TOXICOLOGICAL EFFECTS OF "DIQUAT" ON CLARAIS LAZEKA AND TILAPIA NILOTICA - EGYPTIAN NILE FISH

Document Type : Research article

Authors

Dept. of Forensic Medicine & Toxicology, Faculty of Vet. Med. Cairo University,

Abstract

Exp < /strong>eriments were carried out to investigate the toxic effects of the aquatic herbicide "Diquat" on two of most familiar Egyptian Nile fish Clarias lazera and Tilapia nilo tica. The Len of diquat on Tilapia nilotica was 200 (166-250) ppm. Short-term toxicity studies were carried out on both types of fish by daily inocula ting 1/10 LC dose for five weeks. Symptoms, post-mortem and Histopathological changes were observed. Our investigation revealed a significant decrease in RBCS. WBCs. count and Hb concentration during short term toxicity study.