HEMATOLOGICAL PARAMETERS IN NILE TILAPIA (Oreochromis niloticus) EXPOSEDn TO SUB-LETHAL CONCENTRATIONS OF CADMIUM AND ZINC

摘要

The aim of the present study was to assess the hematological alterations induced by Zn and Cd individually or in combination in Nile tilapia (Oreochromis niloticus). Fish were exposed to 0.5 and 5.0 mg/L Zn, 0.1 and 1.0 mg/L Cd, and 0.5 mg/L Zn + 0.1 mg/L Cd and 5.0 mg/L Zn + 1.0 mg/L Cd mixtures for 7 and 28 days. Significant changes in all hematological parameters were found to be either dose or time dependent. The exposure of O. niloticus to metals resulted in decreases in red blood cell, hem