標識放流結果から推定した秋田沖漁場のトラフグ成魚の移動・回遊 Migration of Adult Ocellate Puffer Takifugu rubripes Caught in Waters off Akita Prefecture, Japan Sea Estimated from Tagging Experiment
To investigate the migration pattern of ocellate puffer <i>Takifugu rubripes</i> in the northern Japan Sea, seventy-two specimens of adult ocellate puffer were tagged and released on October 19, 1994 in the waters off Hachimori, Akita prefecture, Japan. Although most recoveries were reported within the Japan Sea from the east side of the Noto Peninsula to the northern tip of Honshu Island, some of them were reported from the Sanriku area that is on the Pacific side of northern Honshu Island. Major recovery was observed in spring (spawning season of the puffer) near Nanao Bay in the Noto Peninsula. There was no recapture at the area on the western side of the Noto Peninsula.<br>These results suggest that most fishes of this stock in the northern Japan Sea migrate within the Japan Sea from the Noto Peninsula to the northern tip of Honshu Island and spawn in the Nanao Bay, while some migrate to the Pacific side of northern Honshu Island. They also indicate that the stock of the puffer in the northern Japan Sea is a different stock from that in the western part of the Noto Peninsula.
日本水産学会誌 64(4), 645-649, 1998-07-15