Factors Influencing Survival and Development of Macaca nemestrina and Macaca fascicularis Infants in a Harem Breeding Situation

  • J. Erwin
Part of the Advances in Primatology book series (AIPR)


Several large breeding colonies are committed to harem or large group breeding situations, and the success of these programs clearly depends on the survival and development of the offspring. Most of the infants born at the Primate Field Station of the Regional Primate Research Center at the University of Washington are born into harem groups, but a few enter all-female or multi-male groups. Harem groups typically contain a single adult male, 8–13 adult females, and the unseparated offspring of females in the group. In many cases infants are not separated from their mothers at birth to be reared in nurseries, but are instead reared for some time in their natal or other groups. The time at which infants are separated from their mothers ranges from less than 3 months to a little more than 1 year of age, but most infants are removed from their natal groups at 5–7 months. This report focuses on survivorship of two macaque species, the pigtail macaque (Macaca nemestrina) and the crabeating macaque (M. fascicularis), under essentially identical circumstances in harem groups, and on some risk factors that operate contrary to survival in this situation.


Infant Mortality Crowded Condition Captive Group Regional Primate Research Multimale Group 
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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • J. Erwin
    • 1
  1. 1.Department of PsychologyHumboldt State UniversityArcataUSA

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