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ARS Home » Southeast Area » Gainesville, Florida » Center for Medical, Agricultural and Veterinary Entomology » Mosquito and Fly Research » Research » Publications at this Location » Publication #234381
Title: Toxicity comparison of eight repellents against four species of female mosquitoes (Diptera: Culicidae)

Author
item Wei Pridgeon, Yuping
item Bernier, Ulrich
item Becnel, James

Submitted to: Journal of the American Mosquito Control Association
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/13/2009
Publication Date: 6/30/2009
Citation: Pridgeon, J.W., Bernier, U.R., Becnel, J.J. 2009. Toxicity comparison of eight repellents against four species of female mosquitoes. Journal of the American Mosquito Control Association. 25(2):168-173.

Interpretive Summary: The relative toxicities of eight repellents (DMP, Rutgers 612, DEET, IR3535, Picardin, PMD, AI3-35765, and AI3-37220) were evaluated by topical application against four species of mosquitoes: (1) Aedes aegypti (L.); (2) Culex quinquefasciatus Say; (3) Anopheles quadrimaculatus Say; (4) Anopheles albimanus Weidemann. Based on 24h LD50 values, the most toxic repellent against all four mosquito species was AI3-37220 and the least toxic of the eight repellents tested was DMP. The results of ARS scientists at the Center for Medical, Agricultural and Veterinary Entomology in Gainesvill, FL revealed that An. albimanus was the most susceptible species to the repellents tested, followed by An. quadrimaculatus Say, then Ae. aegypti and Cx. quinquefasciatus. The findings of the study reported herein provide a comprehensive examination of the toxicities of four currently used, two formerly used, and two experimental repellent ingredients against a range of mosquito species.

Technical Abstract: The relative toxicities of eight repellents (DMP, Rutgers 612, DEET, IR3535, Picardin, PMD, AI3-35765, and AI3-37220) were evaluated by topical application against females of Aedes aegypti (L.) Culex quinquefasciatus Say, Anopheles quadrimaculatus Say, and Anopheles albimanus Weidemann. Based on 24h LD50 values, the most toxic repellent against all four mosquito species was AI3-37220, with values of 0.72, 0.54, 0.31, and 0.20 'g/mosquito for the listed four repellents, respectively. The least toxic of the eight repellents tested was DMP, with LD50 values of 15.39, 9.54, 4.80, and 3.49 'g/mosquito, respectively. Based on the 24-h LD50 values, An. albimanus was the most susceptible species, followed by An. quadrimaculatus Say, then Ae. aegypti and Cx. quinquefasciatus. The findings of the study reported herein provide a comprehensive examination of the toxicities of four currently used, two formerly used, and two experimental repellent ingredients against a range of mosquito species.