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- W14953158 abstract "A survey on the fishing gear for octopus drift-line fishing was done in Gangwon-do, Sacheon, Gyeongnam and Hokkaido, Japan, while a survey on the environments of fishing grounds used data from January to August from the Korea east coast farming forecast system of Donghae Fisheries Research and Development Institute. The present situation of fishing was examined with boats engaging in drift-line fishing from March to August in the coastal waters along Gangneung. The fishing tackle for octopus drift-line fishing was made manually, and the size, shape, and weight of the hook and number of shooting used vary according to the fishing time and region. Lead is used as the material for sinkers. As bait, pork fat with skin is mostly used in Gangwon-do. The temperature of the bottom water layer in the coastal fishing ground of Gangneung from April to June ranges from <TEX>$3.2-12.4^{circ}C$</TEX>, which is the optimal temperature for octopuses. During July and August, the temperature ranges from <TEX>$5.0-20.6^{circ}C$</TEX>. The maximum difference between day and night temperatures reached up to <TEX>$9.2^{circ}C$</TEX>. Salinity is generally stable at <TEX>$33.2-35.324.6%_{circ}$</TEX>, which does not affect the inhabitation of octopuses. The octopus catch reached its peak from May to July, while most octopuses weighed less than 1 kg (76.7%). The results show that it is effective to carry out octopus drift-line fishing up to a depth of 40 meters; and that the maximum number of octopuses per line is obtained with an operation time of six hours." @default.
- W14953158 created "2016-06-24" @default.
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- W14953158 date "2006-05-31" @default.
- W14953158 modified "2023-10-16" @default.
- W14953158 title "Octopus fisheries in the coastal waters of Gangneung- II - Octopus drift-line fishery -" @default.
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- W14953158 doi "https://doi.org/10.3796/ksft.2006.42.2.078" @default.
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