Steroid hormones reverse sex in turtles

摘要: Abstract Injection of estradiol benzoate into eggs snapping turtles and painted caused all embryos to develop as females. A similar but less consistent female-determining effect was associated with injection testosterone proprionate. Both species have temperature-dependent sex determination in nature, whereby incubated at cool temperatures (25°) males warm (31°) Exogenous estrogens been shown feminize a wide variety reptiles, although feminization by well has demonstrated previously only one turtle ( Pieau, 1974 ).