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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Effects of Depth, Season and Mesh Size on the Catch and Discards of Whiting (Merlangius merlangus euxinus) Gillnet Fishery in the Southern Black Sea, Turkey
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Effects of Depth, Season and Mesh Size on the Catch and Discards of Whiting (Merlangius merlangus euxinus) Gillnet Fishery in the Southern Black Sea, Turkey

机译：深度，季节和网眼尺寸对土耳其黑海南部垂钓（Merlangius merlangus euxinus）刺网渔业的捕获和丢弃的影响

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摘要

In this study, factors (depth, season and mesh size) influencing the catch and discards of whiting (Merlangius merlangus euxinus) gillnet fishery on the Black Sea coasts of Turkey were investigated. A total of 19 species were identified and the target species, whiting (Merlangius merlangus euxinus), dominated 87.56% of the total catch and followed by red mullet (Mullus barbatus) with 6.32%. While 82.02% of the total catch had commercial value, 17.98% was discarded. The percentage of the discarded red mullet and whiting under MLS (<13 cm) were found to be 16.03% and 13.27%, respectively. The highest discard amount was observed in winter and the lowest one in summer. The discard rate was highest in the 55-74 m depth group and the 32 mm mesh size. One-way analysis of similarity (ANOSIM) showed that there were significant differences in the discard species compositions between spring and summer, as well as 32 and 40 mm, 32 and 44 mm mesh sizes (P<0.05). These results on the discard information in gillnet fishery can contribute to the literature on ecosystem-based sustainable fisheries management by highlighting relevant results on the protection of species and ecosystem.
机译：在这项研究中，调查了影响土耳其黑海沿岸的鳕鱼（Merlangius merlangus euxinus）刺网渔业捕获和丢弃的因素（深度，季节和网眼大小）。总共鉴定出19种，白垩纪（Merlangius merlangus euxinus）的目标物种占总捕获量的87.56％，其次是红鱼（Mullus barbatus），占6.32％。虽然总捕捞量的82.02％具有商业价值，但17.98％被丢弃了。发现在MLS（<13 cm）下丢弃的红鱼和白ting的百分比分别为16.03％和13.27％。在冬天观察到最高的丢弃量，而在夏天观察到最低的丢弃量。在55-74 m深度组和32 mm筛孔尺寸中，丢弃率最高。单向相似性分析（ANOSIM）显示，春季和夏季之间的丢弃物种类组成以及32和40 mm，32和44 mm筛目大小之间存在显着差异（P <0.05）。关于刺网渔业丢弃物信息的这些结果，通过强调有关物种和生态系统保护的相关结果，可以为基于生态系统的可持续渔业管理提供文献资料。

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