Vocal Repertoire of Cebus capucinus: Acoustic Structure, Context, and Usage |
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Authors: | Julie J Gros-Louis Susan E Perry Claudia Fichtel Eva Wikberg Hannah Gilkenson Susan Wofsy Alex Fuentes |
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Institution: | 1. Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, 47405, USA 2. Proyecto de Monos, Apdo 5, Bagaces, Guanacaste, 50401, Costa Rica 3. Department of Anthropology, Behavior, Evolution and Culture Program, University of California–Los Angeles, Los Angeles, CA, 90095, USA 4. Department of Behavioral Ecology and Sociobiology, German Primate Center, 37077, G?ttingen, Germany 5. Department of Anthropology, University of Calgary, Calgary, AL, T2N 1N4, Canada 6. School of International and Public Affairs, Columbia University, New York, NY, 10027, USA
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Abstract: | Researchers studying nonhuman primate vocal repertoires suggest that convergent environmental, social, and motivational factors
account for intra- and interspecific vocal variation. We provide a detailed overview of the vocal repertoire of white-faced
capuchins, including acoustic analyses and contextual information of vocal production and vocal usage by different age-sex
classes in social interactions. The repertoire is a mixture of graded and discrete vocalizations. In addition, there is general
support for structural variation in vocalizations with changes in arousal level. We also identified several combined vocalizations,
which might represent variable underlying motivations. Lastly, by including data on the social contexts and production of
vocalizations by different age-sex classes, we provide preliminary information about the function of vocalizations in social
interactions for individuals of different rank, age, and sex. Future studies are necessary to explore the function of combined
vocalizations and how the social function of vocalizations relate to their acoustic structure, because social use of vocalizations
may play an important role in shaping vocal evolution. |
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Keywords: | capuchin Cebus capucinus communication social behavior vocal repertoire |
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