Maintenance mechanism of the social system of wild felid- the sexual difference in the process of the establishment of territory

采用无线电跟踪法、自动照相法和夜间观察法对冲绳伊洛莫特岛的猫虹膜紧张症进行了野外调查。观察了牧场利用方式、母子关系、牧场从母体到子代的遗传过程中的性别差异。解释说，雌鸟活动范围内的一些核心区域对它们很重要，特别是对繁育的雌鸟来说。繁殖雌鸟的栖息地中低洼湿地所占比例较大。低洼湿地似乎与丰富的食物资源密切相关，对雌性繁殖时间表进行了估计，这似乎是分析社会制度的重要组成部分。此外，男性似乎根据他们的个性(质量、地位等)而变化。本研究还利用DNA指纹技术研究了个体间的亲缘关系。记录并分析了孟加拉毛花豹猫科动物的野外体征，以了解其栖息地利用和食物习性。本研究的结果与我们以前研究中获得的两种野生猫科动物和野猫的数据相结合。讨论了猫科动物社会系统的灵活性，提出了猫科动物社会系统进化的假说。

This field survey on the Iriomote cat Felis iriomotensis was conducted on Iriomote Island in Okinawa using radio-tracking method, auto-photographing method and night observation method. Sexual difference in home range utilization pattern, mother-offspring relationship, the inheritance process of home range from mother to offspring were observed. It was clarified that some core areas in females' home ranges were important for them, especially for breeding females. The home ranges of breeding females contained the low wetland in larger proportion. The low wetland seemed to be closely related the abundant food resource.Breeding schedule, which seemed to be important to analyze the social system was estimated for females. Furthermore, males seemed to be variable depending on their individuality (quality, status etc.). DNA finger printing method was also applied to investigate the kin relationship among individuals.The field signs of the Tushima leopard cat Felis bengalensis euptilura was recorded and analyzed to investigate its habitat utilization and food habits.The results in this study was analyzed together withe the data on these two wild felids and on the feral cats which had been gained in our previous studies. The flexibility of the social system of felids was discussed and the hypothesis on the evolution of it are going to be constructed.