桁曳網試験操業によるヤナギムシガレイの網目選択性

• 山崎 淳

• 大木 繁

• 飯塚 覚

書誌事項

タイトル別名

• Mesh Selectivity for Willowy Flounder Tanakius kitaharai Determined by a Beam Trawl Fishing Experiment.
• ケタ ヒキアミ シケン ソウギョウ ニ ヨル ヤナギムシガレイ ノ アミメ センタクセイ

抄録

This paper presents the mesh selectivity for willowy flounder Tanakius kitaharai using a beam trawl net with experimental bags of three different mesh opening : 35.8mm, 42.9mm and 49.4mm. Forty seven hauls of beam trawl towing were carried out in the area between 100 and 180m in depth off Kyoto Prefecture from August 1999 to August 2000. The parameters of logistic and Richards equations for mesh selectivity curves in each mesh opening were estimated by the maximum likelihood method. The Richards equation model was selected as the betterfit model because it had a smaller value of AIC than the logistic equation model. The values of 50% selection length of 35.8mm, 42.9mm and 49.4mm sizes were estimated to be 97.0mm, 112.4mm and 129.6mm, respectively. On the other hand, many juveniles of willowy flounder were clearly caught by commercial fishery with codend of 20.9mm mesh opening. This paper also discusses the effectiveness of mesh enlargement for protecting juvenile flounders based on mesh selectivity estimated in this study.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 67 (6), 1082-1088, 2001

  公益社団法人 日本水産学会

キーワード

• 網目選択性
• 最尤推定
• 資源管理
• ヤナギムシガレイ

詳細情報

• CRID: 1390282681387885568
• NII論文ID: 110003145404
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.67.1082
• ISSN: 1349998X
• ISSN: 00215392
• ISSN: http://id.crossref.org/issn/00215392
• NDL書誌ID: 5984172
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010641186
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5984172
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/11075873
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可