Bougainvillea spectabilis Wild., a potential larvicidal agent to control the filarial vector, Culex quinquefasciatus Say.

E. Pushpalatha

Volume : IX, Issue : IV, April - 2019

Bougainvillea spectabilis Wild., a potential larvicidal agent to control the filarial vector, Culex quinquefasciatus Say.

E. Pushpalatha

Abstract :

Larvicidal property of Bougainvillea spectabilis Wild. leaf extracts were studied against the filarial vector Culex quinquefasciatus Say, Methanol and Acetone extracts of the leaf possess larvicidal properties and estimated 24 hr LC50 were 358.8 and 56.9 ppm respectively. The less active methanol fraction of Bougainvillea spectabilis was subjected to column fractionation and the n– Hexane: Ethyl acetate, 5:5 column fraction show an enhanced larvicidal property than that of crude methanol extract. The crude methanol extract produced a mortality of 96.67 % at 700 ppm whereas the n– Hexane: Ethyl acetate, 5:5 column fraction of methanol extract produced 96.67 % mortality at 200 ppm.