• Title, Summary, Keyword: 외줄낚시

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외줄낚시에 대한 대문어의 행동과 낚시형상 설계

  • 박성욱;이정우;양용수;배봉성;서두옥
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • pp.47-50
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    • 2003
  • 대문어(Parotopus dofleini)는 한국 동해안에서 외줄낚시와 통발로 어획되고 있다. 이중 대문어 외줄낚시어업은 강원도를 중심으로 3톤 내외의 소형어선 1,500여척에 의해 연간4천여톤씩 어획되고 있어 동해 북부 어업인들의 주 소득원이 되는 어업 중 하나 이다. 해상에서의 조업방법은 일출 무렵에 출항하여 낚시가 해저바닥에 닿도록 부이줄을 조정하여 50여개의 어구를 수중에 투하한 후 선상에서 육안으로 부이의 상태를 관찰한다. (중략)

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A Study on Behaviour of Giant Pacific Octopus, Parotopus dofleini to Single Line Hook for Hook Design (외줄낚시에 대한 대문어의 행동과 낚시형상 설계)

  • Park, Seong-Wook;Lee, Jeong-Woo;Yang, Yong-Su;Seo, Du-Ok
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.40 no.1
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    • pp.1-8
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    • 2004
  • The single line hook fishery for giant pacific octopus, Parotopus dofleini is one of the important in coastal Kangwon-do of Korea, where was caught an average of 4,000 ton during the period of 1996~2000. The fishing gear is consisted of a single buoy line, a buoy and a hook. In this study, the responses of giant pacific octopus to single line hook gear were examined in an experimental tank using a video camera in order to know hooking mechanism and improve hook. Giant pacific octopus tend to envelop the bait with their arms by rush or slowly swimming towards it. When they rush to the bait, they show much feeding behaviour as withdrawing after enveloping the bait using two arms. But when they approach with slowly swimming to bait, they show feeding behaviour as stopping after enveloping the bait using one arm. and then, the highly hooking rate appeared more often in the case of latter then former. The average feeding time on a sardine, giant pacific octopus and pork fat showed the range of 1 to 30 min, 10 to 50 min, and 50 min to over 1 hour, respectively. This indicates that it takes longer time for giant pacific octopus to eat the tough meat than the soft meat. The performance concerned with hooking showed that the 'B' type hook with a short shank was more favorable than the 'A' type hook with a long shank. However, the 'A' type hook has the advantage of easy dropping out caught octopus, compared to the 'B' type.

Possibility of Fishery in Offshore Wind Farms (해상풍력발전단지 내 어업 가능성에 관한 고찰)

  • Jung, Cho-Young;Hwang, Bo-Kyu;Kim, Sung-Cheol
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.25 no.5
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    • pp.535-541
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    • 2019
  • The purpose of this study was to investigate the possibility of fishery in offshore wind farms and evaluate the risk linked to the presence of turbines and submarine cables in these areas. With this objective, we studied an offshore wind farm in the Southwest Sea and the current state of vessels in the surrounding National Fishing Port. The risk assessment criteria for 22 fishing gears and methods were set by referring to the fishing boats; thereafter, the risk was assessed by experts. The fishing gears and methods that could be safely operated (i.e., associated with low risk) in the offshore wind farm were: single-line fishing, jigging, and the anchovy lift net. The risk was normal so that it is possible to operate, but the fishing gears and methods that need attention are: the set long line, drifting long line, troll line, squid rip hook, octopus pot, webfoot octopus pot, coastal fish pot, stow net on stake, winged stow net, stationary gill net, and drift gill net. Moreover, the fishing gears and methods difficult to operate in the of shore wind farm (i.e., associated with high risk) were: the dredge, beam trawl, and purse seine. Finally, those associated with very high risk and that should not be allowed in offshore wind farms were: the stow net, anchovy drag net, otter trawl, Danish seine, and bottom pair trawl.