Estimating Pot Mesh Selectivity for Corn Stripe Shrimp <i>Pandalus hypsinotus</i> by Water Tank Experiment

• Kozaki Kenta

  Graduate School of Fisheries Sciences, Hokkaido University

• Fujimori Yasuzumi

  Faculty of Fisheries Sciences, Hokkaido University

• Yamamoto Jun

  Field Science Center for Northern Biosphere, Hokkaido University

• Tomiyasu Makoto

  Faculty of Fisheries Sciences, Hokkaido University

• Arima Daichi

  Hokkaido Research Organization, Central Fisheries Research Institute

• Sawamura Masayuki

  Hokkaido Research Organization, Kushiro Fisheries Research Institute

• Shimizu Susumu

  Field Science Center for Northern Biosphere, Hokkaido University

Bibliographic Information

Other Title

• 水槽実験によるトヤマエビ<i>Pandalus hypsinotus</i>に対するかご漁具の網目選択性の推定
• 水槽実験によるトヤマエビPandalus hypsinotusに対するかご漁具の網目選択性の推定
• スイソウ ジッケン ニ ヨル トヤマエビ Pandalus hypsinotus ニ タイスル カゴギョグ ノ アミメ センタクセイ ノ スイテイ

Abstract

The stock level of cone stripe shrimp Pandalus hypsinotus in Funka-Bay of Hokkaido has been estimated to be medium level in recent years; however, because most of the catch is occupied by small individuals, the protection of young shrimp is still an important issue. In this study, we investigated mesh selectivity for several stretched mesh size (32, 35, 39, 43, 46, 52, 65 mm) by water tank experiment. For each experiment, 15 bred shrimps were released into experimental area which installed two netting panels as partitions. The number of shrimps that passed or not passed (retention) the panel during night was recorded, and their carapace length was measured. The retention rate of shrimp in each mesh size decreased as the mesh size expanded: 0.99 (32 mm mesh size) to 0.37 (65 mm mesh size). From the master curve of mesh selectivity, the retention rate of 20 mm carapace length (recruitment size) was estimated as 0.71 at 32 mm mesh size used in the current commercial fishery. The mesh size at which 50% retention length (L₅₀) is 20 mm was estimated to be 35.8 mm.

Journal

• Journal of Fisheries Engineering

  Journal of Fisheries Engineering 57 (3), 91-97, 2021-02-15

  The Japanese Society of Fisheries Engineering

Keywords

• cone stripe shrimp
• pot fishery
• mesh selectivity
• water tank experiment

Details

• CRID: 1390287142238237184
• NII Article ID: 130007989692
• NII Book ID: AN10278554
• DOI: 10.18903/fisheng.57.3_91
• ISSN: 21897131
• ISSN: 09167617
• NDL BIB ID: 031296694
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030937123
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031296694
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed