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The luring effect of the sardine bait for octopus pot in laboratory

실험실에서 문어 통발용 정어리 미끼의 유인 효과

  • AN, Young-il (Dept. of Maritime Police and Technology, Gangwon State University)
  • 안영일 (강원도립대학교 해양경찰과)
  • Received : 2019.06.28
  • Accepted : 2019.08.02
  • Published : 2019.08.31

Abstract

This study investigated the luring effect of the sardine bait, which is used to catch octopus with pot, as the preliminary study for the development of alternative bait for octopus pot. The soaking time for bait was divided into "5 days or less" and "11 days or longer" The number of times octopus entered the pot with bait and the empty pot was investigated under dark adaptation and light adaptation processes and the distribution of tank section was investigated under light adaptation process. The case of "11 days or longer" sardine soaking time showed higher rate of distribution in the section of pot with bait compared to the case of "5 days or less" In the case of "5 days or less" soaking time, the number of times the octopus entered the pot with bait was similar to that it entered the pot without it even during dark adaptation and light adaptation. However, in the case of "11 days or longer", the octopus entered the pot with bait more quickly than the pot without bait and more frequently during dark adaptation hours. There were cases where the octopus did not enter any pot. In the case of "5 days or less", with less decomposition of baits, the octopus entered the empty pot more during light adaptation process, and it appeared that the pot was used as a hideout.

Keywords

Octopus pot;Sardine bait;Luring effect;Soaking time;Light and dark adaptations

Acknowledgement

Supported by : (사)한국 문어 생산자협회

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