Coalitions destabilize dyadic dominance relationships in male Barbary macaques ( Macaca sylvanus ) Andreas Berghänel 1,2) , Julia Ostner 1,2) & Oliver Schülke 2,3,4) ( 1 Primate Social Evolution Group, Courant Research Centre Evolution of Social Behaviour, Georg August University Göttingen, Göttingen, Germany; 2 Integrative Primate Socio-Ecology Group, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany; 3 Courant Research Centre Evolution of Social Behaviour, Georg August University Göttingen, Göttingen, Germany) (Accepted: 2 September 2011) Summary Dyadic agonistic dominance relationships are thought to result from asymmetries in both intrinsic and extrinsic power. One form of extrinsic power is the ability to solicit agonistic support from other individuals. In extreme cases extrinsic power differences may override intrinsic power differences so that physically inferior individuals attain rank positions above stronger competitors. In other cases superior extrinsic power in physically inferior individuals may destabilize the otherwise clear dominance relationships. We tested this prediction with observational data on adult males in one of three free-ranging groups of Barbary macaques at Affenberg Salem, Germany. All prime males that were subjects of this study were at least 5–8 years (average 10 years) younger than the old post-prime males that were all subordinate to them. Assuming
Behaviour – Brill
Published: Jan 1, 2011
Keywords: MALE SOCIAL RELATIONSHIPS; AFFENBERG SALEM; DOMINANCE; BARBARY MACAQUE; COALITION; RELATIONSHIP STABILITY; MACACA SYLVANUS
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