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Primates

, Volume 26, Issue 2, pp 121–129 | Cite as

Female life history and mating patterns among the M group chimpanzees of the Mahale national park, Tanzania

  • Hiroyuki Takasaki
Article

Abstract

The mating behavior of receptive females in the M group chimpanzees (Pan troglodytes schweinfurthii) of the Mahale Mountains, western Tanzania, was studied by intensive sampling over a period of 5 months. Restrictive matings were observed only between parous females mostly in the ovulatory stage and prime adult males, in particular the alpha. Young, nulliparous and/or non-ovulatory females tended to mate with immature or low-ranking adult males. By contrast, older, parous and/or ovulatory females tended to mate with adult and higher-ranking males. These confirmed the results of a previous extensive study of the same group. In addition, gradual shift from opportunistic to restrictive matings after inter-unit-group transfer was revealed for 2 ex-K-group parous females. The findings were discussed in relation to the life history of female chimpanzees.

Key Words

Pan troglodytes schweinfurthii Chimpanzee female Female life history Sexual behavior 

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Copyright information

© Japan Monkey Centre 1985

Authors and Affiliations

  • Hiroyuki Takasaki
    • 1
  1. 1.Laboratory of Human Evolution Studies, Faculty of ScienceKyoto UniversityKyotoJapan

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