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The effect of LED lights on trap catches in Finnish inland fisheries
Fisheries Management and Ecology ( IF 2 ) Pub Date : 2021-05-04 , DOI: 10.1111/fme.12482
Timo J. Ruokonen 1 , Tapio Keskinen 1 , Mikael Luoma 2 , Ari Leskelä 3, 4 , Petri Suuronen 3
Affiliation  

Trap fisheries can provide catches of high quality, and unwanted bycatch can be released with high survival. Light attraction could be an effective way of increasing trap catches, but research results are largely lacking. Experiments to test the effect of LED lights in trap‐net fishing were conducted in two Finnish lakes where fishing targeted Eurasian perch Perca fluviatilis L. and roach Rutilus rutilus (L.). LED lights (white, green, red, blue and combinations) were attached inside the traps. The use of LED lights did not increase fish CPUE. Contrary to expectation, Eurasian perch catches were higher in traps without LED lights. Significant variation in CPUEs was observed, but without interaction with light treatments. The LED lights tested in this study do not increase the effectiveness of trap fishery targeting Eurasian perch and roach in Finnish lakes in the ice‐free season.

中文翻译:

LED灯对芬兰内陆渔业陷阱捕获的影响

捕捞渔业可以提供高质量的渔获,不需要的副渔获物可以高存活率释放。吸引光可能是增加陷阱捕获量的有效方法,但目前仍缺乏研究结果。在两个芬兰湖泊中进行了测试LED灯在陷阱网捕鱼中的效果的实验,其中两个捕鱼针对的对象是欧亚鲈鱼Perca fluviatilis L.和蟑螂Rutilus rutilus(L.)。陷阱内部装有LED灯(白色,绿色,红色,蓝色及其组合)。使用LED灯并没有增加鱼的CPUE。与预期相反,没有LED灯的陷阱中的欧亚鲈鱼捕获量更高。观察到CPUE的显着变化,但未与光处理发生交互作用。在本研究中测试的LED灯在无冰季节并未提高针对芬兰湖中欧亚鲈鱼和蟑螂的诱捕渔业的效率。
更新日期:2021-05-07
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