Abstract:
: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 (Pan paniscus), 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.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Martin JS,Staes N,Weiss A,Stevens JMG,Jaeggi AVdoi
10.1098/rsbl.2019.0232subject
Has Abstractpub_date
2019-08-30 00:00:00pages
20190232issue
8eissn
1744-9561issn
1744-957Xjournal_volume
15pub_type
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