Water Temperature Effect on Edwardsiella ictaluri Infection of Ayu Plecoglossus altivelis

DOI Web Site 被引用文献3件 参考文献5件
  • Nagai Takahiro
    Fisheries and Marine Technology Center, Hiroshima Prefectural Technology Research Institute
  • Nakai Toshihiro
    Graduate School of Biosphere Science, Hiroshima University

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タイトル別名
  • Water Temperature Effect on <i>Edwardsiella ictaluri</i> Infection of Ayu <i>Plecoglossus altivelis</i>

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Experimental infection of ayu Plecoglossus altivelis with Edwardsiella ictaluri PH-0744 was performed under two different water temperatures, 20°C and 28°C. The strain exhibited higher virulence at 28°C than at 20°C in intraperitoneal injection challenge, with the LD50 values being < 6.0 × 10 CFU/fish at 28°C and 7.4 × 103 CFU/fish at 20°C. In immersion challenge at a dose of 2.5 × 107 CFU/mL for 30 min, mortality of fish was 95% at 28°C and 0% at 20°C. This high virulence of E. ictaluri at 28°C may explain frequent occurrence of E. ictaluri infection of ayu at high water temperature in rivers.

収録刊行物

  • 魚病研究

    魚病研究 49 (2), 61-63, 2014

    日本魚病学会

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