ヒメダカにおける摂食行動の社会的促進 : I.社会的促進率の経時変化の再検討

概要

論文の詳細を見る
In the first report, the social facilitation in feeding behavior of the Himedaka was indicated by the facilitation ratio (F.R.) based on total feeding amounts. In this paper, it is asserted that feeding rate is more appropriate than the total feeding amounts in the evaluation of the social facilitation, The following new equation of the relation between time elapsed (■) and feeding rate (ν) is proposed : ν=ae^<-et>+b. The values of the constants a, b and c are determined according to both the number of stimulators and sex. The reason for the concave-type change of the social facilitation ratio during the early period of the experiment is re-examined using this equation, and it is shown that the change depends on the hunger level of experimental fish before the start of the experiments. Moreover, analysis of experimental data based on this equation suggests that ae^<-et> shows the fasting effect and b indicates the 'presence recognition effect' caused by the presence of companion animals (stimulators). A weak point of the social facilitation ratio based on total feeding amounts is discussed in the Iight of the present results.
1976-12-31