PISCICIDAL ACTIVITY AGAINST FRESHWATER FISH IN LABORATORY AND CEMENT PLASTERING POND CONDITION

The present study assesses piscicidal activity of (i.e., acetone, diethyl ether, ethyl alcohol, chloroform, and carbon tetrachloride) latex extracts of Thevetia peruviana (Pers.) L. Schum. (Family: Apocynaceae) against Labeo rohita (Hamilton) in both conditions. Toxicity of all the organic solvent Thevetia peruviana plant was time as well as dose-dependent against freshwater fish. There was a significant (P<0.05) negative correlation between LC values and exposure periods. Thevetia peruviana plant decrease from 3.62 mgL-1 (24h) > 2.69 mgL-1 (48h) in laboratory conditions and 7.86 mgL-1 (24h) > 7.24 mgL-1 (48h) in cement plastering pond condition against fish. The same trend of toxicity was also observed in the case of other solvents i.e., diethyl ether, ethyl alcohol, chloroform, and carbon tetrachloride latex extracts of Thevetia peruviana against Labeo rohita in both conditions. Thevetia peruviana medicinal plant is used as a better cathartic, febrifuge useful in different kinds of intermittent fever while the latex of this plant is used in teeth cavities for relief from toothache.