Full length paper

Análisis comparativo de la estructura del canto del anuncio de tres poblaciones de Melanophryniscus rubriventris (Vellar, 1947) (Anura: Bufonidae)

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Cuadernos de Herpetología 22 (1): 25-34, 2008 liliana_ferrari6@hotmail.com

Abstract

The structure of the acoustic signal in anurans has been considered species-specific and used even for the recognition of new indistinguishable species by morphologic characters. In this work, we presented a description of the structure of the call of Melanophryniscus rubriventris and a comparative analysis of spectral and temporal parameters of the advertisement call in three Argentine populations assigned to three traditionally recognized subspecies. The call emitted by males of M. rubriventris can be described like an acute trill formed by two segments: a first segment with a series of short, unpulsed isolated emissions followed by the second segment: a fast trill of a constant frequency of pulses. The structure of the call in two segments agrees with the descriptions made for other five species of the genus, but it differs in the temporal and spectral components. The call of the different studied populations from M. rubriventris does not reveal any significant difference. These evidences do not seem to sustain the existence of subspecies, or changes in the specific status of the Argentine populations.

Key words:

Bioacústica; Melanophryniscus; Argentina; Yungas; Poblaciones

Received: Aug. 29, 2007 ▪ Accepted: Feb. 25, 2008

Associate Editor: J. Faivovich
Ferrari, L. & Vaira, M. 2008. Análisis comparativo de la estructura del canto del anuncio de tres poblaciones de Melanophryniscus rubriventris (Vellar, 1947) (Anura: Bufonidae). Cuadernos de Herpetología 22: 25-34.