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DOMINANCE RANK AND MATING STRATEGY IN Japanese MACAQUES

日本猕猴的优势等级和交配策略

基本信息

批准号：
08640803
负责人：
OHSAWA Hideyuki
金额：
$ 1.28万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640803/
关键词：
Mating strategy Dominica rank female choice Paternity discrimination hormonal assay Hinde index 非侵襲的ホルモンアッセイ

项目摘要

This reseat project aims to analyze maintenance mechanism of the reproductive groups and the reproductive significance of group members in the promiscuous society of Japanese macaques. The subject groups are the enclosed Wakasa group in Primate Research Institute and the wild groups in our Koshima field observation station. The effect of the male competition, female choice and their dominance rank to mating success and reproductive success were investigated (Ohsawa). Blood and other samples were taken from newborn babies in Wakasa group in 1996 and 1997. Their paternity was investigated through micro-satellite DNA analysis. Behavioral data were collected during the mating season in 1996 and 1997. Three males and 3 females were chosen as focal sample animals. The degree of influence of female choice and male competition to mating success (and reproductive success) was measured through Hinde index. This measurement, however, reflects both female choice and male competition intermingled. The index was modified and used for the analysis of the data. The result shows roughly that female choice dominated male competition for mating succcess, though the analysis was not yet completed. In the Koshima groups, in which the matrilineal family tree for 30 years is drown, the patrilineal family tree is now going to be made, though only some of data were analyzed. The patrilineal family tree will provide the knowledge about the whole mating system of wild Japanese macaques, when it is completed.Physiological research provided the methodology for hormonal analysis without catching monkeys (Shimizu). Based on this method the menstrual cycle of females in Wakasa group was detectd. This method will promote field reproductive studies of wild primates.

本项目旨在分析日本猕猴滥交社会中生殖群体的维持机制和群体成员的生殖意义。实验对象为灵长类动物研究所封闭的若狭组和我们Koshima野外观测站的野生组。研究了雄性竞争、雌性选择及其优势等级对交配成功和繁殖成功的影响（Ohsawa）。1996年和1997年，从Wakasa组的新生儿身上采集了血液和其他样本。通过微卫星DNA分析鉴定父子关系。在1996年和1997年的交配季节收集了行为数据。选取雄性3只，雌性3只作为重点样本动物。通过Hinde指数来衡量雌性选择和雄性竞争对交配成功（和繁殖成功）的影响程度。然而，这一测量反映了雌性选择和雄性竞争的混合。对该指数进行了修改，并用于数据分析。尽管分析尚未完成，但结果大致表明，女性的选择主导了男性对交配成功的竞争。在过去30年的母系家谱已经结束的小岛组中，虽然只分析了部分数据，但现在正在制作父系家谱。父系家谱完成后，将提供有关野生日本猕猴整个交配系统的知识。生理研究提供了不抓猴子的激素分析方法（Shimizu）。用该方法测定了Wakasa组雌性小鼠的月经周期。该方法将促进野生灵长类动物的野外生殖研究。