Sexual Differentiation in Hatchling Loggerheads (Caretta caretta) Incubated at Different Controlled Temperatures
Yntema CL and Mrosovsky N. 1980. Sexual Differentiation in Hatchling Loggerheads (Caretta caretta) Incubated at Different Controlled Temperatures. Herpetologica. 36(1):33-36
A clutch of Caretta caretta eggs was divided into subgroups and incubated at constant temperatures ranging from 22°-36°C in 2° steps. Hatching occurred at 26°-34°C. At 30°C both males and females developed. Above 30°C only females resulted; below 30°C only males resulted. At hatching the gonads were differentiated as ovaries with a conspicuous germinal epithelium, or as testes with well developed primary sex cords. The oviducts in males were not resorbed at hatching.
- Type
- Journal Article
- Authors
- Yntema, C; Mrosovsky, N
- Units
- SFCN
- Keywords
- Caretta, Cheloniidae, Development, Eggs, Reptilia, Sex, Temperature, Testudines