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首页> 外文期刊>ICES Journal of Marine Science >Use of selective devices in trawls to support recovery of the Kattegat cod stock: a review of experiments and experience
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Use of selective devices in trawls to support recovery of the Kattegat cod stock: a review of experiments and experience

机译：在拖网中使用选择性装置来支持Kattegat鳕鱼种群的回收：实验和经验的回顾

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摘要

The spawning-stock biomass of cod (Cadus morhua) in the Kattegat area is at a historically low level. Throughout the past decade considerable efforts have been devoted to research on improving both species and size selectivity of the trawls used in the mixed demersal fishery in the area, because this provides a valuable management tool for reducing the bycatch of cod and reducing mor-tality, and thus helping to rebuild the depleted stock. Gear research in the area has been focused on devices that allow for continued exploitation of the Norway lobster (Nephrops norvegicus) and flatfish, but minimizing the bycatch. We review the results of previous and continuing experiments with various codend mesh sizes, mesh configurations, escape windows, sorting grids, sorting frames, and separator panels, but also changes in whole-trawl designs. Based on our review, we compare and discuss the gear-related technical measures and their effectiveness in maintaining a commercial fishery on viable stocks, yet protecting cod. We discuss the results in relation to changes in legislation and experience with implementation of new selective devices in recent years. We also discuss ways to create stronger incentives for fishers to participate in gear research and to increase acceptance of more selective gears.
机译：Kattegat地区的鳕鱼（Cadus morhua）的产卵生物量处于历史低位。在过去的十年中，为改善该地区混合式深海渔业中使用的拖网的种类和尺寸选择性做出了巨大的努力，因为这为减少鳕鱼的副渔获物和降低死亡率提供了有价值的管理工具，从而帮助重建耗尽的库存。该地区的渔具研究一直集中在可以继续开采挪威龙虾（Nephrops norvegicus）和比目鱼但最小化兼捕物的设备上。我们回顾了先前和继续进行的实验结果，这些实验包括各种码域网格尺寸，网格配置，逃生窗口，排序网格，排序框架和分隔面板，以及整个拖网设计的变化。根据我们的评论，我们比较并讨论了与渔具有关的技术措施及其在维持有生存种群的商业渔业中的有效性，同时又保护了鳕鱼。我们将讨论与近年来立法变化和实施新选择性装置的经验有关的结果。我们还将讨论为渔民参与渔具研究和增加对更多选择性渔具的接受度提供更强有力的激励的方法。

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