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The foraging adaptation of chimpanzees, and the recent behaviors of the provisioned apes in Gombe and Mahale National Parks, Tanzania

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Human Evolution

Abstract

Current understandings of chimpanzee behavior and social organization are based largely on twenty years of studies of provisioned chimpanzees in Gombe and Mahale National Parks. These data indicate that chimpanzees are aggressive, dominance-seeking and fiercely territorial. Reports from a number of naturalistic (nonprovisioning, unobtrusive) field studies contrast sharply. All report open groups of nonaggressive, nonhierarchical chimpanzees, which repeatedly fission for foraging and reunite as a larger social group. Because of the authority accorded the Mahale and Gombe reports, the naturalistic studies are often discounted. In this paper foraging theory is used to show that the recent behaviors of the artificially fed apes are maladaptive, while those of the nonprovisioned, wild chimpanzees are excellent foraging strategy. It is suggested, but not concluded, that the recent behaviors of the Gombe and Mahale chimpanzees may be frustration-induced responses to feeding methods which introduce a blockage between the apes and the desirable bait foods.

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  1. 1969 King's Avenue, V7V 2B6, West Vancouver, B.C., Canada

    M. Power

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Power, M. The foraging adaptation of chimpanzees, and the recent behaviors of the provisioned apes in Gombe and Mahale National Parks, Tanzania. Hum. Evol. 1, 251–265 (1986). https://doi.org/10.1007/BF02436583

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  • DOI: https://doi.org/10.1007/BF02436583

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