Longitudinal Studies of Sexual Behavior in the Oregon Troop of Japanese Macaques

  • G. Gray Eaton


For the past six years my colleagues and I have spent over 8,000 man-hours studying the Oregon troop of Japanese macaques (Macaca fuscata). The aim of this research has been to understand the mechanisms that regulate sexual and social behavior in these nonhuman primates. The investigations have followed Beach’s (1960) strategy for investigating species-specific behavior:

One merely attempts to answer three questions: How did the behavior get to be what it is? What are the external causes of the behavior? What internal mechanisms mediate it? Phrased in slightly more sophisticated terms each of these questions can be said to deal with a different class of determinants of behavior. The determinants of behavior can be subdivided into three broad categories: Historical determinants, environmental determinants, and organismic determinants, (p. 5)


Sexual Behavior Mating Season Japanese Macaque Dominance Rank Plasma Testosterone 
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Copyright information

© Springer Science+Business Media New York 1978

Authors and Affiliations

  • G. Gray Eaton
    • 1
    • 2
  1. 1.Unit of Primate BehaviorOregon Regional Primate Research CenterBeavertonUSA
  2. 2.the Department of Medical PsychologyUniversity of Oregon Health Sciences CenterPortlandUSA

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