形状と大きさの異なる水槽内における魚群行動について

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タイトル別名
  • Fish Schooling Behavior in Water Tanks of Different Shapes and Sizes.
  • ケイジョウ ト オオキサ ノ コトナル スイソウナイ ニ オケル ギョグン コ

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This paper describes the influence of water tank shape and size on the schooling behavior of fish. In this experiment, we used two dimensional water tanks of two different shapes, i.e. circular and square, of various diameters and side lengths between 50 and 125cm. Fish schooling behavior was expressed mathematically in terms of the Sannomiya and Matuda model which comprises of seven linear forces influencing fish behavior. The results showed that all forces except the propulsive force were independent of tank size and that schooling and attractive forces against the walls were strongest in the circular tanks. The random force was greatest in magnitude, accounting for approximately 60-75% of the total, followed by the repulsive force to the walls and the schooling force which affected fish schooling behavior. Fish schooling in square tanks tended to behave irregularly and remain in the tank corners.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 59 (8), 1279-1287, 1993

    公益社団法人 日本水産学会

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