Larvicidal activity of Murraya koenigii against Aedes Mosquito

Abstract

The control of mosquito species is a challenging task which solely depends upon chemical insecticides as there is no effective alternative approach has filled this gap. There are various plant based chemicals known as phytochemicals having compounds which can control the mosquito's population efficiently as a cost effective method. Murraya koenigii has been found to have insecticidal properties and was found to be effective in order to control the pest populations. We have tested the leaves and stems of this plant against the 3 rd and 4 th larval instars of Aedes mosquito which is a major vector of dengue disease. We have tested the shade dried and sun dried extracts of leaves and stems prepared by boiling method of Murraya koenigii at various concentrations at different time intervals. Good mortality rates were observed in shade dried leaves extract as compared to the sun dried extract of leaves and stem as well as shade dried extract of stem. Highest mortality i.e. 76.67% was shown by shade dry leaves at 200 ppm concentration after 72 hours and lowest mortality i.e. 60% was shown by sundry stem extract at 200 ppm after 72 hours.