日本水産工学会誌
Online ISSN : 2189-7131
Print ISSN : 0916-7617
ISSN-L : 0916-7617
いか釣り漁業における漁灯配光の把握と最適化
髙橋 晃介阿保 純一貞安 一廣谷口 皆人平野 満隆髙山 剛山下 秀幸
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ジャーナル オープンアクセス

2016 年 52 巻 3 号 p. 209-215

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The squid jigging fisheries consume a large amount of fuel for illumination by using conventional metal halide lamps( MH), which reduce a profit due to the rise in fuel price. Light emitting diode( LED) lamps have been proposed as a way to achieve energy savings in jigging fisheries. We compared the catch performance of squid jigging vessels that use either the MH or the LED lamps. For comparison, we adjusted the number of the MH lamps to have the same irradiance of the LED. We investigated irradiance and its distribution around vessels for both the LED and the MH lamps at the port and also by a numerical simulation. Both methods showed the equivalent irradiance distribution. CPUE of operations using LED was 91% of the CPUE of operations when number of MH lamps were reduced to have a same irradiance at the sea-surface where 50 m away from the wheelhouse of the vessel. When MH lamps were reduced to have not only irradiance but also its distribution around the vessel, CPUE of using LED was 93% of CPUE using MH.

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© 2016 日本水産工学会
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