Abstract # 230:

Scheduled for Saturday, August 19, 2006 01:45 PM-02:00 PM: Session 22 (Regency East #1) Oral Presentation

Dominance style in macaques: The baby and the bathwater

M. Cooper1,2
1Center for Behavioral Neuroscience, P.O. Box 3966, Georgia State University, Atlanta, GA 30302-3966, USA, 2Psychology Department
     Among macaques many aspects of aggression and affiliation covary, and the term dominance style has been used to describe this covariation. Although dominance style has been well described for some macaque species, little is know about other macaques. In this study I describe the dominance style for a wild, but provisioned group of Assamese macaques (Macaca assamensis) and a similar group of rhesus macaques (M. mulatta). Assamese and rhesus macaques had conciliatory tendencies of 11.2% and 6.6%, respectively. Assamese males, however, had a higher conciliatory tendency than did rhesus males (17.6% and 0%, respectively; p < .05). Likewise, both groups had similar rates of grooming, although Assamese males accounted for 34.2% of grooming bouts whereas rhesus males accounted for 5.5% (p < .05). Assamese and rhesus did not significantly differ in the proportion of fights with counter aggression or in the proportion of approaches resulting in negative outcomes (p > .05). Dominance style assessments have been typically based on the behavior of females, and since Assamese and rhesus females did not differ on the measures investigated it seems that Assamese macaques have a despotic, rhesus-like dominance style. The most notable difference between Assamese and rhesus macaques was in the behavior of males, such that Assamese males appeared to have stronger affiliative relationships with other group members, in particular other males, than do rhesus males.