Existence of non-agglutinating Aeromonas salmonicida subsp. salmonicida in strains isolated from salmonids in Yamagata prefecture, Japan
1994
Nomura, T. (Hokkaido Salmon Hatchery, Sapporo (Japan)) | Yoshimizu, M. | Moki, S. | Ezura, Y.
Auto-agglutination, protein staining of colonies and protein pattern of A-layer in thirty three isolates of Aeromonas salmonicida from salmonids in various parts of Yamagata prefecture and Hokkaido were studied. The strains isolated in Yamagata prefecture did not showed auto-agglutination in broth, colony colour was mainly grey-white on TSA-C and NA-C medium, and there was no 50kDa. major protein band in the A-layer with SDS-PAGE. It was revealed from the results that non-agglutinating a. salmonicida exist in the strains isolated in Yamagata prefecture. While t here were no strains isolated in Hokkaido which were non-agglutinating. We suspect that the reason for the existence of non-agglutinating strains in Yamagata prefecture may depend on the temperature at which this bacterium was isolated
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