Patterns of female dominance in Propithecus diadema edwardsi of Ranomafana national park, Madagascar

American Journal of Primatology - Tập 61 Số 4 - Trang 173-185 - 2003
Sharon T. Pochron1, John Fitzgerald1, Christopher C. Gilbert1, Diana Lawrence1, Marie Grgas1, Georges Rakotonirina2, Raymond Ratsimbazafy2, Rémi Rakotosoa2, Patricia C. Wright1,3
1Department of Anthropology, State University of New York at Stony Brook, Stony Brook, New York
2Institute for the Conservation of Tropical Environments, Antanarivo, Madagascar
3Institute for the Conservation of Tropical Environments, Stony Brook, New York

Tóm tắt

AbstractMany lemur species are characterized by some form of female dominance, ranging from female feeding priority to complete female dominance, although this is a rare trait in primates and other mammals. The status of the Milne‐Edwards' sifaka (Propithecus diadema edwardsi), a diurnal lemur, is ambiguous. Some short‐term studies have found little or no aggression. The aim of the current, long‐term study was to quantify the intersexual‐dominance patterns of this sifaka. The distribution, outcome, and context of aggressive interactions were studied in four groups of wild sifakas. The majority of intersexual aggressive interactions were decided, with the loser expressing submissive behavior. Intersexual aggressive interactions occurred in all social contexts, and within all social contexts the females won the vast majority (92.7–96.0%) of aggressive interactions. While aggression rates were low (0.22/hr), this evidence suggests female dominance. We propose that female dominance exists because it provides a fitness advantage to both males and females. Am. J. Primatol. 61:173–185, 2003. © 2003 Wiley‐Liss, Inc.

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