The Herpetological Journal
The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.
ISSN 0268-0130
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pdf 05. Geographic variation in advertisement calls among populations of Dendropsophus cruzi (Anura: Hylidae)
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Open Access
pp. 219-224
Authors: Geiziane Tessarolo, Natan Medeiros Maciel, Alessandro Ribeiro Morais & Rogério Pereira Bastos
Abstract: Anuran advertisement calls receive much attention because of their importance in mating behaviour and the recognition of conspecifics. Herein, we studied geographic variation in the advertisement call of Dendropsophus cruzi from central Brazil, to test the hypothesis that between-population differences in call parameters can be explained by geographical distance. We recorded 129 individuals from 10 populations of D. cruzi in Goiás State, Brazil, measuring call parameters of five calls of each individual. We found that dominant frequency is useful to distinguish populations, and that geographic distance is not a predictor of overall call differences. However, clinal geographical patterns were found for call duration, dominant frequency, call rate and snout-vent length (SVL). We suggest that differences in calls among populations can be due to local selective pressures.
Key words: Anuran, dominant frequency, geographical patterns, isolation by distance
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