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Species of the Week
Limnonectes palavanensis | Palawan Wart Frog

Amphibian News
Frog calls are typically only produced by males, with the females of some species occasionally responding. However, while studying Limnonectes palavanensis, Vallejo et al. (2017) found that advertisement calls were primarily produced by females. Males also had advertisement and courtship calls, but they only produced them sporadically. The authors also found that females aggregate and call around a single male in a lek-like formation in which the male chooses a female. Lastly, after laying eggs, females leave males to guard eggs and transport tadpoles. All of these behaviors together demonstrate the first known instance of a sex-role-reversal mating system in amphibians.

Current number of amphibian species: 7,710 (Aug 18, 2017) Newly added species