EFFECTS OF TRANSVERSE WIDTH PATTERN OF INTERCEPTION CONSTRUCTED IN OPEN-CHANNEL ON SWIMMING CHARACTERISTIC OF AYU, <i>PLECOGLOSSUS ALTIVELIS ALTIVELIS</i>
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- ONITSUKA Kouki
- 九州工業大学大学院 建設社会工学研究系
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- AKIYAMA Juichiro
- 九州工業大学大学院 建設社会工学研究系
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- SHIRAOKA Bin
- 奥村組
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- KASUGAI Keisuke
- 九州工業大学大学院 工学府建設社会工学専攻
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- MOMOTANI Kazuya
- 九州工業大学大学院 工学府建設社会工学専攻
Bibliographic Information
- Other Title
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- 開水路に設置した遮蔽板の横断方向間隔の変化がアユの遊泳特性に及ぼす影響
- カイスイロ ニ セッチ シタ シャヘイバン ノ オウダン ホウコウ カンカク ノ ヘンカ ガ アユ ノ ユウエイ トクセイ ニ オヨボス エイキョウ
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Abstract
It is important to secure the rest area for fish. Fish has the ordinary and dark muscle. When fish uses ordinary muscle, fish got tired. In such a situation, fish needs a rest. In this study, rest characteristic of ayu (Plecglossus altivelis altivelis) with changing the width and the number of interception was researched. The migration rates of ayu were obtained with the aid of a digital video camera. It was found that the migration speed increased with an increase of flow velocity, because ayu swim in keeping with flow velocity for prevent to be drift towards downstream. The total time of the rest increases with an increase of flow velocity.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 72 (7), III_403-III_409, 2016
Japan Society of Civil Engineers
