LARVICIDAL ACTIVITY OF ANNONA SQUAMOSA LEAF AND SEED EXTRACT AGAINST IMMATURE STAGES OF CULEX QUINQUEFASCIATUS
K. MANIMEGALA *
DEPARTMENT OF ZOOLOGY, AVINAS HILINGAM INSTITUTE FOR HOME SCIENCE AND HIGHER EDUCATION FOR WOMEN, COIMBATORE-641 043, INDIA
*Author to whom correspondence should be addressed.
Abstract
Petroleum ether, chloroform and ethanol extracts of the leaf and seed of Annona squamosa were evaluated for larvicidal activity against laboratory reared fourth instar larvae of Culex quinquefasciatus, a vector of the Bancroftian filariasis and urban nuisance mosquito. The larval mortality was observed after 24 hr exposure. The extract was found to suppress the population of the vector at higher dosage, while the lower dosages found to induce several developmental defects.
Keywords: Larvicidal activity, Annona squamosa,, Culex quinquefasciatus