한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)
- 제23권3호
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- Pages.238-244
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- 1990
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
통발어구의 어획기구 및 개량에 관한 연구 3. 그물통발유에 대한 붕장어의 행동
Fishing Mechanism of Pots and their Modification 3. Behavior of Conger Eel, Astroconger myriaster, to Net Pots
- KIM Dae-An (Department of Fishing Science and Technology, National Fisheries College of Yeosu) ;
- KO Kwan-Soh (Department of Fishing Science and Technology, National Fisheries University of Pusan)
- 발행 : 1990.07.01
초록
본 실험에서는 민꽃게 대상의 그물통발들을 붕장어에 그대로 적용하여 수조실험을 행한 결과, 붕장어의 대통발 행동에 관한 다음의 몇 가지 특성을 얻었다. 1) 붕장어의 통발접촉수는 통발 투하후 급격히 증가하여 주로 30분 이내에 최대치를 보였다가 차차 감소하였고, 입롱도 통발 투하후 30분 이내에 주로 일어났으며, 입롱이 일어나면 접촉수가 증가하는 경향이 보였고, 입롱이 빨리 일어날수록 최대접촉수도 빨리 나타났다. 또한 이들 결과는 전보의 대통발
The behavior of conger eel, Astroconger myriaste(Brevoort), to the net pots with baits was investigated alternately in two experimental water tanks. One of the pots being dropped on the tank bottom, the eels increased rapidly in number of touching the pot to show a maximum whithin 30 minutes and then decreased gradually. The enterings of eels into the pots were also made mainly within 30 minutes and easier in pots with lower entrances. But the complete enterings were decided by the passage of eel tails through the pot entrances and so the eels retreated frequently after attemping to enter the pots, especially in pots small in the interval between the entrances and the baits or in pots with flappers. However, most of enterings encouraged the touches and earlier enterings ascribed earlier production of maximum touch. The eels, if entered the pots without flappers, got out of the pots relatively easily and the getting-out was easier in pots with lower entrances. On the other hand, the eels entered the pot with flappers could not get out of the pots. A comparison between the circular and square pots gave that the guidance of eels to the entrances was easier in the former and the passing of eels through the entrances in the latter, not only at the inside of pots but also at the outside. The general behavior of eels in touching or entering the net pots in the above results was almost equal to that on the bamboo and plastic pots in the previous paper.
키워드