日本海沿岸域におけるブリ成魚漁獲量の年変動について

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  • Studies on yearly fluctuations of yellowtail catch in the coastal area of Japan. II. Yearly fluctuations of yellowtail catch in set net fishery along the coastal area of the sea of Japan.
  • 日本近海におけるブリ漁況に関する研究　ＩＩ　日本海沿岸域におけるブリ成魚漁獲量の年変動について
  • ニホンカイ エンガンイキ ニ オケル ブリ セイギョ ギョカクリョウ ノ ネン

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This paper examines mechanisms of yearly fluctuations in catch of adult yellowtail by set net fishery along the costal area of the Sea of Japan. The author studies relations between changes in position of the cold-water off the coast and fishing condition of adult yellowtail along the coast, using the hydrographic data from monthly observation in the Sea of Japan.<br> In spring, abundant catch of adult yellowtail tends to occur along the coast of Yamaguchi Pref. when the position of the Shimane cold-water deflects off the coast. In winter, on the con-trary, abundant catch tends to occur when the position of the Shimane cold-water deflects on the coast. In winter, abundant catch also tends to appear along the coast of the western part of Waka-sa Bay when the position of the Wakasa cold-water deflects on the coast.<br> In spring and early summer, fewer adult yellowtail migrate to the north of Noto Pen. when the cold-water deflects on Noto Pen.

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