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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Core area quality is associated with variance in reproductive success among female chimpanzees at Kibale National Park
Animal Behaviour, Volume 73, No. 3, Year 2007
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Description
Female East African chimpanzees, Pan troglodytes schweinfurthii, tend to range apart from each other in dispersed core areas, and they have dominance interactions with each other so rarely that it is difficult for observers to assess a dominance hierarchy. Nevertheless female chimpanzees can have high variance in fitness. Here, we test the hypothesis that female chimpanzee fitness variance is associated with variation in the foraging quality of their ranges. We studied range usage of 21 wild adult female chimpanzees within the Kanyawara community, Kibale National Park, Uganda. Core areas of individuals remained stable over a 9-year period and varied in their density of preferred foods. Females in neighbourhoods containing more preferred foods had elevated ovarian hormone production, shorter birth intervals and higher infant survivorship. Our results thus suggest that superior access to food may have enabled some community females to reproduce more successfully than others. Although dominance interactions are less frequent among females than among males of this species, we propose that the intensity of selection on intrasexual competition may be similar between the sexes. We discuss potential applications to other fission-fusion species. © 2006 The Association for the Study of Animal Behaviour.
Authors & Co-Authors
Emery Thompson, Melissa
United States, Cambridge
Harvard University
Kahlenberg, Sonya M.
United States, Cambridge
Harvard University
Gilby, Ian C.
United States, Cambridge
Harvard University
Wrangham, Richard W.
United States, Cambridge
Harvard University
Statistics
Citations: 178
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1016/j.anbehav.2006.09.007
ISSN:
00033472
Research Areas
Food Security
Health System And Policy
Maternal And Child Health
Sexual And Reproductive Health
Study Locations
Uganda
Participants Gender
Female