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特異抗体を指標にしたサクラマス増養殖における Renibacterium salmoninarum 感染環の推定

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Title: 特異抗体を指標にしたサクラマス増養殖における Renibacterium salmoninarum 感染環の推定
Other Titles: Infection-cycles of Renibacterium salmoninarum in Hatcheries of Masu Salmon Oncorhynchus masou by Monitoring Specific Antibodies
Authors: 奥田, 律子1 Browse this author
西澤, 豊彦2 Browse this author →KAKEN DB
吉水, 守3 Browse this author →KAKEN DB
Authors(alt): Okuda, Ritsuko1
Nishizawa, Toyohiko2
Yoshimizu, Mamoru3
Keywords: Renibacterium salmoninarum
Oncorhynchus masou
bacterial kidney disease
antibody detection
Issue Date: Dec-2006
Publisher: 日本魚病学会
Journal Title: 魚病研究
Journal Title(alt): Fish Pathology
Volume: 41
Issue: 4
Start Page: 175
End Page: 178
Publisher DOI: 10.3147/jsfp.41.175
Abstract: BKD発生歴のある孵化場の健常サクラマス幼魚の50%以上が抗R.s.抗体を保有し, その一部からIFATでR.s.が検出された。一方, BKD発生歴の無い孵化場の幼魚は, 全て抗R.s.抗体陰性であった。また, 河川遡上した親魚から抗R.s.抗体は検出されなかったが, BKD発生歴のある孵化場で2ヶ月間催熟蓄養した親魚の抗R.s.抗体陽性率は33%で, その一部からR.s.が検出された。従って, BKD発生歴のある孵化場内でのR.s.感染環に幼魚と親魚間の水平感染が関与していると考えられる。
Detection of antibodies against Renibacterium salmoninarum (R.s.), a causative agent of bacterial kidney disease (BKD), was conducted among apparently healthy fingerlings and broodstock of masu salmon Oncorhynchus masou. Antibodies against R.s. were detected from ≧ 50% of fingerlings in the hatcheries with BKD-histories and R.s. antigens were detected in some of antibody-positive fish, but not from those in the hatchery without a BKD-history. Although returning broodstock examined within two weeks after introduced into the hatchery showed all negative for anti-R.s. antibodies, 33% of those in the hatchery with BKD-histories became positive after two months of rearing for sexually maturation. Monitoring specific antibodies suggests that R.s. infection-cycle is completed between fingerlings and broodstock in hatcheries having BKD-histories.
Type: article
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉水 守

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