Department of Zoology, Annamalai University,
Chidambaram, Tamilnadu, India
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Mosquitocidal activities of Lavandula angustifolia (L. angustifolia) different concentration of essential oil (EO) and its major phytocompounds (MPCs) tested against three important human vector mosquitoes (HVMs). The quantitative analyses of EO phyto-chemical compositions (PCCs) were analyzed by using Gas Chromatography-Mass Spectrometry (GC-MS). The HVMs were exposed to various concentrations of EO and its MPCs tested under laboratory condition by using standard protocols. Vector mortalities were subjected to log-probit analysis. Chemical compositions (CCs) of 47 compounds were identified and the MPCs of EO were Terpinen (38.0339%) followed by Linalool (34.4992%), Caryophyllene (6.1480%), Octanone (2.3906%) and Camphene (2.0989%). The maximum larval mortality was found in Linalool against the larvae of Aedes aegypti (Ae. aegypti) followed by Anopheles stephensi (An. stephensi) and Culex quinquefasciatus (Cx. quinquefasciatus) with the LC50 values were 36.26, 36.81 and 37.49 ppm respectively. Ovicidal activity of the Linalool found most effective than other compounds. These results are clearly suggests that EO and its MPCs have the potential to be used as an ideal ecofriendly approach, traditional method for control of HVMs and this is the first report on the mosquitocidal activities of L. angustifolia EO of MPCs.