Ｐａｓｔｅｕｒｅｌｌａ　ｐｉｓｃｉｃｉｄａに起因すると考えられるウマヅラハギの大量へい死について

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タイトル別名
  • On a Massive Mortality of Oval Filefish (Navodan modestus) Caused by Pasteurella piscicida
  • Pasteurella piscicida ニ キインスル ト カンガエラレル

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説明

During the period from mid June through late July 1983, a massive mortality of oval filefishes (Navodan modestus) was found throughout the western region of the Iki channel.<BR>Visible characteristic lesions were not observed on the 14 dead fish collected for bacteriological examination, but a bacterium was isolated from the kidneys of all the fishes tested. By comparing the characteristics of the present isolates with these of the isolate from pseudotuberculosis of cultured yellowtail (Seriola quinqueradiata), the present isolates were identified as Pasteurella piscicida. Four oval filefishes which were intramuscularly injected with the representative isolate caused 100 % mortality within 48-72 h after injection. The pathogenicity of the isolate to yellowtail was confirmed by injecting with it after fish passages, but formation of white tubercles in the internal organs, known as a characteristic lesion of bacterial pseudotuberculosis of yellowtail, was not observed.<BR>In conclusion, it was confirmed that the high mortality of the wild oval filefish was caused by P.piscicida infection.

収録刊行物

  • 魚病研究

    魚病研究 19 (1), 51-55, 1984

    日本魚病学会

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