触刺激に対するζポイントと網目に遭遇した魚の前進行動への影響
書誌事項
- タイトル別名
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- .ZETA.-point against Tactile Stimulation and Its Effect to Forward Motion of Fish upon Contact with a Mesh.
- ショクシゲキ ニ タイスル ゼータポイント ト アミメ ニ ソウグウ シタ サカナ ノ ゼンシン コウドウ エ ノ エイキョウ
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説明
Two series of glass-tank experiments with blinded fish were conducted to investigate the existence of a ζ-point (a body section over which external stimulation alters forward and back ward motions of fish) against tactile stimulation and its effect in determining the direction of swimming upon contact with a net webbing. Cyprinus carpio, Salmo mykiss, Tilapia mossambica and Lepomis macrochirus were tested. Longitudinally random positions over the bodies of these fish were stimulated using thin sticks and they moved either forward or backward according to the location of the stimulated positions. Cyprinus carpio which encountered net webbing expanded in a tank proceeded into a mesh at different ratios under the conditions of three mesh sizes and three hang-in ratios. Geometrical analysis of contact of a netting twine and a fish body section indicated that the probability of proceeding into an encountered mesh increases with mesh size and is modally maximised at a certain hang-in ratio. It was concluded that, (1) a tactile ζ-point, ζt exists at a body section which is unique to each species, and (2) the probability for fish to proceed into a mesh of gillnet is affected by the position of ζt, body form and size, mesh size and hang-in ratio.
収録刊行物
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- 日本水産学会誌
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日本水産学会誌 65 (6), 991-997, 1999
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390282681388034816
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- NII論文ID
- 110003144922
- 10004983894
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
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- NDL書誌ID
- 4916234
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- 本文言語コード
- ja
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- IRDB
- NDLサーチ
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- NDLデジコレ（旧NII-ELS）
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