富山湾はイカリムシモドキの新北限産地：キジハタへの寄生を確認

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タイトル別名
  • Infection of Lernaeenicus ramosus (Copepoda: Pennellidae) on a Hong Kong grouper, Epinephelus akaara, in Toyama Bay, with a northward range extension of the copepod in the Sea of Japan off the Japanese archipelago

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説明

Sixteen metamorphosed females of a mesoparasitic copepodLernaeenicus ramosusKirtisinghe, 1956 were collected from a Hong Kong grouper,Epinephelus akaara(Temminck and Schlegel, 1842), at 50 m deep in Toyama Bay, an inlet of the Sea of Japan, off Hime, Noto, Ishikawa Prefecture, central Japan. The copepod is briefly described. In the Sea of Japan off the Japanese archipelago,L. ramosushas been reported only from western Japan, where the species was collected off Nagasaki, Yamaguchi, and Shimane prefectures. Toyama Bay represents a new locality record for the species, and the present collection extends its distributional range from off Shimane Prefecture northward to Toyama Bay in the Sea of Japan. There is information from fishermen engaged in grouper fishing in Toyama Bay that Hong Kong grouper with pennellid infection were caught for the first time in 2020 and heavily infected fish were frequently taken in 2021 and 2022.

収録刊行物

  • Nature of Kagoshima

    Nature of Kagoshima 49 95-99, 2022-10-23

    鹿児島県自然環境保全協会

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