Background And Aim: To develop an environmentally friendly alternative to mosquito larvicides for vegetables, leaf extracts of , , , , , and were prepared. This study aimed to determine the biological efficacy of several leaf extracts on the mortality of mosquito and the inhibition of egg hatching.

Materials And Methods: Extraction was performed in an organic solvent (methanol) using a Soxhlet extractor. The larvicidal potential of six leaves of essential oil was evaluated against the third instar larvae of at concentrations of 1500, 2000, 3000, and 5000 ppm using the World Health Organization protocol. After Probit analysis, the 48 h LC and LC values of the essential oils were determined. The inhibitory effect on egg hatching was also tested at 160, 320, 480, and 640 ppm.

Results: The extraction of essential oils from several species had excellent larvicidal activity and inhibitory activity against egg hatching. The LC/LC values were: , 241/1964 ppm; , 2739/4035 ppm; and , 1831/2618 ppm. The inhibitory effect on hatching was 78% for , 70% for , and 59% for .

Conclusion: The test results indicate the potential of some species for use as larvicides and inhibitors of egg hatching; thus, they have the potential to control in the early stages of development.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9394156PMC
http://dx.doi.org/10.14202/vetworld.2022.1753-1758DOI Listing

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