1998 Fiscal Year Final Research Report Summary
Agonistic behavior and affiliative behavior in monkeys
| Project/Area Number |
08610085
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
実験系心理学
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| Research Institution | Osaka University |
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Principal Investigator |
IMAKAWA Shinji Osaka Univ., Fac.of Human Sciences, Research Associate, 人間科学部, 助手 (00211756)
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| Co-Investigator(Kenkyū-buntansha) |
OHSHIBA Nobuaki Osaka Univ., Fac.of Human Sciences, Research Associate, 人間科学部, 教務職員 (20283715)
KANAZAWA Tadahiro Osaka Univ., Fac.of Human Sciences, Research Associate, 人間科学部, 助手 (30214430)
ITOIGAWA Naosuke Mukogawa Women's Univ.., Fac.of Letters, Professor, 文学部, 教授 (90027962)
NAKAMICHI Masayuki Osaka Univ., Fac.of Human Sciences, Associate Professor, 人間科学部, 助教授 (60183886)
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| Project Period (FY) |
1996 – 1998
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| Keywords | Japanese monkey / Agonistic interation / Affiliative interaction / Proximity / Long-term relationship / 社会的緊張 / 環境 |
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| Research Abstract |
This study was designed to characterize the affiliative relationships among immature Japanese monkeys of the same age in free-ranging group during the first 4 years of life. Most male and female immature monkeys showed a consistent preference for proximity within their cohort to certain same-sex individuals whose dominance ranks were immediately adjacent to their own throughout the first 4 years. Such prolonged proximity relationships between peers of the same age were largely a reflection of those between their mothers. Therefore, the affiliative relationships between peers seem to be formed under the influence of social relationships between the mothers.
The use of perches to enrich the environment of group-housed Japanese monkeys was also assessed. When the monkeys were housed in a cage which contained many wooden perches to increase the usable space, the rate of agonistic interactions as well as the rates of spatial proximity and social grooming decreased in comparison with those evident when they were housed in a cage without such perches. These results suggest that agonistic interactions were reduced which are likely to occur more frequently in crowded conditions and the monkeys displayed affiliative behavior more frequently in a cage without perches, i.e., more crowded conditions, than in a cage with in a cage. Attempts to enrich the environment of group-housed monkeys may lead to a better understanding of their behavioral flexibility and social adjustment.
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