Chemical composition, indicators of fish quality and elements concentration in muscles as indicators of Pelecus cultratus health
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This study investigates physiological parameters of sabrefish from the Ivankovo and Uglich reservoirs of the Volga-Caspian basin, chemical composition of its muscle tissues as well as concentrations of major and trace elements in the muscles. We also evaluate potential human health risks associated with the consumption of sabrefish meat. According to various assessments, the Ivankovo and Uglich reservoirs are classified as “polluted” and “very polluted,” though the Uglich Reservoir is characterized by a lower level of pollution. In sabrefish from the Uglich Reservoir, the values of condition factor and hepatosomatic index are significantly higher, and gonadosomatic index is lower. The muscles of sabrefish from the Ivankovo Reservoir have a higher content of dry matter, protein, lipids, as well as Cd, Pb, Cr, Zn, Mn, Fe, and Mg. The synchronicity of bioaccumulation of Cd, Pb, Al, Cr, Ni, Cu, Mn, and Fe is shown, depending on the concentration of these elements in the water of both reservoirs. There is no potential non-carcinogenic risk to human health from heavy metals in the sabrefish samples under investigation. A number of patterns in the accumulation of metals in the muscles of sabrefish subjected to different levels of anthropogenic pressure indicate that the dynamics of their concentrations can be used to monitor pollution of the aquatic environment.
Abstract
This study investigates physiological parameters of sabrefish from the Ivankovo and Uglich reservoirs of the Volga-Caspian basin, chemical composition of its muscle tissues as well as concentrations of major and trace elements in the muscles. We also evaluate potential human health risks associated with the consumption of sabrefish meat. According to various assessments, the Ivankovo and Uglich reservoirs are classified as “polluted” and “very polluted,” though the Uglich Reservoir is characterized by a lower level of pollution. In sabrefish from the Uglich Reservoir, the values of condition factor and hepatosomatic index are significantly higher, and gonadosomatic index is lower. The muscles of sabrefish from the Ivankovo Reservoir have a higher content of dry matter, protein, lipids, as well as Cd, Pb, Cr, Zn, Mn, Fe, and Mg. The synchronicity of bioaccumulation of Cd, Pb, Al, Cr, Ni, Cu, Mn, and Fe is shown, depending on the concentration of these elements in the water of both reservoirs. There is no potential non-carcinogenic risk to human health from heavy metals in the sabrefish samples under investigation. A number of patterns in the accumulation of metals in the muscles of sabrefish subjected to different levels of anthropogenic pressure indicate that the dynamics of their concentrations can be used to monitor pollution of the aquatic environment.