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Oncorhynchus Masou Virus (OMV) Epidemiology and its Control Strategy

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Title: Oncorhynchus Masou Virus (OMV) Epidemiology and its Control Strategy
Authors: Yoshimizu, Mamoru Browse this author →KAKEN DB
Nomura, Tetsuichi Browse this author
Keywords: Oncorhynchus masou virus
salmonid fish
salmonid herpesvirus
Issue Date: Mar-2001
Publisher: 水産庁養殖研究所
Journal Title: 養殖研究所研究報告
Journal Title(alt): Bulletin of National Research Institute of Aquaculture
Volume: Suppl. 5
Start Page: 11
End Page: 14
Abstract: Distribution of salmonid herpesvirus was known in USA and Japan. Herpesviruses isolated in USA were classified to serotype 1 (SaHV-1) and in Japan were serotype 2 (SaHV-2). The reference strain of SaHV-1 is Herpesvirus salmonis and SaHV-2 is Oncorhynchus masou virus (OMV) strain OO-7812. OMV disease (OMVD) causes oncogenic and skin ulcer conditions. The main susceptible fish species are kokanee salmon (Oncorhynchus nerka), masu salmon (O. masou), coho salmon (O. kisutch) and rainbow trout (O. mykiss). Economic losses caused by this virus were recognized among kokanee salmon, coho salmon and rainbow trout. At the beginning of the 1980s, OMV was distributed widely in the northern part of Japan. Since 1988, OMV was isolated from coho salmon and since 1991 this virus was found in rainbow trout. Recently, re-appearing OMVD has become a major problem in pond culture of rainbow trout in the central part of Japan. OMV is sensitive to ultraviolet irradiation and iodophore treatment. Although detection of OMV in carrier fish is difficult using polymerase chain reaction (PCR) and OMV replicates and appears in ovarian fluid at mature stage, it can be controlled by disinfection. OMVD was successfully controlled by disinfection of all facilities and eggs with iodophore just after fertilization and again at early-eyed stage.
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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