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Application of Luminescent Netting in Traps to Improve the Catchability of the Snow Crab Chionoecetes opilio
Marine and Coastal Fisheries ( IF 1.7 ) Pub Date : 2019-07-29 , DOI: 10.1002/mcf2.10084
Khanh Q. Nguyen 1, 2 , Paul D. Winger 1 , Jessica Wood 1 , Meghan Donovan 1 , Odd‐Børre Humborstad 3 , Svein Løkkeborg 3 , Shannon M. Bayse 1
Affiliation  

In this study, we investigated luminescent netting as a means to improve the catch rates of snow crabs Chionoecetes opilio. A laboratory experiment was conducted to investigate the intensity and duration of luminescence using time‐lapse photography. We exposed experimental traps to five different treatments of UV light to excite the luminescent fibers in the netting. Our results showed that luminescent netting can be effectively activated to emit light, and that the resulting intensity and duration of luminescence emitted over time depends on the initial duration of UV exposure and the source of light. A fishing experiment was subsequently conducted in eastern Canada to compare the catch rate of traditional and luminescent traps, and to determine how soak time affected catch rate. Results indicate that the effect of luminescent traps on the CPUE (measured as number of crab per trap) depended on the soak time. The CPUE was significantly higher (a 55% increase) in luminescent traps that underwent relatively short soak times (~1 d), but when soak times were longer (~8 d), the CPUE was not significantly different.

中文翻译:

夜光网在诱捕器中的应用,以提高雪蟹毛鳞鱼的捕获能力

在这项研究中,我们调查了发光网,以提高雪蟹Chionoecetes opilio的捕获率。。进行了实验室实验,以使用延时摄影研究发光的强度和持续时间。我们将实验陷阱暴露于五种不同的紫外线处理下,以激发网中的发光纤维。我们的结果表明,发光网可以被有效地激活以发光,并且随着时间的推移所产生的发光强度和持续时间取决于紫外线暴露的初始持续时间和光源。随后在加拿大东部进行了一次钓鱼实验,以比较传统诱捕器和夜光诱捕器的捕获率,并确定浸泡时间如何影响捕获率。结果表明,发光陷阱对CPUE的影响(以每个陷阱中的螃蟹数量衡量)取决于浸泡时间。
更新日期:2019-07-29
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