STUDIES ON THE FISHERIES WITH LUREING LIGHTS-II:STUDY ON THE POLE AND LINE FISHERY FOR MACKEREL

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概要

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• The mackerel angling (with pole and line) fishery has been operating at night with lureing lamps in the off-shore of around of Japan. For the investigation, the following five fishing grounds were selected, surrounding of Saishu Island, off-shore of Senzaki, Tsugaru Channel, East China Sea, and southern sea of Kyushu (Satsunan Sea area). In this studies, the difference of catches among these five fishing-grounds was discussed through two points of view of light intensity of lureing lamps and echo of fish-finder from shoals. Consequently, it was found that the adaptability of light intensity to catch mackerel was changed by fishing-ground, the most powerfur light was neccessary in the East China Sea and other fishing-grounds were arranged in order of light intensity as follow; Saishu Island, Southern Sea of Kyushu, Senzaki and Tsugaru fishing ground and this order was given in propotion to depth of swimming layer of shoals in each fishing-ground and the degrees of sea transparency. It was also found that the use of fish-finder had brought about a remarkable effect on catches.

• 社団法人 日本水産学会の論文

著者

• 今村 豊

  東京水産大学

関連論文

• 1. 火光利用の漁業について(綜合報告)
• 振縄(桂縄)の駆集効果に就いて
• STUDIES ON THE FISHERIES OPERATING WITH AID OF LURING LIGHT-IV:STUDY ON THE FISHERY OPERATING THE STICK HELD DIP NET WITH AID OF LURING LIGHT FOR SAURY.
• STUDIES ON THE FISHERIES WITH LUREING LIGHTS-II:STUDY ON THE POLE AND LINE FISHERY FOR MACKEREL
• STUDIES ON THE FISHERIES WITH LUREING LIGHTS-III:STUDIES ON THE ANGLING FOR MACKEREL, SEA BREAM AND GRUNT
• STUDIES ON THE FISHRIES OPERATING WITH THE LURING LIGHTS-I:STUDY ON THE FISHERY OF TAKIIREAMI IN TANABE BAY

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