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A Study of the Behavioural Modification of the House Musk Shrew in the Process of Domestication

家麝鼩驯化过程中行为改变的研究

基本信息

批准号：
60450012
负责人：
ISHII Kiyoshi
金额：
$ 3.39万
依托单位：
Nagoya 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：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60450012/
关键词：
Domestication Caravaning Sexual behaviour Activity rhythm 初期行動生殖(性)行動

项目摘要

Domestication is the operation by which animals are artificially bred through successive generations after having been freed from the natural selection pressure. Investigations of its effect are concerned with the evolution of behaviour, as they provide us with basic informations on how a behaviour pattern becomes specified while increasing its variation within species. Significance of this approach is greater in the behavioural studies, since evolutionary processes cannot be reproduced with fossil remains.Based on the fact of strain differences obtained with inbred mice (Tsuji & Ebihara,1980; Tsuji et al.,1982), the following hypothesis is proposed: Domesticated animals have been pressed for their adaptation by twofold factors, genetic and environmental. A basic trait of behaviour seen as the strain character is an outcome of these controlling forces. Different strains have specified different patterns, which are originally built-in as the potential modes of wild animals of the specie … More s in coping with their environment. This hypothesis must be tested by breeding wild animals artificially.The house musk shrew (Suncus murinus) is used considering its phylogenetic status. Since 1980 we have domesticated wild animals of this species for our research purpose. The animals were originally captured in Tarama Island, Okinawa, and were transported to our laboratory, where they have been bred by non-sib mating in the closed colony.Two behaviours of the basicly adaptive significance are observed; one is the caravaning and the other is the sexual behaviour. Additionally, activity rhythms are recorded and analyzed.We have so far domesticated wild animals of the Tarama line for three generations and have collected data on the target behaviours mentioned above. Although the effect of domestication has not been elaborated yet, data on the behaviours of the already domesticated animals have been successfully collected by the laboratory observations. Their caravaning and sexual behaviours have been described in detail as well as their activity rhythms.It is our task of immediate necessity to establish reliable breeding procedure, in order that we can accumulate sufficient amount of data on the target behaviours for the early stage of domestication. Less

驯化是动物在摆脱自然选择的压力后通过连续几代人工繁殖的操作。对它的影响的调查与行为的进化有关，因为它们为我们提供了关于行为模式如何在增加物种内变异的同时变得特定的基本信息。这种方法在行为学研究中的意义更大，因为进化过程不能用化石遗迹再现。1982年），提出了以下假设：驯化动物受到遗传和环境双重因素的压力。一个基本的行为特征被看作是紧张的性格是这些控制力量的结果。不同的品系有着不同的模式，这些模式原本是作为该物种野生动物的潜在模式而内置的 ...更多信息在适应环境方面。这一假设必须通过人工饲养野生动物来验证，考虑到其系统发育地位，我们选择了家麝鼩（Suncus murinus）。自1980年以来，我们已经驯化了这个物种的野生动物用于我们的研究目的。从冲绳的多良间岛捕获并运至本实验室，在封闭群中进行非同胞交配，观察到两种具有基本适应意义的行为，一种是大篷车行为，另一种是性行为。此外，还记录和分析了活动节律。我们迄今已驯化了三代塔拉马系野生动物，并收集了上述目标行为的数据。虽然驯化的影响尚未详细说明，但通过实验室观察已成功收集了关于已驯化动物行为的数据。我们的任务是建立可靠的育种程序，以便为驯化的早期阶段积累足够的目标行为数据。少