Abstract # 4306 Event # 23:

Scheduled for Thursday, June 21, 2012 04:15 PM-04:30 PM: Session 6 (Magnolia) Oral Presentation


THE EFFECTS OF PERSONALITY AND RANK ON SOCIAL NETWORK POSITION IN CAPTIVE RHESUS MACAQUES (MACACA MULATTA)

A. L. Heagerty1,2 and B. McCowan2,3
1Animal Behavior Graduate Group, University of California at Davis, One Shields Ave, Davis, CA 95616, USA, 2California National Primate Research Center, 3Population Health & Reproduction, School of Veterinary Medicine, University of California at Davis
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     As the use of social network analysis in animal behavior increases, it is important to understand how individuals influence their own position in a social network. The present study examined the predictive power of personality and rank on social network measures as individuals were transferred from one social group to another. Personalities of 52 rhesus macaques in 4 mixed-sex groups were assessed via trait rating, and grooming interactions were recorded for 6 months. Subjects were then moved to one large social group where grooming interactions were recorded for an additional 6 months. Trait ratings were subject to exploratory factor analysis resulting in individual scores on 5 factors. Grooming interactions were used to create directed networks, from which a weighted measure of centrality was calculated for each individual in each of their two social groups (small and large). Data were analyzed using multilevel Poisson generalized linear models with model selection based on AICc weights. Personality and rank were better predictors of betweenness in the large social group than were betweenness scores from the previous social group. In addition, rank quartile was highly predictive of betweenness variance in the large group, with low-ranking animals showing little variability. Taken together, this suggests that affiliative relationships of low-ranking individuals may be constrained by their social position, whereas high-ranking individuals have social connections that are more reflective of their personality.