Potential of garlic oil as a biopesticide against all Aedes aegypti life stages

Dusi, Renata, Morais, Lais, Magalhaes, Natalia, Albnernaz, Lorena, Hamilton, Christopher and Espindola, Laila (2022) Potential of garlic oil as a biopesticide against all Aedes aegypti life stages. Industrial Crops & Products, 181.

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Abstract

Vector control remains the most effective approach to prevent dengue, chikungunya and Zika arboviruses transmission. Conventional insecticides have historically failed to control the Aedes aegypti mosquito due to acquired resistance, environmental impact and toxicity. This study evaluated the potential of garlic oil as a biopesticide against the eggs, larvae, pupae and adult forms of Ae. aegypti eggs, in accordance with the World Health Organization recommendations. The larvicidal and pupicidal LC50 values were 1.0 ppm and 20.3 ppm after 72 h, respectively. The oil maintained its activity in simulated field trials, killing all larvae and pupae at the tested concentrations. At 100 ppm, garlic oil inhibited 59.6 ± 10.6% of egg hatching. Toxicity against the adult form was observed as was its potent spatial repellency. Garlic oils composed of different diallyl polysulfide ratios did not significantly impact insecticidal activity although the garlic oil polysulfide mixtures were more potent than the individual polysulfides. The ovicidal, larvicidal, pupicidal, adulticidal and repellent assays showed the broad activity of garlic oil against Ae. aegypti. These results, together with the activity in simulated field trials, support the applicability of garlic oil in integrated mosquito vector control programs.

Item Type: Article
Additional Information: Funding Information: The present study was supported by the Brazilian Ministry of Health with funding and fellowships under the ArboControl project grants: TED 74/2016 and 42/2017. We acknowledge the CAPES PrInt Program (Brazil) for the two fellowships: (i) University of East Anglia (UK) (process # 88887.468815/2019-00) and (ii) University of Notre Dame (USA) (88887.364317/2019-00). The authors are also grateful to John P. Grieco and Nicole L. Achee of the University of Notre Dame (USA) for repellency test technology transfer and support.
Uncontrolled Keywords: aedes aegypti,biopesticide,diallyl polysulfides,garlic oil,spatial repellency,vector control,agronomy and crop science,sdg 3 - good health and well-being ,/dk/atira/pure/subjectarea/asjc/1100/1102
Faculty \ School: Faculty of Science > School of Pharmacy
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Depositing User: LivePure Connector
Date Deposited: 24 Mar 2022 09:31
Last Modified: 10 May 2022 16:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/84256
DOI: 10.1016/j.indcrop.2022.114780

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