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Contemporary Problems of Ecology

2017 year, number 5

Dynamics of Conditionally Pathogenic Microflora of Water and Pike Perch in the Volga Delta

O. V. OBUKHOVA1, L. V. LARTSEVA2, V. V. VOLODINA3, L. M. VASILYEVA2
1Astrakhan State Technical University, 414056, Astrakhan, Tatischeva str., 16
2Astrakhan State University, 414056, Astrakhan, Tatischev str., 20a
3Caspian Research Institute of Fisheries, 414056, Astrakhan, Savushkinа str., 1
Keywords: бактерии, вода, дельта р. Волга, рыба, температура воды, сезонная динамика, факторы патогенности, bacteria, water, estuary, fish, water temperature, seasonal changes, factors of pathogenicity

Abstract

On the basis of long-term (1995-2010 and 2013-2014) microbiological monitoring of the various water areas of the Volga Delta and perch pelagic predator, four dominant groups of bacteria Enterobacteriaceae, pp. Aeromonаs, Flavo, Pseudomonаs were identified. Summarizing results of studies of species composition of microflora of water and fish from natural populations and artificial breeding are given. It was established that conditionally pathogenic microflora in the water and fish prevailed over the indicator one. The role of water temperature governing the seasonal cycles of microorganisms and pathogenicity factors that determine their fast adaptation to living in different ecological niches is shown.