ACTIVITY OF THE PESTICIDE SUMCIDIN ON THE COPEPODS Lernea cypranace AND Tetrahymena corlissi INFECTING OF Cyprinus carpio AND Gambusia affinis FISHES.

Abstract

The effecting of the pesticides sumcidin was tested as a control for thecopepod L. cypranacea and the protozoa parasitic T. corlissi living in the fishGambosia affinis and larva of Cyprinus carpio .The concentration used were (0.001, 0.005, 0.001, 0.1, 0.5 and 1.0) mg/Lfor (6 , 12 , 24 , 48 and 72 ) hours, the results showed that the concentration0.01 mg/L have a significant effect on the activity of the larval stages and theprotozoa parasite T. corlissi . No sign of pathological effect on the G. affinisand the larvae of C. Carpio before 24 hr. but the effect was significant after thistime. Changes was clear in liver, muscle and blood of the fish in concentrations( 0.1 , 0.5 and 1 ) mgL hence these concentrations Sumcidin as lethal for thefish and the larva stage .