, Volume 22, Issue 3, pp 309–329 | Cite as

Maternal and alloparental care in a troop of free-ranging Japanese monkeys

  • Mariko Hiraiwa


In four years of observation of a free-ranging Japanese monkeys, reproductive rate, physical development of infants, maternal care and alloparental care were studied. Primiparous mothers, orphanned mothers and old mothers showed different types of maternal care from typical multiparous mothers, and the reproductive success of each of these categories of mother also differed. Among nulliparae, 2-year-old females showed the most interest in infants. Adult females were generally indifferent to other females' infants and came to act aggressively toward them with increasing age and maternal experience.


Reproductive Success Adult Female Animal Ecology Maternal Care Reproductive Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Japan Monkey Centre 1981

Authors and Affiliations

  • Mariko Hiraiwa
    • 1
  1. 1.Department of Anthropology, Faculty of ScienceThe University of TokyoTokyoJapan

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