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ID 25894
本文ファイル
著者
Aoki, Hideo
キーワード
nodavirus
viral nervous necrosis
VNN
sevenband grouper
Epinephelus septemfasciatus
pathogenicity
NDC
水産業
抄録(英)
Viral nervous necrosis (VNN) of sevenband grouper Epinephelus septemfasciatus at grow-out stages, which was characterized by upside down swimming or floating behavior, has been spreading in Japan. The present study describes pathogenicity of a nodavirus found in diseased sevenband grouper. When young sevenband grouper or juvenile redspotted grouper E. akaara were challenged by an intramuscular injection with the filtered homogenate of infected organs (brain and eye), abnormal swimming behavior and mortality were produced, but some affected fish recovered from the disease after exhibiting the characterized behavior. Necrosis and vacuolation of the brain and retinal tissues, characteristic to VNN, were produced in the dead and abnormally-swimming fish and the viral antigens were detected in the degenerated nerve cells by FAT with an anti-SJNNV (striped jack nervous necrosis virus) serum. The infection experiment with redspotted grouper also indicated that rearing water temperature (16-28°C) influenced development of the disease: higher mortality and earlier appearance of the disease signs were observed at higher water temperatures.
掲載誌名
魚病研究
33巻
1号
開始ページ
31
終了ページ
36
出版年月日
1998-03
出版者
日本魚病学会
ISSN
0388-788X
NCID
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
生物圏科学研究科