Microbiological State in the Volga Delta

Microbiological studies of fishing facilities and their habitats are an important part of ensuring the safety and quality of fish products. The vobla, which lives in the Volga Delta, is one of the most famous and significant commercial fish species in the region. Water and soil were taken to study the microbiocenosis of spawning grounds, and internal organs (gills, intestines, liver, muscles) were used to study the microbiological state of young roach. It was revealed that the reservoirs of spawning grounds belong to IV class in terms of water quality (“polluted” waters), which corresponds to the season and hydrothermal regime during the research period. The qualitative composition of water and soil consisted mainly of native microorganisms, some of which belonged to the conditionally pathogenic microflora. A sanitary and microbiological study of mature roach specimens showed low values of contamination of the studied samples and the absence of sanitary and indicative groups of bacteria (coliforms, Salmonella, Staphylococcus aureus, Listeria monocytogenes), which indicates a satisfactory condition of mature roach specimens according to microbiological indicators.