Behavioral Change and Histological Effects of Xenobiotics Exposure in Aquatic Organism

¹ Department of Ecology, College of Science, University of Kufa, Najaf, Iraq
² Faculty of medical sciences, Jabir ibn Hayyan University for medical and pharmaceutical sciences, Najaf, Iraq

^* Corresponding author: ahedm.abdulridha@uokufa.edu.iq

Abstract

The present study investigates the adverse effects of exposure to the organic toxicant diazinon pesticide on aquatic organisms, and its potential effects on some behavioral and histological parameters organism tissue. One aquatic organism was selected to estimate diazinon toxicity in Cyprinus carpio fish. The LC50 96 - hours to diazinon was estimated for C. carpio (total n= 72) They were exposed to a range of different Concentrations related to diazinon (60% EC) (0, 6, 10, and 15 mg/L). The LC50 The period was 96 hours when she was found 9.5 mg /L. The fish are exposed to 25% of the LC50 ( 2.37 mg/L). behavioral effect estimated by monitoring experiment each test container was observed for (5-10) minutes, after ending 28 days, histopathology, effect was estimated. The behavioral results in this study were observed in fish (damage caudal fin, hyperactivity to hypoactive, change in skin pigmentation, sinking to the bottom, fish scales falling), when exposed to diazinon. while the histological changes of the fish, we notice a slight change in the tissues, necrosis in some areas, and damage to the intersections that preserve the general histological structure of the muscles as well as the submucosal layer of the largest size when compared to the control group.