Histopathological Changes In The Gills And Liver, And Biochemical Changes In Blood Of Common Carp (Cyprinus Carpio L. 1758), Exposed To Insecticide (Deltamethrin)

Abstract

The study was conducted during the tenth month October 2023. Deltamethrin is a synthetic pyrethroid insecticide, used widely in farms. fields and home for prevention and treatment of harmful insects. The histopathological changesofdeltamethrineon the (liver and gills) tissues in Cyprinus carpio were determined by light microscope.These changes characterized by severe epithelial sloughing and necrosis of lamellar epithelia, rupture of secondary lamellae and epithelial lifting, lamellar epithelial hypertrophy and hyperplasia with telangiectasis of some capillaries presence ofmucinous material.Hepatic lesions in the liver tissues observed in the hepato-pancreatic tissue with multiple necrotic foci and loss of it is parenchyma, hemorrhage and blood vessels dilation, vacuolation with moderate MNCs, ductal dilation with necrotic debris and moderate accumulation of pigmented macrophages. In addition, serum glutamic pyruvic trans-aminase (GPT), glutamicoxaloacetictran-aminase (GOT) and total protein were measured and compared with control group showed an increase (p<0.05) in these parameters in exposed fish to deltamethrin, but total protein was decreased in same groups. In conclusion, Deltamethrin as toxic substance that consider as stress factor in the aquatic environment.