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18th Global Summit on Environmental Toxicology and Pharmacology

Singapore City, singapore

Oti Egwu Emmanuel

Oti Egwu Emmanuel

Ebonyi State University, Nigeria


The impact of acute exposure of karate (Lambda cyhalothrin pyrethriod) insecticide evaluated during a 4 day exposure period at 20ppm, 40ppm, 60ppm, and 80ppm to “Heteroclarias” fingerlings showed the 96-hlC50 as 25.12ppm. The threshold value was 25.11ppm. the gills of the exposed fish analyzed showed a significant decrease in all the major cataions and ions(Na+, Cl-, Ca2+, k+, Mg2+) at (P<0.05). Although there was no total inhabitation of uptake of the cataions and anions studied, the results revealed that the uptake of these cataions and anions (Na+, Cl-, Ca2+, k+, Mg2+) increased rapidly during the 24hr period and dropped at 48hr and 72hr and gradually increased at the end of the 96th hr showing that it was time dependent during the exposure period the fish stood in upright position with their snouts above the water level gasping for air. Other behavioral characteristics of the exposed fish were peeling if skin, initial increase of opercula movement, curvature of the body, loss of balance, erratic swimming, quietness and finally death. These results therefore recommend that this insecticide (karate) should be applied appropriately at a recommended dose to avoid damage to both target and non target organisms




Abstract : Impact of Karate (Lambda Cyhalothrin Pyrethroid) Insecticide on the uptake of some major Cations and Anions in the Gills of Fresh Water Catfish “Heteroclarias” (Hybrid) Fingerlings