MOSQUITO OVICIDAL AND REPELLENT ACTIVITY OF MELOTHRIA MADERASPATANA PLANT LEAF EXTRACTS AGAINST AEDES AEGYPTI (DIPTERA: CULICIDAE (original) (raw)

To evaluate the ovicidal and repellent activities of acetone, benzene, ethyl acetate, hexane and methanol extracts of Melothria maderaspatana against Aedes aegypti. For ovicidal activity, slightly modified method of Su and Mulla was performed. Ovicidal activity was determined against selected mosquito to various concentrations ranging from 40-240 ppm under laboratory conditions. The hatch rates were assessed 48 h post treatment. The repellent efficacy was determined against selected mosquito species at three concentrations viz., 1.0, 2.0 and 3.0 mg/cm 2 under laboratory conditions. The crude extracts of acetone, benzene, ethyl acetate, hexane and methanol M. maderaspatana exerted 100% egg mortality (zero hatchability) at 240, 200, 160, 160 and 120 ppm for Ae. Aegypti. Similarly, a higher concentration of 3.0 mg/ cm 2 crude extracts of acetone, benzene, ethyl acetate, hexane and methanol extracts of M. maderaspatana provided100% protection up to 80, 100, 120, 120 and 140 min against Ae. Aegypti. The present results suggest that the M. maderaspatana methanol leaf extracts provided an excellent potential for controlling selected medically important vector mosquito.