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The aim was to determine if the bacteria Aeromonas salmonicida was the cause of the disease furunculosis, in Californian trout (Oncorhynchus mykiss, Walbaum 1792), as well as certain biochemical activities of the isolated strains. Ten strains of the species A. salmonicida were isolated from samples taken from changed skin areas on fish raised in fisheries and all were immobile. The strains grow at a temperature of 22-23°C and colonies of them formed a brown pigment between the third and fifth days. The biochemical activities of the isolated strains were identical to the activities of the standard strain of A. salmonicida, which served as a control. In tendency of determination the presence of this bacteria in trout it has been done the rapid agglutination with the “O” antiserum against A. salmonicida which was a positive reaction. The isolated strains, multiplied in bactro-tryptose nutrient, produced a toxin that cause a cytopathogenic effect on pig kidney cell culture.

the internet journal of microbiology

&lt;italic&gt;Aeromonas Salmonicida&lt;/italic&gt; In Californian Trout (Oncorhynchus Mykiss, Walbaum, 1792 ) And Some Biochemical Characteristics Of This Bacteria