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外観上正常なサケ,カラフトマス及びサクラマス成熟親魚の Aeromonas salmonicida 保有状況

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Title: 外観上正常なサケ,カラフトマス及びサクラマス成熟親魚の Aeromonas salmonicida 保有状況
Other Titles: Prevalence of Aeromonas salmonicida in the chum salmon (Oncorhynchus keta), pink salmon (O. gorbuscha), and masu salmon (O. masou) returning to rivers in Hokkaido
Authors: 野村, 哲一1 Browse this author
吉水, 守2 Browse this author →KAKEN DB
木村, 喬久3 Browse this author →KAKEN DB
Authors(alt): Nomura, Tetsuichi1
Yoshimizu, Mamoru2
Kimura, Takahisa3
Issue Date: Sep-1991
Publisher: 日本魚病学会
Journal Title: 魚病研究
Journal Title(alt): Fish pathology
Volume: 26
Issue: 3
Start Page: 139
End Page: 147
Abstract: Prevalence of Aeromonas salmonicida was studied in mature chum (Oncorhynchus keta), pink (O. gorbuscha), and masu salmon (O. musou) without signs of furunculosis. From September 1979 to November 1990, a total of 15,264 chum, pink and masu salmon were collected from 33 rivers. We isolated A. salmonicida from chum salmon in 18 of 28 rivers and the prevalence ranged from 1.8 to 34.4%. For pink salmon populations, A. salmonicida was isolated in 9 of 14 rivers with prevalence ranging from 1.7 to 14.6%. In masu salmon, A . salmonicida was isolated in 6 of 10 rivers and the prevalence ranged from 0.5 to 3.7%. The above results indicated that A. salmonicida distributed widely in the populations of mature salmonids, except those in the rivers on the coast from Tsugaru Strait to Uchiura Bay. The annual change in prevalence of A. salmonicida in salmon was closely related to the fish density in the holding ponds for maturation. The viable numbers of A. salmonicida in the kidney were found to be from 10^3 to 10^5 cfu/g.
Type: article
URI: http://hdl.handle.net/2115/38334
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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