. J Exp Biol : —
Published online Jul Crews D. Effects of natural androgens and corticosteroids on gonad differentiation in the rainbow trout, Salmo gairdneri. Moreover, the sensitive time for the effects of estrogens and their inhibitors coincides with the time when sex determination usually occurs Bull et al.
Changes in cortisol and thyroid hormone concentrations during early development and metamorphosis in the Japanese flounder, Paralichthys olivaceus. The eggs are affected by the temperature at which they are incubated during the middle one-third of embryonic development.
Ecol Appl. The species identified as having TSD in this study constitute a heterogeneous group since they include both freshwater and marine species living also both in low and high latitudes. Table 3. Genetics Selection Evolution. The ends of a continuum: genetic and temperature-dependent sex determination in reptiles.
Environmental effects on fish sex determination and differentiation. Therefore, we suggest that masculinization by high water temperature is ascribable to elevation of cortisol concentration during gonadal sex differentiation in the flounder. Figure 1. Gigascience The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.