Bacteria of genus Bacillus as antagonists of pathogens in aquaculture

Due to the increasing resistance of aquaculture pathogens antibiotics, search for new approaches control infectious diseases is particular importance. A promising approach development probiotic preparations based on antagonist bacteria. The paper studied antagonistic activity Bacillus strains that are developing probiotics fish. were isolated from bottom sediments Don River in area Donskoy Fish Reserve, as well intestines cyprinids natural populations, namely, silver carp (Cyprinus gibelio), roach (Rutilus heckelii), and bream (Abramis brama). inhibitory effect against causative agents aeromonosis, pseudomonosis bacterial hemorrhagic septicemia was by method delayed antagonism. Aeromonas Pseudomonas species pathogenic fish sturgeons, salmons grown pond farms recirculating systems Krasnodar Region, Rostov Region Republic Adygea. It has been shown sensitivity action bacilli not only a species, but also strain-specific trait among Five identified exhibited maximum pathogens, their identification carried out molecular biological mass spectrometric methods. established most pronounced antagonism sediments. growth all suppressed B. subtilis R4 strain. Thus, aerobic spore-forming bacteria suitable creation objects have characterized.