Ultrastructural Deformations Induced by 10% Ec Cypermethrin on the Scales of Cyprinus Carpio

Abstract

Chronic toxicity test under sublethal dose (0.44μg/l) was performed to study the scales of freshwater fish, Cyprinus carpio for 45 days. Scale under control group showed regular morphologywhereas the cypermethrin exposed scales were noticed with severe alterations in theirmicrostructures. Exposure of cypermethrin for 15 days revealed depletion of calcium from dorsalsurface of scale, displacement of lepidonts and curled intercirculi spaces. The level of anomalieswas increased on the 45th day of exposure which represents complete deterioration of scale withdamaged focus, uprooted lepidonts, perforation in the tubercles with broken circuli along withcomplete loss of lepidonts.