Plasmid profiling of Flavobacterium psychrophilum isolates from ayu (Plecoglossus altivelis altivelis) and other fish species in Japan
نویسندگان
چکیده
In order to evaluate the genetic variability of the causative agent of cold water disease (CWD), plasmid profiling was used to characterize Flavobacterium (F.) psychrophilum isolates (n = 169). Size analysis of plasmids in F. psychrophilum isolates (n = 128) from several fish species demonstrated that six kinds of plasmids were harbored, and ayu isolates had different profiles compared to other isolates. Moreover, multiple isolates (n = 41) from CWD outbreaks in 2002 to 2003 at a single ayu farm were examined to determine differences between isolates from successive outbreaks and showed different profiles by the sources of seedlings.
منابع مشابه
Draft Genome Sequence of Flavobacterium psychrophilum Strain SSADA-1411, Isolated from an Ayu (Plecoglossus altivelis altivelis) Migrating Downriver To Spawn in the Shimanto River, Kochi, Japan
Here, we report the draft genome sequence and annotation of Flavobacterium psychrophilum strain SSADA-1411. This strain was isolated from the skin ulcer of an ayu (Plecoglossus altivelis altivelis) migrating downriver to spawn in the lower Shimanto River, in western Kochi Prefecture on Shikoku Island in Japan.
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Bacterial cold water disease (BCWD) in ayu (Plecoglossus altivelis altivelis) has a serious impact on aquaculture and fisheries. There is known to be a significant difference among ayu strains with regard to mortality caused by BCWD. In this study, the immune response of different ayu strains against Flavobacterium psychrophilum infection was observed. One strain was resistant to infection by F...
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Flavobacterium psychrophilum is the causative agent of bacterial cold-water disease (BCWD) and rainbow trout fry syndrome in salmonid fish. In Europe and in North and South America, F. psychrophilum usually affects salmonid hosts such as rainbow trout (Oncorhynchus mykiss) and coho salmon (Oncorhynchus kisutch). However, in Japan, ayu (Plecoglossus altivelis altivelis) are more frequently affec...
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The bacterium Flavobacterium psychrophilum is a serious problem for salmonid farming worldwide. This study investigates by multilocus sequence typing (MLST) the population structure of this pathogen in Japan where it is also a major concern for ayu, a popular game fish related to salmoniforms. A total of 34 isolates collected across the country and 80 isolates sampled in a single model river by...
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