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Effect of Codend Design and Mesh Size on the Size Selectivity and Exploitation Pattern of Three Commercial Fish in Stow Net Fishery of the Yellow Sea, China

Author

Listed:
  • Mengjie Yu

    (Fisheries College, Ocean University of China, Qingdao 266003, China)

  • Bent Herrmann

    (SINTEF Ocean, Fishing Gear Technology, Willemoesvej 2, 9850 Hirtshals, Denmark
    The Norwegian College of Fishery Science, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
    DTU Aqua, Technical University of Denmark, 9850 Hirtshals, Denmark)

  • Changdong Liu

    (Fisheries College, Ocean University of China, Qingdao 266003, China)

  • Liyou Zhang

    (Fisheries College, Ocean University of China, Qingdao 266003, China)

  • Yanli Tang

    (Fisheries College, Ocean University of China, Qingdao 266003, China)

Abstract

To address the issue of minimum mesh size regulations of the stow net fishery for croaker species, we tested and compared the size selectivity and exploitation pattern for diamond- and square-mesh codends with mesh sizes 35, 45 and 55 mm for little yellow croaker ( Larimichthys polyactis ), silver croaker ( Pennahia argentata ), and flower croaker ( Nibea albiflora ) in the Yellow Sea, China. Our results showed that the legal codend (35 mm diamond-mesh) was inadequate to protect the juvenile croaker species because more than 75% of undersized individuals were retained, and the discard ratios were as high as approximately 60%. Irrespective of mesh shape, increasing the codend mesh sizes could significantly improve the size selectivity and exploitation pattern of croaker species. Between codends with the same mesh size, the square-mesh codends had higher size selectivity than diamond-mesh codends. Based on results, the 55 mm square-mesh codend was recommended for rational exploitation of croaker stocks. This study can provide feasibility and insight for the enforcement and reform of management strategies for sustainable fishing in Chinese stow net fisheries.

Suggested Citation

  • Mengjie Yu & Bent Herrmann & Changdong Liu & Liyou Zhang & Yanli Tang, 2023. "Effect of Codend Design and Mesh Size on the Size Selectivity and Exploitation Pattern of Three Commercial Fish in Stow Net Fishery of the Yellow Sea, China," Sustainability, MDPI, vol. 15(8), pages 1-17, April.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:8:p:6583-:d:1122524
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    References listed on IDEAS

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    1. Shen, Gongming & Heino, Mikko, 2014. "An overview of marine fisheries management in China," Marine Policy, Elsevier, vol. 44(C), pages 265-272.
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