ADVERTISEMENT CALLS OF BOLIVIAN LEPTODACTYLIDAE (AMPHIBIA, ANURA)

The advertisement calls of 23 Bolivian anuran species in the family Leptodactylidae are described including information on calling behaviour. For each species, a characteristic audiospectrogram and oscillogram are presented. Numerical information about the spectral and temporal features of the calls is provided and, when available, the results are compared with any previous description of the calls. A phenogram based on holistic comparisons of the mating calls (audiospectrogram correlation) is presented for the genera Eleutherodactylus, Leptodactytus, and Physalaemus. The intrageneric variability of four basic call parameters is compared. The results suggest that fundamental and dominant frequency (and possibly duration for the genus Physalaemus) are the most likely variables to play a role in isolation of congeneric species.