Advertisement calls of six species of anurans from Bali, Republic of Indonesia

We describe quantitatively the advertisement calls of six species of anurans from Bali and the release call of three of these. The advertisement calls of three of the species and the three release calls have not been described previously to the best of our knowledge. This is the first study that describes calls from anurans of the island of Bali. Advertisement call characteristics are discussed in light of within-individual and between-individual variation. For the three species with previously published accounts of their advertisement calls we compare the data obtained in Bali with other accounts. While Bufo melanostictus did not show a substantial difference in advertisement calls from Coorg (India), the calls of Balinese Fejervarya (Limnonectes) limnocharis show substantial differences with those recorded in Coorg (India). Furthermore, the Balinese recordings of Polypedates leucomystax are similar to recordings obtained by other authors in Negros (Philippines), the Malaysian part of Borneo, and from one of the morphs present in peninsular Malaysia, while being clearly different from recordings of populations from Thailand, Polillo (Philippines), and from the other morph recorded in Malaysia.