• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Behavior of old Japanese monkeys

Research Project

Project/Area Number 02451015
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Psychology
Research InstitutionOsaka University

Principal Investigator

ITOIGAWA N.  Osaka Univ., Fac. of Human Sciences, Professor, 人間科学部, 教授 (90027962)

Co-Investigator(Kenkyū-buntansha) IMAKAWA S.  Osaka Univ., , Fac. of Human Sciences, Research Assistant, 人間科学部, 助手 (00211756)
KANAZAWA T.  Osaka Univ., , Fac. of Human Sciences, Research Assistant, 人間科学部, 助手 (30214430)
NAKAMICHI M.  Osaka Univ., , Fac. of Human Sciences, Research Assistant, 人間科学部, 助手 (60183886)
MINAMI T.  Osaka Univ., , Fac. of Human Sciences, Associate Professor, 人間科学部, 助教授 (40030043)
吉田 敦也  大阪大学, 人間科学部, 助手 (50191573)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1991: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1990: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsJapanese Monkey / Old / aging / behavior / social Rank / 母性行動 / 睡眠 / 活動性
Research Abstract

Behavior of old Japanese monkeys aged more than 20 years were analyzed both in a free-ranging situation and in captivity, compared with younger animals.
(1) Free-ranging situation :
1. Old females spent alone more often and were less active than younger ones. Moreover, old females spent their time in grooming other group members less frequently than others. However, they were able to maintain their social ranks similar to their kin relatives, without decreasing in rank. The most important fact is that old females remain social beings even after losing their reproductive abilities.
2. The alpha-males (the first ranking male) maintained his rank even though his locomotor ability seemed to be inferior to that of other males, due to his old age. This is because many females tended to follow this old alpha male, without changing into other males.
(2) In captivity :
1. Four of six old females over 24 years old show irregular menstrual cycles, and the remaining two were in senile sterility.
2. Old females tended to show night-time wakefulness and day-time sleepiness more clearly than younger females.
3. Taking care behavior of old females toward their offspring was similar to that of younger females.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Itoigawa,N.: "Demographic composition and reproduction parameters of a free-ranging group of Japanese monkeys" Primates. 33. 49-68 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 糸魚川 直祐: "ニホンザルにおける老化と繁殖行動の変化" 実験動物. 39. 179-183 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nakamichi et al.: "Parturition in a free-ranging Japanese monkeys(Macaca tuscata)" Primates.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Imakawa,S.: "Playmate relationships of immature free-ranging Japanese monkeys at Katsuyama" Primates.31. 509-521 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 南 徹弘: "比較発達心理学" ソフィア,

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Itoigawa, N.: "Demography and reproduction parameters of a free-ranging group of Japanese macaques (Macaca fuscata) at Katsuyama." Primates. 33. 49-68 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Itoigawa, N.: "Aging and changes in Reproducive behavior in Japanese Macaques." Experimental Animals. 39. 179-183 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nakamichi, M. et al.: "Parturition in a free-ranging Japanese monkeys (Macaca fuscata)." Primates.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Imakawa, S.: "Playmate relationships of free-ranging Japanese monkeys at Katsuyama." Primates. 31. 509-521 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minami, T.: "Comparative and Developmental Psychology." Sophia.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Itoigawa,N.et al.: "Demographic composition and reproduction parameters of a freeーranging group of Japanese monkeys" Primates. 33. 49-68 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 糸魚川 直祐: "ニホンザルにおける老化と繁殖行動の変化" 実験動物. 39. 179-183 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 南 徹弘: "比較発達心理学" ソフィア, (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Itoigawa,N.,et al.: "Demographic composition and reproduction parameters of a freeーranging group of Japanese monkeys(<Macaca>___ー <fuscata>___ー)of Kutsuyama." Primates.

    • Related Report
      1990 Annual Research Report
  • [Publications] Kanazawa,T.&M.Nakamichi: "Parturition behavior during the last 3 hours prior to delivery in captive Japanese macaques." The Proceedings of the 13 Congress International Primatological Society.

    • Related Report
      1990 Annual Research Report
  • [Publications] Nakamich.M.et al.: "The Monkeys of Arashiyama:Thirtyーfive years of study in the East and the West" New York State University Press,

    • Related Report
      1990 Annual Research Report

URL: 

Published: 1990-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi