PRELIMINARY PHYTOCHEMICAL QUALITATIVE AND QUANTITATIVE ANALYSIS OF BRASSICA OLERACEA LEAF EXTRACTS ON FOURTH INSTAR LARVAE OF AEDES AEGYPTI (CULICIDEA: DIPTERA)

Abstract

Aedes aegypti, dengue fever mosquito, is primarily associated with the transmission of dengue in tropical and subtropical regions of the world. The present investigations was carried out to assess the larvicidal efficacy of aqueous and ethanol leaf extract of Brassica oleracea var. botrytis L against 4th instar larvae of  Ae.aegypti. The concentration of extracts prepared from the leaf of plant Brassica oleracea var.botrytis L. were screened for their larvicidal activity against early fourth instars of dengue vector. The mortality rate of Ae.aegypti against aqueous and ethanol extracts of B.oleracea as follows 72% and 96%. Ethanol extract exposed to IVth larvae of Ae.aegypti is more efficiency than the aqueous extract. The present investigation suggest the possible use B. oleracea L. as an agent for the control of dengue vector, A. aegypti.