Analysis of the influence of copper on carbohydrate metabolism in carp

Abstract

The article discusses some aspects of the toxic effects of copper acetate on the body of fish. Heavy metals are highly toxic to aquatic organisms due to their ability to accumulate and transform within the biocenosis of the reservoir. The aim of the study was to study the indicators of carbohydrate metabolism in carp after exposure to various concentrations of copper acetate. The study of the features of carbohydrate metabolism, including the intensity and direction of exchange can be useful in assessing the response of fish to toxic effects. During the experiment, 4 groups of fish were formed - 1 control group (10 fish), 3 experimental groups - 10 fish each. Experimental groups of fish were contained in a solution of copper acetate (Cu(CH3COO)2) with concentrations of 0.01 mg/l, 0.1 mg/l, 1 mg/l (exceeding the MPC of copper for fisheries reservoirs by 10, 100 and 1000 times, respectively). Glucose concentration and serum amylase activity were studied. Glucose is necessary for supplying energy to various processes occurring inside the body,including reactions to toxic substances. Amylase, however, is an enzyme responsible for catalyzing the breakdown of complex carbohydrates. We found such changes in carbohydrate metabolism in carp as a significant increase in serum amylase activity by 6.63%, 7.9% and 19.57% when exposed to 10, 100 and 1000 MPC of copper, respectively, as well as a significant increase in glucose concentration by 8.54%, 20.28% and 29.7% when exposed to 10, 100 and 1000 MPC of copper, respectively, compared to the control group.