垣網の阻止,誘導効果
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- 井上 喜洋
- 水産工学研究所
書誌事項
- タイトル別名
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- Behaviours of fish schools in set-net fishing ground. VII. Effect of blocking and leading fish school by set-net leader.
- 定置網漁場における魚群行動に関する研究 VII 垣網の阻止,誘導効果
- カキアミ ノ ソシ ユウドウ コウカ
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Many fish schools were caught owing to the effect of blocking and leading their courses by the set-net leader-net. The behaviour of the fish schools was investigated in the set-net fishinggrounds around the coast of Japan using a scanning sonar for determining the function of theleader-net. The leader-net was effective in blocking off the course of fish school, although itsmesh size was large enough for the fish to pass through. Only 8 percent of the fish schools passedthrough the leader-net, while 76 percent of fish schools encountered the leader-net and moved along it. There were three times as many fish schools moving offshore than toward the coast along the leader-net. The leader-net influenced the fish schools in the area which extended 60m from it. The encountering angle of the fish school's course against the leader-net shows that they had already tended to move offshore. The blocking and leading effect of the leader-net is regarded as being attributed to a tactic movement.
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 53 (7), 1135-1140, 1987
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
- 1390282681389961984
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- NII論文ID
- 130001544173
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
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- NDL書誌ID
- 3147561
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
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