Effect of water quality in hematological and biochemical parameters in blood of common carp (Cyprinus carpio) in two lakes of Kosovo

Abstract

The aim of the current investigation is to evaluate the impact of water quality in hematological and biochemical blood profile in two habitats of common carp (Cyprinus carpio) captured in Batllava and in Radoniqi Lake. It has been found that Radoniqi Lake is characterized with increased levels of physicochemical parameters (T, DO, PO4-3, NO3-N, NO2-N). In Radoniqi Lake were recorded also heavy metal content such as Cd, Pb, Ni and Cu while in Batllava Lake only presence of Cu was recorded. Given the developed agriculture in the region where Radoniqi Lake is located, increased level of PO4-3, Cd and Cu can be attributed to agricultural pollution. Blood is taken for hematological (RBC, Hgb, MCV, MCH, MCHC, WBC), and biochemical (ALP, AST, ALT, Glucose, Cholesterol, Triglyceride, Total lipid, Total protein) analysis from twenty fish of each lake. The results of hematological parameters show that there is a difference between investigated fishes of respective lakes. There are slight differences in the values of Hgb, MCHC and WBC, while the changes are significant in RBC, MCV and MCH. By contrast, the biochemical parameters have shown significant differences, with the exception of the amount of cholesterol, where the differences are insignificant. Given the water quality of the two lakes, the results of this research show that water quality affects the health condition of fish. The high values of hematological and biochemical parameters in the fish of Radoniqi Lake are indicative that these fish suffer from stress caused by water pollution with heavy metals.