MODIFICATION OF EARLY BEHAVIOUR AND REPRODUCTIVE BEHAVIOUR IN THE PROCESS OF DOMESTICATION

摘要本研究旨在探讨驯化对食虫目臭鼩（Suncusmurinus）早期行为及繁殖行为的影响。选择适当的动物种类，后续工作所需的时间和劳动力，以及研究人员之间的合作关系是这类研究的必要条件。因此，到目前为止，只有少数研究报告。然而，这种方法有望有助于揭示适应性行为的内部变异，并为我们提供与行为进化相关的基本信息。在本项目期间，野生鼩 鼱在冲绳的Tarama岛被诱捕了两次。捕获的动物被转移到我们的动物实验室，并在那里进行驯化。本文报道了1980-1988年在Tarama进行的9年（1980-1988年）的诱捕和室内饲养的资料。结果表明，尽管高密度生境面积在减少，但野生种群数量并没有像估计的那样明显减少。然而，与其他品系相比，塔拉马的野生动物很难繁殖，这使得它的驯化不太成功。本文对驯养的中国鼩进行了迁徙和交配行为的观察，并描述了这两种行为的基本特征。

this study was to investigate the effect of domestication upon the early and reproductive behaviours of the house musk shrew Suncus murinus of the order Insectivora. Selection of the adequate animal species, time and labour necessary for the follow-up, and cooperative relations among researchiers are condition essential for this sort of studies. Due to this,only a few studies have so far-een reported. However, this line of approach is expected to contribute to disclosing the intraspacies variation of adaptive behaviour and to provide us with the basic information related to the behaviour evolution.Wild shrews were trapped in Tarama Island, Okinawa twice for this project term. The captured animals were transferred to our animal laboratory and bred there for domestication. However, we failed in obtaining the related data enough for the analysis of the domestication effect for this term, because the domestication was not so successful.We reported the data which we had collected for nine years (1980-1988) of our trapping in Tarama and breeding in the laboratory. As the data shows, the wild population has not been decreasion so markedly as was estimated, although the habitat size of high density has been reducing. However, the wild animals from Tarama are hard to breed, as compared with other lines, which has made its domestication less successful. Housing conditions and breeding procedure should be improved in the further study.Caravaning and mating behaviours were observed with the domesticated shrews and basic traits of the two behaviours were described.