Prevalence of Aeromonas salmonicida in the chum salmon (Oncorhynchus keta), pink salmon (O. gorbuscha), and masu salmon (O. masou) returning to rivers in Hokkaido.
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- Nomura Tetsuichi
- Hokkaido Salmon Hatchery, Fisheries Agency
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- Yoshimizu Mamoru
- Faculty of Fisheries, Hokkaido University
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- Kimura Takahisa
- Faculty of Fisheries, Hokkaido University
Bibliographic Information
- Other Title
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- サケマス増殖事業におけるせっそう病の疫学的研究 I 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
- 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
- ガイカンジョウ セイジョウ ナ サケ カラフトマス オヨビ サクラマス セイジ
- サケマス増殖事業におけるせっそう病の疫学的研究―I
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Description
Prevalence of Aeromonas salmonicida was studied in mature chum (Oncorhynchus keta), pink (O. gorbuscha), and masu salmon (O. masou) 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 103 to 105 cfu/g.
Journal
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- Fish Pathology
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Fish Pathology 26 (3), 139-147, 1991
The Japanese Society of Fish Pathology
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Details 詳細情報について
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- CRID
- 1390001206460203136
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- NII Article ID
- 130000857445
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- NII Book ID
- AN00063165
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- ISSN
- 18817335
- 0388788X
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- HANDLE
- 2115/38334
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- NDL BIB ID
- 3748918
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed