Chemical Composition and Larvicidal Activity of Lavandula angustifolia Subsp. angustifolia and Lavandula dentata Spp. dentata Essential Oils against Culex pipiens Larvae, Vector of West Nile Virus
Open Access
- 14 April 2021
- journal article
- research article
- Published by Hindawi Limited in Psyche: A Journal of Entomology
- Vol. 2021, 1-7
- https://doi.org/10.1155/2021/8872139
Abstract
The Culex pipiens mosquito (Diptera: Culicidae) is highly suspected to be the vector responsible for the spread of several parasitic and viral diseases. The use of synthetic insecticides is generally the preferred method of controlling these mosquitoes proliferation. However, it has led to resistance problems in target mosquitoes and environmental damage. Hence, diverse plant extracts could be considered as an alternative and potential source as mosquito control agents. In this study, essential oils of Lavandula angustifolia subsp. angustifolia and Lavandula dentata spp. dentata that are growing in Morocco were examined for their insecticidal effects on Culex pipiens larvae. The bioassay was performed according to a methodology inspired by the standard protocol of the World Health Organization. The mortality rate was determined after 24 hours of exposure, and probit regression analysis was used to calculate LC50 and LC90. The chemical analysis revealed that the principal compounds of L. angustifolia subsp. essential oils include linalool, linalyl acetate, geraniol, lavandulyl acetate, camphor, β-caryophyllene, terpinen-4-ol, β-myrcene, and 1,8-cineole, while the essential oil of L. dentata spp. was mainly composed of 1,8-cineole, camphor, α-pinene, trans-pinocarveol, linalool, and borneol. These volatile compounds have shown a toxic effect against Culex pipiens larvae, with lethal concentrations LC50 and LC90 being, respectively, 140µg/ml and 450µg/ml, for the L. angustifolia subsp. essential oil. Meanwhile, they were estimated at 2670µg/ml and 7400µg/ml, respectively, for the L. dentata spp. essential oil. These results suggest using essential oils of two species of Lavandula to control the Culex pipiens mosquito. It could be useful for the study of new natural larvicidal compounds.Keywords
This publication has 27 references indexed in Scilit:
- A Review of Resistance Mechanisms of Synthetic Insecticides and Botanicals, Phytochemicals, and Essential Oils as Alternative Larvicidal Agents Against MosquitoesFrontiers in Physiology, 2020
- The importance of vector control for the control and elimination of vector-borne diseasesPLoS Neglected Tropical Diseases, 2020
- Plant extracts for developing mosquito larvicides: From laboratory to the field, with insights on the modes of actionActa Tropica, 2019
- Resistance to insecticides and synergistic and antagonistic effects of essential oils on dimefluthrin toxicity in a field population of Culex quinquefasciatus SayEcotoxicology and Environmental Safety, 2018
- Comparative Analysis of Major Mosquito Vectors Response to Seed-Derived Essential Oil and Seed Pod-Derived Extract from Acacia niloticaInternational Journal of Environmental Research and Public Health, 2018
- Insecticide resistance and target site mutations (G119S ace-1 and L1014F kdr) of Culex pipiens in MoroccoParasites & Vectors, 2018
- First report of L1014F-kdr mutation in Culex pipiens complex from MoroccoParasites & Vectors, 2016
- Mosquitocidal Effect of Glycosmis pentaphylla Leaf Extracts against Three Mosquito Species (Diptera: Culicidae)PLOS ONE, 2016
- Insecticidal potential of Ocimum canum plant extracts against Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus larval and adult mosquitoes (Diptera: Culicidae)Natural Product Research, 2015
- Larvicidal activity of tectoquinone isolated from red heartwood-type Cryptomeria japonica against two mosquito speciesBioresource Technology, 2008