Study of Effect of Lesenta Insecticide on Physiology of Common Carp Cyprinus Carpio from District Adilabad T S

Abstract

The concern for our environment is mainly owing to the increasing chemical pollution when insecticides are transported into rivers, seas and other aquatic bodies. Evidence suggests that insecticides pose potential health hazards to fish, birds, mammals and even to human beings. Modern agricultural practices result in indiscriminate use of various insecticides, which usually enter into the aquatic environment. Fish is one of our most valuable sources of protein; about 25% of the animal protein is obtained from fish. Fish are used as medicine, ground into vitamins or processed into cosmetics and perfumes, lubricants, varnishes, soaps and margarine. In the science of aquatic toxicology, fish is the only aquatic vertebrate class considered as essential model organisms in aquatic toxicology and hazards evaluation. No literature is available regarding the toxicity of Imidacloprid and Fipronil on physiological responses of fishes, because very few monitoring studies on this insecticide have been performed in aquatic environments. So, to access its impacts on fish embryo, its toxicological profile needs to be explored thoroughly. Therefore, the current study was conducted for the evaluation of acute toxicity of Lesenta (Imidacloprid and Fipronil) on respiratory, haematology, biochemical and anti-oxidant enzymes of fish Cyprinus carpio. newlineAcute toxicity testing is widely used in order to identify the dose or exposure concentration and the time associated with death of 50 percent of the fish exposed to toxic materials which is expressed as LC50 in parts per million (ppm) or milligrams per liter (mg/l). In addition, we can use the LC50 value in the classification of insecticides based on potential toxicity for fish. The major carps like the common carp Cyprlnus carpio, (Linnaeus), is economically important food fishes, having great commercial value, occuring abundantly in the fresh water tanks in and around Adilabad district. Besides their wide availability and commercial importance, these major carps are newlineAbstract newlineii newlineknown to