期刊
AMERICAN JOURNAL OF PRIMATOLOGY
卷 74, 期 3, 页码 229-235出版社
WILEY
DOI: 10.1002/ajp.21991
关键词
communication; social complexity; group size; Macaca
类别
资金
- Dartmouth College Junior Faculty Fellowship
The purpose of this study is to test the hypothesis that social tolerance drives the evolution of facial expression in macaques. Macaque species exhibit a range of social styles that reflect a continuum of social tolerance. Social interactions in more tolerant taxa tend to be less constrained by rank and kinship than in less-tolerant macaques. I predicted that macaques that are more tolerant would exhibit a wider range of facial displays than less-tolerant species because interactions that are open to negotiation are characterized by greater uncertainty than interactions that are constrained by rank or kinship. To test this hypothesis, I conducted a phylogenetically informed regression analysis (N = 11) using previously published data on repertoire size and two quantitative measures of social tolerance (conciliatory tendency and counter-aggression). As predicted, macaques with more tolerant social styles tended to have larger repertoires than less-tolerant species. These results support the hypothesis that increased social tolerance favors the elaboration of communication to mitigate uncertainty. Am. J. Primatol. 74: 229-235, 2012. (C) 2012 Wiley Periodicals, Inc.
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