Open AccessSANITARY AND ECOLOGICAL IMPORTANCE OF BACTERIA OF THE GENUS ACINETOBACTER ISOLATED FROM WATER AND FISH IN VOLGA DELTA
Author(s) -
Olga Valentinovna Obukhova,
Lyubov Vladimirovna Lartseva
Publication year - 2021
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2073-5529-2021-2-29-40
Subject(s) - biology , gill , sturgeon , biota , zoology , bacteria , vibrio , catalase , diversity of fish , microbiology and biotechnology , ecology , fishery , fish <actinopterygii> , biochemistry , genetics , antioxidant
The article highlights the study of the sanitary and ecological features of acinetobac-teria,which were isolated from the water and fish in the Volga Delta in the period from 1987 up to 2010. Today, these bacteria are among the most dangerous pathogens for people, especially in hospitals. They can exist in hydroecosystems and interact with aquatic biota. There were analyzed 96 beluga species; 295 sturgeon species; 217 stellate sturgeon species; 50 sterlet species; 173 carp species; 447 zander species; 638 water samples in the fishing areas. There were examined the fish, parenchymal organs, intestines, gills, blood, gonads (in sturgeon), and muscle tissues. Pathogenicity factors were taken into account: growth at 37°C, fermentation of hemolysin, protease, lecithinase, catalase; viability in 3.0; 7.0; 10.0% broth with NaCl. It is shown that the occurrence of Acinetobacter in water ranged from 3.0 to 16.7%; in fish-from 4.6 to 10.5% of samples of the entire isolated microflora. Inferior to the dominant enterobacteria and aeromonads, acinetobacteria isolated from water and fish had all the analyzed pathogenicity factors, especially catalase activity. In combination with halophilicity, these bacteria can be preserved in fish when stored frozen and as salted fish products.