Vol. 6, Issue 2, Part A (2019)

Author(s): Amaninder Kaur Riat and Devinder Kaur Kocher

Abstract: Malaria transmitted by Anopheles stephensi mosquito is one of the serious infectious diseases among vector borne diseases. Many plant-based extracts/oils have unique larvicidal activity against mosquitoes. This study was designed to determine the toxicity of Eucalyptus globulus oil against An. stephensi larvae. Different concentrations of E. globulus oil @ 50, 60, 70, 80, 90 and 100 ppm were tested against 4^th instar larvae of An. stephensi. Mortality was recorded after 3, 6, 12, 24 and 48 hrs. LC₅₀ and LC₉₀ values of toxicity were determined by log- probit technique. Out of these tested concentrations, 90 ppm of E. globulus were calculated out to be the effective ones. LC₅₀ and LC₉₀ values were found to be 46.11 and 69.33 ppm for E. globulus oil, against An. stephensi larvae after 48hours. E. globulus proved to have good potential as a bio-larvicide against An. stephensi and could be used as effective and ecofriendly mosquito control agent in future.