Vocal Behavior of Black-Fronted Titi Monkeys (Callicebus nigrifrons): Acoustic Properties and Behavioral Contexts of Loud Calls

Autor(es)

Caselli, Christini B. ^[1] ; Mennill, Daniel J. ^[2] ; Bicca-Marques, Julio Cesar ^[3] ; Setz, Eleonore Z. F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Biol Anim, BR-13083970 Campinas, SP - Brazil

^[2] Univ Windsor, Dept Biol Sci, Windsor, ON N9B 3P4 - Canada

^[3] Pontif Univ Catolica Rio Grande Sul, Lab Primatol, Porto Alegre, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF PRIMATOLOGY; v. 76, n. 8, p. 788-800, AUG 2014.
• Citações Web of Science: 16

Resumo

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. (C) 2014 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 08/05127-0 - Comportamento Territorial de Callicebus nigrifrons Spix, 1823 (Pitheciidae): Influência da disponibilidade e distribuição de frutos e possíveis funções dos duetos
• Beneficiário: Christini Barbosa Caselli
• Modalidade de apoio: Bolsas no Brasil - Doutorado