Social structure of a semi-free ranging group of mandrills (Mandrillus sphinx): a social network analysis

PloS One
Céline BretOdile Petit

Abstract

The difficulty involved in following mandrills in the wild means that very little is known about social structure in this species. Most studies initially considered mandrill groups to be an aggregation of one-male/multifemale units, with males occupying central positions in a structure similar to those observed in the majority of baboon species. However, a recent study hypothesized that mandrills form stable groups with only two or three permanent males, and that females occupy more central positions than males within these groups. We used social network analysis methods to examine how a semi-free ranging group of 19 mandrills is structured. We recorded all dyads of individuals that were in contact as a measure of association. The betweenness and the eigenvector centrality for each individual were calculated and correlated to kinship, age and dominance. Finally, we performed a resilience analysis by simulating the removal of individuals displaying the highest betweenness and eigenvector centrality values. We found that related dyads were more frequently associated than unrelated dyads. Moreover, our results showed that the cumulative distribution of individual betweenness and eigenvector centrality followed a power function, wh...Continue Reading

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Sep 1, 2014·Behavioural Processes·Cibele BiondoVera S R Bussab
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Apr 10, 2021·Current Biology : CB·Camille TestardLauren J N Brent

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Software Mentioned

Gephi
Socprog
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SPSS

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