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Baiting gill nets - how is fish behaviour affected?

机译：诱饵刺网-鱼的行为如何受到影响？

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摘要

Movements of acoustically tagged cod were tracked in a fjord in northern Norway using a stationary telemetric positioning system. Having observed the basic movement patterns under the prevailing natural conditions, an experimental fleet of gill nets having baited and non-baited nets was introduced. The nets were fished for 12 nights and swimming behaviour of the tagged fish towards the baited and non-baited nets compared. Baiting resulted in increased number of encounters with the gear, but this did not significantly increase catch rates. The majority of fish swam slower in the vicinity of baited as compared to non-baited nets, but did not stay for a longer time at baited than at non-baited nets following an encounter. The mesh size and texture of the bait bags may be crucial for releasing strong responses leading to netting.
机译：使用固定遥测定位系统在挪威北部的一个峡湾中追踪了带有声学标签的鳕鱼的运动。在观察了当时盛行的自然条件下的基本运动方式之后，我们引入了一个有诱饵网和无诱饵网的实验性刺网。将网捕捞12晚，比较带标签的鱼朝诱饵网和非诱饵网的游泳行为。诱饵导致与装备的接触次数增加，但这并没有显着提高捕获率。与无饵网相比，大多数鱼在有饵网附近的游泳速度较慢，但​​是在遭遇鱼网后，在有饵网中的停留时间不会比无饵网更长。诱饵袋的网眼尺寸和质地对于释放强烈的反应导致结网可能至关重要。

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