Facial width-to-height ratio is associated with agonistic and affiliative dominance in bonobos ( <i>Pan paniscus</i> )
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- J. S. Martin
- Behavioral Ecology Lab, Department of Anthropology, Emory University, Atlanta, GA, USA
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- N. Staes
- Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium
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- A. Weiss
- Department of Psychology, School of Philosophy, Psychology and Language Sciences, The University of Edinburgh, Edinburgh, UK
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- J. M. G. Stevens
- Centre for Research and Conservation, Royal Zoological Society of Antwerp, Antwerp, Belgium
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- A. V. Jaeggi
- Behavioral Ecology Lab, Department of Anthropology, Emory University, Atlanta, GA, USA
説明
<jats:p> Facial width-to-height ratio (fWHR) is associated with social dominance in human and non-human primates, which may reflect the effects of testosterone on facial morphology and behaviour. Given that testosterone facilitates status-seeking motivation, the association between fWHR and behaviour should be contingent on the relative costs and benefits of particular dominance strategies across species and socioecological contexts. We tested this hypothesis in bonobos ( <jats:italic>Pan paniscus</jats:italic> ), who exhibit female dominance and rely on both affiliation and aggression to achieve status. We measured fWHR from facial photographs, affiliative dominance with Assertiveness personality scores and agonistic dominance with behavioural data. Consistent with our hypothesis, agonistic and affiliative dominance predicted fWHR in both sexes independent of age and body weight, supporting the role of status-seeking motivation in producing the link between fWHR and socioecologically relevant dominance behaviour across primates. </jats:p>
収録刊行物
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- Biology Letters
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Biology Letters 15 (8), 20190232-, 2019-08
The Royal Society
