A within-group gang attack on a young adult male chimpanzee: Ostracism of an ill-mannered member?
- 204 Downloads
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.
Key WordsChimpanzee Mahale Mountains Gang attack Pant-grunt Ostracism
Unable to display preview. Download preview PDF.
- ————, 1979. Agonistic behavior, dominance, and social structure in wild chimpanzees of the Gombe National Park. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, Menlo Park, pp. 405–427.Google Scholar
- de Waal, F. B. M., 1982.Chimpanzee Politics. Jonathan Cape, London.Google Scholar
- ————, 1986. The brutal elimination of a rival among captive male chimpanzees.Ethol. Socibiol., 7: 237–251.Google Scholar
- Goodall, J., 1986a.The Chimpanzees of Gombe. Harvard Univ. Press, Cambridge, Massachusetts.Google Scholar
- ————, 1986b. Social rejection, exclusion, and shunning among the Gombe chimpanzees.Ethol. Sociobiol., 7: 227–236.Google Scholar
- ————, 1992. Unusual violence in the overthrow of an alpha male chimpanzee at Gombe. In:Topics in Primatology, Vol. 1. Human Origins,T. Nishida,W. C. McGrew,P. Marler,M. Pickford, &F. B. M. de Waal (eds.), Univ. of Tokyo Press, Tokyo, pp. 131–142.Google Scholar
- Hamai, M., 1994. “Attractive” females for male chimpanzees?Prim. Res., 10: 33–40. (in Japanese)Google Scholar
- Nishida, T., 1979. The social structure of chimpanzees of the Mahale Mountains. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, Menlo Park, pp. 73–121.Google Scholar
- ————, 1983. Alpha status and agonistic alliance in wild chimpanzees (Pan troglodytes schweinfurthii).Primates, 24: 318–336.Google Scholar
- ———— (ed.), 1990.The Chimpanzees of the Mahale Mountains: Sexual and Life History Strategies. The Univ. of Tokyo Press, Tokyo.Google Scholar
- ————, 1994. Review of recent findings on Mahale chimpanzees: implications and future research directions. In:Chimpanzee Cultures,R. W. Wrangham,W. C. McGrew,F. B. M. de Waal, &P. G. Heltne (eds.), Harvard Univ. Press, Cambridge, Massachusetts, pp. 373–396.Google Scholar
- ————, &M. Hiraiwa-Hasegawa, 1985. Responses to a stranger mother-son pair in the wild chimpanzee: a case report.Primates, 26: 1–13.Google Scholar
- Takahata, Y., 1985. Adult male chimpanzees kill and eat a male newborn infant: newly observed intragroup infanticide and cannibalism in Mahale National Park, Tanzania.Folia Primatol., 44: 161–170.Google Scholar
- Uehara, S., M. Hiraiwa-Hasegawa, K. Hosaka, &M. Hamai, 1994. The fate of defeated alpha male chimpanzees in relation to their social networks.Primates, 35: 49–55.Google Scholar