A within-group gang attack on a young adult male chimpanzee: Ostracism of an ill-mannered member?

During a long-term study of wild chimpanzees in Tanzania, an unusual gang attack on a young adult male by the alpha male and seven other members of the same unit group (community) was observed and videotaped. Before the gang attack, the victim had not pant-grunted to the alpha male or to other adult...

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Bibliographic Details
Published in:Primates 1995-04, Vol.36 (2), p.207-211
Main Authors: Nishida, Toshisada, Hosaka, Kazuhiko, Nakamura, Miho, Hamai, Miya
Format: Article
Language:English
Subjects:
Pan troglodytes
Primates
Primatology
Social behaviour
Social interaction
Violence
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Summary:During a long-term study of wild chimpanzees in Tanzania, an unusual gang attack on a young adult male by the alpha male and seven other members of the same unit group (community) was observed and videotaped. Before the gang attack, the victim had not pant-grunted to the alpha male or to other adult males except for the second-ranked male, but had often bullied adult females without apparent reason. The alpha male's violent behavior, therefore, might have been punishment of or revenge against the ill-mannered young chimpanzee. This is the first record of an adult male other than an ex-alpha male becoming the object of ostracism by wild chimpanzees, although the victimized male did manage to return to the group after more than three months, when an ex-alpha male succeeded in reestablishing his former position.
ISSN:0032-8332
1610-7365
DOI:10.1007/BF02381346