Behavioral characteristic of Japanese flying squid, Todarodes pacificus to LED light

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,

Fishing efficiency of high capacity (360W) LED fishing lamp for squid Todarodes pacificus

“…LED 등에 대한 연구는 2000년 초부터 행하여 왔는데 (Inada and Arimoto, 2007;Bae et al, 2008;An et al, 2009;Shikata T. 2010), 초기에는 LED 등의 파장에 대한 연구 (Bae et al, 2008;An et al, 2009)가 많았고, 최근에는 파 장보다 광력을 중시하고 있으나 (Bae, et al, 2011;Yamashita, et al, 2012;An and Jeong, 2012;An, 2013) 10.27-10.28 11.3-11.4 11.4-11.5 11.5-11.6 11.6-11.7 11.7-11.8 11.8-11.9 11.9-11.10 11.14-11.15 11. …”

Development of a metal-halide lamp's electronic ballast

“…는 3kW로서 집어등 2개를 점등할 수 있다 (Bae et al, 2009) (Choi, 2006;Bae et al, 2008;Choi, 2008;Bae et al, 2009;Bae et al, 2011;An et al, 2012) …”

Spectral Irradiance and Underwater Transmission Characteristics of a Combined High-Luminance Light-Emitting Diodes as the Light Source for Fishing Lamps

“…국내에서는 LED 광원의 방사 및 광학적 수형에서의 수중투과특성에 관한 검토 결과 (Choi, 2006) 및 할로겐 등과 메탈할라이드 등에 대한 LED 광원의 방사특성을 조명경제 측면에서 검토한 결과가 보고되었다 (Choi, 2008). 또한, LED 광원에 대한 오징어의 대광 행동을 수조실험을 통하여 관찰하는 (Bae et al, 2008;An et al, 2009) 한편, 채낚기 어선용 공냉식 LED 집어 시스템과 관련한 설계 및 성능 평가와 관련된 연구 결과가 보고됨으로써 (Bae et al, 2009), 국내외를 불문하고 LED 광원은 수산, 어업을 포함 한 산업분야 전반에 걸쳐 차세대의 광원으로 주목을 받고 있다.…”