Temperatrue-dependent sex determination in the salt-water crocodile, Crocodylus porosus Schneider

Abstract

one dutch of 45 eggs of the estuarine crocodile, Crocodylus porosus, was divided into two groups and incubated at 33±0.1°C and 34±0.1°C. The per cent hatching was 69 and 79 at 33 and 34°C respectively. All the hatchlings incubated at 33° developed into females and all the hatclilings incubated at 34°C developed into males, indicating thereby that temperature-dependent sex determination takes place in this species, and that the critical temperature lies between these two temperatures.