Authors : K.P. Prathibha, B.S. Raghavendra and V.A. Vijayan
Abstract: With the development of resistance to conventionally used synthetic insecticides, vector management has become very difficult. Hence, scientists have shown interest on botanicals. It is in this regard, present study was aimed to evaluate the efficacy of extracts of Euodia ridleyi leaves against the larvae of vectors of filariasis, malaria and dengue fever vectors namely Culex quinquefasciatus, Anopheles stephensi and Aedes aegypti, respectively employing the standard WHO bioassay method. Non-polar organic solvents such as petroleum ether, ethyl acetate, acetone and methanol were employed for soxhlet extraction. The results project that efficacy of ethyl acetate extract is the most effective among the four solvents. The efficacy was found to be maximum on the larvae of Culex quinquefasciatus with LC50 of 64.59 ppm than the other two species. Similarly the LC50 against Anopheles stephensi and Aedes aegypti were 120.07 and 139.88 ppm, respectively. The data highlights the importance of Euodia ridleyi as a promising local plants with larvicidal potency for further studies to isolate the active molecule in it.
K.P. Prathibha, B.S. Raghavendra and V.A. Vijayan, 2010. Evaluation of Larvicidal Effect of Euodia ridleyi Hochr. Leaf Extract Against Three Mosquito Species at Mysore. Research Journal of Biological Sciences, 5: 452-455.