Larvicidal properties of hexane extract of seeds of Madhuca indica Linn. (Family: Sapotaceae) against vector species of mosquitoes

摘要

Hexane extract of seed of Madhuca indica was evaluated for its mosquito larvicidal properties against the larvae of three vector species of mosquito under laboratory conditions. This extract showed strong larvicidal properties, cent percent mortalityin the third instar larvae was observed in the bioassay test with Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti at a concentration of 1.0, 1.0 and 2.0% respectively. The LC50, LC90 values estimated for 3rd instar larvae An. stephensi, Cx.quinquefasciatus and Ae. aegypti after 24 hours of exposure period were 0.08, 0.1 and 0.1% and LC_(90) values were 0.8, 0.81 and 0.8% respectively. It is observed that the essential oil of seed is more effective against An. Stephensi (0.08). Madhuca indica therefore, can be considered as a probable source of phy-tochemical used for the development of larvicidal agents against disease vectors.