河川のアユに発生したEdwardsiella ictaluri感染症

DOI 日本農学文献記事索引 Web Site 被引用文献16件 参考文献43件
  • Sakai Takamitsu
    National Research Institute of Aquaculture, Fisheries Research Agency
  • Kamaishi Takashi
    National Research Institute of Aquaculture, Fisheries Research Agency
  • Sano Motohiko
    National Research Institute of Aquaculture, Fisheries Research Agency
  • Tensha Kozue
    Inland Sea Division, Yamaguchi Prefectural Fisheries Research Center
  • Arima Taeko
    Tokyo Metropolitan Islands Area Research and Development Center of Agriculture, Forestry and Fisheries
  • Iida Yoshisuke
    Fisheries and Marine Technology Center, Hiroshima Prefectural Technology Research Institute
  • Nagai Takahiro
    Fisheries and Marine Technology Center, Hiroshima Prefectural Technology Research Institute Graduate School of Biosphere Science, Hiroshima University
  • Nakai Toshihiro
    Graduate School of Biosphere Science, Hiroshima University
  • Iida Takaji
    National Research Institute of Aquaculture, Fisheries Research Agency

書誌事項

タイトル別名
  • Outbreaks of Edwardsiella ictaluri Infection in Ayu Plecoglossus altivelis in Japanese Rivers

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抄録

From middle August to early October in 2007, mortalities in wild ayu Plecoglossus altivelis occurred in the rivers of Tokyo Metropolis, Yamaguchi Prefecture and Hiroshima Prefecture, Japan. Hemorrhagic ascites was observed in almost all the examined fish. Some fish showed reddening of body surface, anus or bases of fins and exophthalmos. A single species of bacteria was isolated from the kidney, spleen and ascites of all the examined fish and identified as Edwardsiella ictaluri. Pathogenicity against ayu of the bacterial isolates was demonstrated by experimental infections, with the LD50 being approximately 104 CFU/fish. The dead fish exhibited similar disease signs to those of naturally affected fish. From these results, it was concluded that the present mortality of wild ayu was caused by E. ictaluri infection. This is the first report on E. ictaluri infection of fish in Japan.

収録刊行物

  • 魚病研究

    魚病研究 43 (4), 152-157, 2008

    日本魚病学会

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