Fishery Technological Studies on Gill Net and Shell Dredge for Fishing Selection and Fishing Efficiency

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  • 刺網・桁網の漁獲選択性と漁獲効率に関する水産工学的研究
  • 〔日本水産工学会〕学会賞受賞講演 刺網・桁網の漁獲選択性と漁獲効率に関する水産工学的研究
  • ニホン スイサン コウガッカイ ガッカイショウ ジュショウ コウエン サシアミ ケタアミ ノ ギョカク センタクセイ ト ギョカク コウリツ ニ カンスル スイサン コウガクテキ ケンキュウ

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The mechanism of fishing was clarified for salmon drift gill net of the northern sea at fishing course. The method of obtaining a new original fishing selection curve from a dynamic condition when the fish was maintained in a mesh was designed, and the factor that influenced the fishing selection by the numerical analysis was investigated. The relation between a size and a proper diameter of the mesh of the gill net was examined. The analysis of the fishing mechanism of shell dredge that caught the shell dove in sand and lived was advanced, the probability model by which the shell did not get out from the packing part and the bag net part was set, and selected curve of shell dredge was presumed.

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