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Whistle comparison of four delphinid species in Southeastern Brazil
Isabela M S Lima1, Luciana G Andrade1, Lis Bittencourt1
1Laboratório de Mamíferos Aquáticos e Bioindicadores Prof Izabel Gurgel (MAQUA), Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil isabelaseabra.lima@gmail.com; luciana_uff@hotmail.com; lis.bitt@gmail.com; tbisi@yahoo.com.br.
Abstract:
The present study evaluates variations in frequency and duration parameters of whistles of four dolphin species (Sotalia guianensis, Steno bredanensis, Stenella frontalis, and Tursiops truncatus), recorded in the Rio de Janeiro State Coast, Southeastern Brazil. A total of 487 whistles were analyzed. Acoustic parameters of the whistles were classified to species by discriminant function analysis. Overall classification score was 72.5%, with the highest classification score obtained for whistles of S. bredanensis and the lowest obtained for S. frontalis. Most differences were among S. bredanensis and S. guianensis, species that did not have their repertoires compared in other studies.
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