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Type: Artigo de periódico
Title: Vocal Behavior Of Black-fronted Titi Monkeys (callicebus Nigrifrons): Acoustic Properties And Behavioral Contexts Of Loud Calls.
Author: Caselli, Christini B
Mennill, Daniel J
Bicca-Marques, Júlio César
Setz, Eleonore Z F
Abstract: Loud calls can be heard over long distances due to their high amplitude and low frequency. These calls are commonly used for both within- and between-group communication in many bird and primate species. In the Neotropics, mated pairs of socially monogamous titi monkeys (genus Callicebus) emit conspicuous, coordinated loud calls. These vocalizations appear to play a role in territorial defense, a hypothesis derived from studies of only three of the 31 recognized Callicebus species. Here, we describe the acoustic properties and organization of the loud calls of black-fronted titi monkeys (Callicebus nigrifrons). We compare the behavioral and ecological contexts associated with these vocalizations to investigate their role in within- and between-group communication, resource defense, and mate defense. Black-fronted titi monkeys create loud calls by combining a finite number of syllables to form more complex phrases, which are assembled to compose long sequences of loud calls. Bioacoustic features distinguish the loud calls used in different contexts, involving communication within- and between-groups. We found support for the hypothesis that vocalizations used for between-group communication are cooperative displays used by the mated pair and other group members to regulate access to important food resources, such as fruits. On the other hand, we only found weak support for the mate defense hypothesis.
Subject: Acoustic Analysis
Mate Defense
Territorial Defense
Vocal Communication
Citation: American Journal Of Primatology. v. 76, n. 8, p. 788-800, 2014-Aug.
Rights: fechado
Identifier DOI: 10.1002/ajp.22270
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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