ウイルス性出血性敗血症ウイルスに対するタケノコメバルの感受性

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タイトル別名
  • Susceptibility of Oblong Rockfish <I>Sebastes oblongus</I> to Viral Hemorrhagic Septicemia Virus
  • Susceptibility of oblong rockfish Sebastes oblongus to viral hemorrhagic septicemia virus

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Susceptibilities of the oblong rockfish Sebastes oblongus to viral hemorrhagic septicemia virus (VHSV) were examined by experimental infections via an intramuscular route with an isolate KRRV-9822 from Japanese flounder Paralichthys olivaceus. Mortalities for these fish injected with doses of 103.3, 105.3 and 107.3 TCID50/fish occurred rapidly, and took 10, 5 and 3 days to reach 90, 100 and 100%, respectively, compared with 10 days to reach 100% even for Japanese flounder injected with 107.3 TCID50/fish. The cumulative mortalities for oblong rockfish maintained at 15 and 20°C for 16 days following a viral injection of 102.8 TCID50/fish were significantly different, being 70 and 13%, respectively. When oblong rockfish, which had survived a VHSV natural outbreak, received a viral injection of 102.8 TCID50/fish, the mortality for 16 days at 15°C was 17%. In comparison, other oblong rockfish, which were previously naïve to a VHSV infection, had a 70% mortality following the same viral infection. These results revealed that the viral susceptibility of oblong rockfish is much higher than that of Japanese flounder and it depends on lower temperature. In addition, it is likely that oblong rockfish develops a protective immunity against VHSV infection.

収録刊行物

  • 水産増殖

    水産増殖 58 (4), 465-471, 2010

    日本水産増殖学会

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