Microbiological monitoring of causative agents of infectious diseases of salmons in the Northwest region

Abstract

Abstract In article results of microbiological monitoring of aquatic organisms of different species in the territory of the northwest region of the Russian Federation are provided. During the period from January, 2016 to December, 2018 it was subjected to a research of 13 439 samples of salmons. As a result of bacterial researches it is allocated 235 etiologically significant strains of microorganisms. By microbiological plating gram-negative microflora such as yersiniya, mixobacteria, pseudomonas is most often detected, it has high sensitivity to cephalosporins, fluoroquinolones, chloramphenicol and it is resistant to furasolidone, piperacillin, kanamycin, amikacin, aztreonam. In a mariculture at mass death from internals and gill apparatus of fishes allocated microorganisms of Flexibacter branchiophila (Flavobacterium branchiophilum) with the accompanying coccal microflora. For the first time in the country the allocation case in an aquaculture of gram-pozitive bacteria of Renibacterium salmoninarum is described and it’s antibiotic resistanse is studied.