The advertisement call of Melanophryniscus paraguayensis (Anura: Bufonidae): a species endemic to Paraguay

Reporting the characteristics of the advertisement call in anuran species is an essential aspect of their taxonomic characterization. The aim of the present study was to describe the advertisement call of Melanophryniscus paraguayensis in the Central department of Paraguay, an endemic and threatened species in the country. The advertisement call of M. paraguayensis is a complex call, featuring different note types, tonal and multi-pulsed, with a duration of 0.4–6.4 s, and a dominant frequency of 2239–2928 Hz. The data obtained were compared with available descriptions of advertisement calls from both the Melanophryniscus stelzneri group and other species within the genus Melanophryniscus.