Behavior of old Japanese monkeys

老日本猴子的行为

• 批准号: 02451015
• 负责人: ITOIGAWA N.
• 金额: $ 2.82万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02451015/
• 关键词: Japanese Monkey; Old; aging; behavior; social Rank; 母性行動; 睡眠; 活動性

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.

研究人员分析了20岁以上的日本老猴子在自由放养和圈养两种情况下的行为，并与较年轻的猴子进行了比较。(1)放养情况：年长的雌性比年轻的雌性更经常独处，也更不活跃。此外，年长的雌性花在梳理其他群体成员身上的时间比其他群体成员要少。然而，他们能够保持与亲属相似的社会地位，而不会降低地位。最重要的事实是，老年妇女即使失去了生育能力，仍然是社会生物。阿尔法雄性（排名第一的雄性）保持着他的地位，即使他的运动能力似乎不如其他雄性，因为他年纪大了。这是因为许多女性倾向于跟随这个老的雄性领袖，而不变成其他男性。(2)囚禁：24岁以上老年女性6例中有4例月经周期不规律，其余2例为老年不育。老年雌性比年轻雌性更容易表现出夜间清醒和白天困倦。老年雌性对后代的照顾行为与年轻雌性相似。

项目成果

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

糸鱼川，N.：“日本猴子自由放养群体的人口组成和繁殖参数”灵长类动物。

Imakawa,S.: "Playmate relationships of immature free-ranging Japanese monkeys at Katsuyama" Primates.31. 509-521 (1990)

Imakawa,S.：“胜山未成熟的自由放养的日本猴子的玩伴关系”灵长类动物.31。

Minami, T.: "Comparative and Developmental Psychology." Sophia.

Minami, T.：“比较与发展心理学”。

Itoigawa, N.: "Demography and reproduction parameters of a free-ranging group of Japanese macaques (Macaca fuscata) at Katsuyama." Primates. 33. 49-68 (1992)

糸鱼川，N.：“胜山自由放养的日本猕猴（Macaca fuscata）群体的人口统计和繁殖参数。”

南 徹弘: "比較発達心理学" ソフィア, (1992)

Tetsuhiro Minami：“比较发展心理学”索菲亚，（1992）