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東京湾の小型底びき網におけるグリッドの選択性
http://hdl.handle.net/10069/21621
http://hdl.handle.net/10069/21621bf0cd98b-9540-49d3-86e2-01bffdef8f88
名前 / ファイル | ライセンス | アクション |
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suisan74_1_8.pdf (612.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-04-14 | |||||
タイトル | ||||||
タイトル | 東京湾の小型底びき網におけるグリッドの選択性 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | グリッド | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 小型底びき網 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 選択性 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | マアナゴ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | マコガレイ | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
大畑, 聡
× 大畑, 聡× 池上, 直也× 仲村, 文夫× 藤田, 薫× 松下, 吉樹 |
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著者別名 | ||||||
姓名 | Ohata, Satoshi | |||||
著者別名 | ||||||
姓名 | Ikegami, Naoya | |||||
著者別名 | ||||||
姓名 | Nakamura, Fumio | |||||
著者別名 | ||||||
姓名 | Fujita, Kaoru | |||||
著者別名 | ||||||
姓名 | Matsushita, Yoshiki | |||||
その他のタイトル | ||||||
その他のタイトル | Selectivity of grid separator with horizontal bars for beam trawl fishery in Tokyo Bay | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | マアナゴの漁獲を維持しながらマコガレイ小型魚の混獲を防ぐために,小型底びき網のコッドエンド下部に,水平のバーを配列したグリッドを取り付けた漁具を開発した。そして,バー間隔13,15,20,24mmで曳網試験を実施し,マコガレイとマアナゴに対するグリッドの選択性を調べた。両種に対するグリッドの選択性は,魚体の鉛直方向の厚みとバー間隔の比および魚のグリッドに対する反応という2つの要因を合わせることにより表現できた。また,マコガレイ小型魚がグリッドから逃避する割合は,バー間隔15,20mmでそれぞれ4割,6割と考えられた。 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Selectivity of a grid separator for marbled flounder Pleuronectes yokohamae and white-spotted conger Conger myriaster was estimated to reduce bycatch of juvenile marbled flounder while retaining commercial sizes of white-spotted conger. Four different grids made of horizontal bars (13, 15, 20 and 24mm bar spaces) fixed on the belly of the codend were tested at sea from 2002 to 2004 to develop a measure for redecing bycatch. An external covernet was attached behind the grid to catch all fish that escaped through the grid. We used three different models (logistic, Richards, and contact-logistic models) to describe grid selectivity. The contact-logistic model was chosen as the best-fit model for marbled flounder and white-spotted conger. Grid selectivity was expressed as the ratio of vertical size of the fish body to bar space for both species. Under the test conditions, we considered that a grid of 15mm bar space reduced juvenile discards of marbled flounder by 40% and caught most of the white-spotted conger. | |||||
書誌情報 |
日本水産学会誌 en : Bulletin of the Japanese Society of Scientific Fisheries 巻 74, 号 1, p. 8-13, 発行日 2008-01-15 |
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出版者 | ||||||
出版者 | 社団法人日本水産学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00215392 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00193422 | |||||
権利 | ||||||
権利情報 | 社団法人日本水産学会 | |||||
権利 | ||||||
権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 日本水産学会誌 = Bulletin of the Japanese Society of Scientific Fisheries. 2008, 74(1), p.39673 |