AN EXPERIMENTAL STUDY ON THE EFFECT OF AGGRESSIVENESS TO THE VARIABILITY OF GROWTH IN THE JUVENILE RAINBOW TROUT, SALMO GAIRDNERI RICHARDSON
スポンサーリンク
概要
- 論文の詳細を見る
Growth variability, survival rate and aggressive behaviour of the individuals of small size variation of the normal, blinded and lens-removed juvenile rainbow trout in small experimental populations were studied during five weeks. 1) Aggressive behaviour disappeared by the removal of the eyeballs but it was retained after the removal of the lens only, although in this case territorial defence became unstable. 2) The survival rate and the coefficient of variation of body weight in the blinded group were remarkably greater than those of the other two groups at the end of the experiment. 3) Between the normal and lens removed groups there were small differences in the survival rate and coefficient of variation of body weight. 4) Some mechanism other than aggressive activity, e.g. difference in olfactory scense against food materials, might cause the increase in growth variability of the blinded fish.
- 日本生態学会の論文
- 1964-12-01
著者
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Yamagishi Hiroshi
Department Of Biology Faculty Of Science Tokyo Metropolitan University
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Yamagishi H.
Department of Biology, Faculty of Science, Tokyo Metropolitan University
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