Abstract
The paper presents monitoring of pathological changes in the microstructure of cells and tissues of fish organs living in the lower reaches of the Volga River due to the need to identify the consequences of the environmental impact of oil and gas production enterprises located in the Astrakhan region. There have been revealed the research results of studying the state of some Volga fish species in modern conditions of their habitat. A histological analysis of the organs and tissues of pike, asp and perch was carried out. In the course of studies it was found out that all fish species studied, especially pike, had encapsulated helminthic cysts in the muscles, gills and intestines. In the fish kidneys there have been found signs of nonspecific inflammatory reactions (microcirculatory disorders, alteration and proliferation of tissues) with a predominance of dystrophic and necrotic phenomena. Fatty degeneration of varying degrees of development was detected in the liver of fish; in addition, there were observed growing connective tissues and microcirculation disorders. In all organs of the fish studied, especially in the liver, hemosiderosis was found. Epithelial proliferation and goblet cell hypertrophy were detected in the gills and intestines.
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Schedule a callMore From: Vestnik of Astrakhan State Technical University. Series: Fishing industry
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