Toxic effect of Euphorbia hirta plant to fingerlings of Labeo rohita (Hamilton) in different culturing conditions.

Abstract

The piscicidal activity of aqueous and acetone latex extracts of Euphorbia pulcherima plant which is belong to Family: Euphorbiaceae against fingerlings of Labeo rohita (Hamliton) in laboratory and cemented pond conditions was investigated. Toxicity of aqueous and acetone latex extracts of this plant was time as well as dose dependent against fingerlings of Labeo rohita. The aqueous latex extracts of this plant is least effective in comparison to acetone latex extracts of Euphorbia pulcherima plant against the fingerlings of Labeo rohita. There was significant (P 1.10 mg/L (48h) in laboratory conditions and 5.25 mg/L (24h) > 4.94 mg/L (48h) in cemented pond condition against fingerlings of Labeo rohita. In case of aqueous latex extracts of Euphorbia pulcherima plant the LC values decrease from 50