Abstract:
:Individuals who are well integrated into society have greater access to resources and tend to live longer. Why some individuals are socially isolated and others are not is therefore puzzling from an evolutionary perspective. Answering this question requires establishing the mix of intrinsic and contextual factors that contribute to social isolation. Using social network data spanning up to half of the median adult lifespan in a gregarious primate, we found that some measures of social isolation were modestly repeatable within individuals, consistent with a trait. By contrast, social isolation was not explained by the identity of an animal's mother or the group into which it was born. Nevertheless, age, sex and social status each played a role, as did kin dynamics and familiarity. Females with fewer close relatives were more isolated, and the more time males spent in a new group the less isolated they became, independent of their social status. These results show that social isolation results from a combination of intrinsic and environmental factors. From an evolutionary perspective, these findings suggest that social isolation could be adaptive in some contexts and partly maintained by selection.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Brent LJN,Ruiz-Lambides A,Platt MLdoi
10.1038/s41598-017-18104-4subject
Has Abstractpub_date
2017-12-19 00:00:00pages
17791issue
1issn
2045-2322pii
10.1038/s41598-017-18104-4journal_volume
7pub_type
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