Larvicidal activity of natural repellents against the dengue vector, aedes aegypti

Authors: ZHANG, SHOUGANG - Anastasia Mosquito Control District; BLORE, KAI - Anastasia Mosquito Control District; XUE, RUI-DE - Anastasia Mosquito Control District; QUALLS, WHITNEY - Anastasia Mosquito Control District; Cermak, Steven - Steve; Zhu, Junwei - Jerry

Submitted to: Journal of the American Mosquito Control Association
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/18/2020
Publication Date: 2/17/2021
Citation: Zhang, S., Blore, K., Xue, R., Qualls, W., Cermak, S.C., Zhu, J.J. 2021. Larvicidal activity of natural repellents against the dengue vector, aedes aegypti. Journal of the American Mosquito Control Association. 36(4):227–232. https://doi.org/10.2987/20-6916.1.
DOI: https://doi.org/10.2987/20-6916.1

Interpretive Summary: The present research aimed to evaluate larvicidal activity of several recently discovered natural product repellent in lotions against larvae of Aedes aegypti. The purpose is to understand whether the lotions of adult mosquito repellents can also be used for larval control.

Technical Abstract: A modified larval bioassay method adopted by The World Health Organization’s standards was used to evaluate mortality after exposure at 24h, 48h and 72h. Among the test repellents, 2-undecanone showed 100% mortality against Ae. aegypti larvae followed by catnip oil, capric acid, coconut oil fatty acids, methyl caprate, methyl laurate and coconut oil methyl esters. 2-Undecanone showed the highest mortality with LC50 values of 73.07, 26.45 and 15.68 ppm at 24h, 48h and 72h, respectively. Larvicidal activities were also varied among the tested repellent compounds in different carriers.