Comparative Sensitivity of Representative Mosquitoes (Diptera: Culicidae) to Repellents1

Abstract
The median effective dosages (ED50's) of 31 commercial and experimental repellents were determined for Anopheles stephensi, Anopheles albimanus, Aedes taeniorhynchus, Aedes aegypti , and Culex pipiens. Aedes taeniorhynchus and Cx. pipiens were significantly more sensitive to repellents than were Ae. aegypti and An. albimanus . Patterns of sensitivity to the 31 test compounds were not related to the taxonomic relationships of the species tested. Aedes aegypti , the traditional test species for repellent studies, was an exceptionally poor predictor for the responses of An. stephensi to repellents. Testing strategies are discussed for repellent screening programs and for testing specific and broad-spectrum repellents.

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