Physiological and cytogenetical studies on the effect of some pesticides on some fish

This study was done in Department of Physiology, Faculty of Veterinary Medicine (Moshtohor) Zagazig University (Benha). In cooperation with Cell Biology Department, National Res. Centre, Dokki,CairoThe study aimed to clarify the effect of malathion and dimethoate on some physiological and cytogenetic processes of tilapia fish (Oreochromis niloticus), also study the residues of these pesticides and the recovery of them after 15 days.The study included four groups each group included thirty adult mature fishes.] - The first group, put in aquaria free from pesticides used as controlgroup.2- The second group was exposed to malathion in concentration0.44 mg/L for seven days.3- The third group was exposed to malathion in concentration 0.1 mg/Lfor seven days.4- The fourth group was exposed to dimethoate in concentration0.49mg/L for seven days.Techniques were used for determination of ALAT and ASAT(aminotransaminases enzymes) and examination of the electrophoresis