Mosquitocidal activity of twenty-eight plant essential oils and their binary mixtures against Culex quinquefasciatus, (Diptera: Culicidae)
Sudarshana Mahanta, Bulbuli Khanikor
Abstract
BACKGROUND: Mosquito control programme using synthetic insecticides has been facing the challenges of resistance development. However, synergistic combinations of plant essential oils (EOs) having different modes of actions and potent lethal toxicity may further negate the concern of resistance development. METHODS: . Mixtures were prepared by blending LC10 or LD10 concentration/doses of candidates at different volume ratios. RESULTS: (leaves) (AsB + CpL) was found to possess highest activity against larvae after considering its dose and synergistic interaction. GC-MS analysis revealed the presence of diallyl trisulfide, diallyl disulfide, beta-citronellol, ocimene as major constituents of AsB + CpP combination and diallyl disulfide, linalool, citronellal, caryophyllene oxide etc. in AsB + CpL combination. CONCLUSIONS: .