Coevolution of facial expression and social tolerance in macaques.
Am J Primatol
; 74(3): 229-35, 2012 Mar.
Article
em En
| MEDLINE
| ID: mdl-24006541
ABSTRACT
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.
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Base de dados:
MEDLINE
Assunto principal:
Comportamento Social
/
Evolução Biológica
/
Expressão Facial
/
Macaca
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Am J Primatol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos