Twice every second year: reproduction in the pig-nosed turtle, Carettochelys insculpta, the wet-dry tropics of Australia

J. S. Doody, A. Georges and J. E. Young
Journal of Zoology, 259, 179-188,
The reproductive biology of female pig-nosed turtles Carettochelys insculpta was studied for 4 years in the wet–dry tropics of northern Australia. Females matured at around 6 kg body mass (38.0 cm curved carapace length,30.5 cm plastron length). Turtles produced egg sizes and clutch sizes similar to that of other turtle species similar in size. Turtles reproduced every second year, but produced two clutches within years, about 41 days apart. Thus, it appeared that females were energy limited, possibly due to the low available energy content of the dry season diet (aquatic vegetation).

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