Abstract
RNA interference (RNAi), an innate regulatory mechanism that is conserved across many eukaryotic species, has been harnessed for experimental gene silencing in many organisms, including mosquitoes. This protocol describes an optimized method for inducing RNAi in adult Aedes aegypti and Anopheles gambiae mosquitoes that involves feeding them a red-colored sugar bait containing small interfering RNA (siRNA). This oral delivery method is less physically disruptive than delivery by subcutaneous injection, and the use of siRNAs (in contrast to long dsRNAs) for RNAi enables the design of molecules that target conserved sites so that gene function can be studied in multiple species. After feeding, the behavioral and morbidity phenotypes that result from the suppression of target gene expression can then be analyzed.
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