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首页> 外文期刊>ICES Journal of Marine Science >Selective flatfish seine: a knee-high demersal seine barely catches cod
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Selective flatfish seine: a knee-high demersal seine barely catches cod

机译：选择性比目鱼围网：膝盖高的深海围网几乎无法捕获鳕鱼

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摘要

Norwegian coastal cod (Gadus morhua) protection restricts the use of active fishing gears. Demersal seines, acknowledged as being efficient for targeting flatfish, are therefore largely excluded from the fjords. To exploit plaice (Pleuronectes platessa), a species-selective gear that avoids catching cod is needed. We therefore designed a low-rise demersal seine with a 0.6m vertical opening and tested it on fishing grounds in Lofoten (Northern Norway), comparing it with a conventional seine that had a vertical opening of similar to 3.5m, and fished both during the day and at night. Six to nine hauls were taken with each of the four gear/time-of-day categories (32 hauls in total). The low-rise seine caught no fewer plaice during day-time fishing, but less at night. Cod and haddock (Melanogrammus aeglefinus) catches were reduced by 94% and 98%, respectively, while catches of sole (Solea solea) increased with the low-rise seine. No catch differences were found for halibut (Hippoglossus hippoglossus), common dab (Limanda limanda), or monkfish (Lophius piscatorius). The low-rise seine therefore enables targeting flatfish while avoiding gadoid catches, although loss of plaice during night-time fishing is to be expected.
机译：挪威沿海鳕鱼（Gadus morhua）的保护措施限制使用主动式渔具。因此，被认为能有效地针对比目鱼的深海围网被排除在峡湾之外。为了开发（Pleuronectes platesa），需要一种能够避免捕获鳕鱼的物种选择性装备。因此，我们设计了一个垂直开口为0.6m的低层深水围网，并在罗弗敦（挪威北部）的渔场上对其进行了测试，并将其与垂直开口约3.5m的常规围网进行了比较，并在白天和晚上。四个档次/每日时间类别分别进行了六到九次运输（总共32次运输）。低层围网在白天钓鱼时捕获的虫数量不多，而在夜间则较少。鳕鱼和黑线鳕（Melanogrammus aeglefinus）的渔获量分别减少了94％和98％，而低层围网捕捞的唯一（Solea solea）渔获量却增加了。没有发现大比目鱼（Hippoglossus hippoglossus），普通民建联（Limanda limanda）或和尚鱼（Lophius piscatorius）的渔获量差异。因此，尽管预计在夜间捕鱼时会失去，但低矮的围网因此可以瞄准比目鱼，同时避免捕捞过短的鱼。

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