VARIAÇÃO INDIVIDUAL NO CANTO DE ANÚNCIO DE MACHOS DE Scinax fuscomarginatus (Lutz, 1925)

Abstract

Anurans use vocalizations as an important communication tool for mediating social interactions, attracting sexual partners and also for recognizing specifics, individualization, as a mechanism of interaction with a competitor, and thus for attracting females, such biological functionality acts as an influential selection factor in its intra and interindividual variations. The present work aimed to evaluate the temporal variation of the acoustic parameters of Scinax fuscomarginatus announcement corners over three years, from 2014 to 2017. We analyzed individuals of S. fuscomarginatus during the reproductive seasons in three annual segments of the same. population over the years 2014-2015, 2015-2016 and 2016-2017, using the ANOVA and Kruska-Wallis tests to compare a single annual segment with the other two to expose variations on each. The results suggest that individuals can utilize ad corners for individual recognition. The changes presented demonstrate individual responses to environmental and / or social variations (eg air temperature, distance to nearest male, energy availability, differences in densification of vocalizing males, etc.) over the years, and, Therefore, such variations influence the behavior of these animals.