天然アコヤガイを用いたアコヤガイ赤変病の病勢調査

DOI 日本農学文献記事索引 Web Site 被引用文献3件 参考文献24件

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タイトル別名
  • An Epidemiological Study of the Akoya Oyster Disease Using Naieve Japanese Pearl Oysters
  • テンネン アコヤガイ オ モチイタ アコヤガイ セキ ヘンビョウ ノ ビョウセイ チョウサ
  • An Epidemiological Study of the Akoya Oyster Disease Using Naïve Japanese Pearl Oysters

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We evaluated the prevalence of the akoya oyster disease (AOD) in Japan and the pathogenicity of the unidentified causative agent. We obtained naïve Japanese pearl oysters Pinctada fucata martensii from a site with no history of AOD. In separate experiments, the oysters were either challenged by intramuscular injection with the hemolymph of infected oysters or reared in several major pearl oyster farms throughout Japan. Both groups of oysters experienced high mortality and exhibited discoloration of the adductor muscle and histopathological changes characterizing AOD. Our data suggest that AOD is prevalent in pearl oyster culture fields throughout Japan and that the causative pathogen remains highly pathogenic to P. fucata martensii. When groups of oysters produced by repeated selective breeding against AOD were reared in different pearl oyster fields alongside uninfected naïve oysters, the selectively bred oysters had significantly lower mortality than naïve oysters. The recent decline in outbreaks of AOD can be attributed, in part, to the introduction of selectively bred oysters that are resistant to this disease.

収録刊行物

  • 魚病研究

    魚病研究 46 (4), 101-107, 2011

    日本魚病学会

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