【摘 要】
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Biological properties were studied to appropriate pathogenic bacteria which were isolated from di-seased (or dead) stone flounder (Kareius bicoloratus L.) which
【机 构】
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Laboratory of Pathology and Immunology of Aquatic Animals,Department of Animal Science
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Biological properties were studied to appropriate pathogenic bacteria which were isolated from di-seased (or dead) stone flounder (Kareius bicoloratus L.) which expressed bacterial septicaemia, including morphological characteristics, colony characteristics, physiological and biochemical characteristics and serum homology of isolates, the results showed that the isolates belonged to a new subspecies of A.salmonicida. In addition, the representative strains have been re-checked and detected the mol% G+C ratio of the DNA by China Center for Type Culture Collection (CCTCC), the examined strains were also regarded as a new subspecies of A.salmonicida, and designated as Aeromonas salmonicida subsp. flounderacida subsp.nov.by its isolated fish (Kareius bicoloratus). Molecular identification of analysis of the nucleotide sequence of the 16S rRNA gene were applied, the results showed high similarity (99%) with the 16S rRNA gene of Aeromonas salmonicida from GenBank database. Cluster analysis of phylogenetic tree revealed that the representative strain formed separately bootstrap-supported cluster.
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