Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Behavioral characteristic of Japanese flying squid, Todarodes pacificus to LED light

발광다이오드 빛에 대한 살오징어의 행동 특성

  • Bae, Bong-Seong (Fisheries Resources Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Jeong, Eui-Cheol (Fisheries Resources Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Park, Hae-Hoon (Fisheries Resources Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Chang, Dae-Soo (Fisheries Resources Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Yang, Yong-Su (Fisheries Engineering Division, National Fisheries Research & Development Institute)
  • 배봉성 (국립수산과학원 동해수산연구소 어업자원과) ;
  • 정의철 (국립수산과학원 동해수산연구소 어업자원과) ;
  • 박해훈 (국립수산과학원 동해수산연구소 어업자원과) ;
  • 장대수 (국립수산과학원 동해수산연구소 어업자원과) ;
  • 양용수 (국립수산과학원 수산공학과)
  • Published : 2008.11.30
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Abstract

Squid jigging fishery is very important in that there are about 1,000 jigging vessels more than 10 tonnage and about 5,000 ones less than 10 tonnage in Korea. But the cost of oil which is used to light fishing lamps, goes significantly up to almost one hundred million won for 50 tonnage vessels and forty million won in case of vessels less than 10 tonnage. This cost has almost taken 40% of total fishing costs. That is, the fishing business condition of squid jigging fishery is recently in the very difficult situation. As oil price increases, the business condition of the fishery gets worse and worse. Therefore it is very urgent to develop an economical fishing lamp, to solve this problem of fishery's business difficulty. This research aims at developing a fishing lamp for squid jigging fishery using the light emitting diode which has very excellent efficiency and durability. We made a water tank with 20 meters width which is a shape of raceway to research behavioral characteristics of Japanese flying squid to LED light, and made an experiment to investigate optimum wave of LED light to lure squid. The method is to establish LED lamps on both ends of water tank and to observe squid's behavior. Colors and wave lengths of LED lamps, used in experiment, are red(634nm), yellow(596nm), green(523nm), blue(454nm) and white(454nm+560nm). In experiment for attractive capability of LED lamp to squids, Japanese flying squid are highly attracted to blue lamp and white lamp. However, they are dispersed to red and yellow lamps. In addition, Japanese flying squid have moved and stayed in both dark ends of water tank. When compared intermittent lamp with continuous lamp, Japanese flying squid are highly attracted to intermittent lamp when intermittent interval is 0.25 second.

Keywords

References

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