Abstract
Cuticular proteins (CPs) are implicated in insecticide resistance in mosquito populations. Here, we investigated the role of cuticular genes in regulation of insecticide resistance in Culex pipiens pallens. We identified two CpCPRs (CpCPR63 and CpCPR47) that exhibited higher transcript levels in pyrethroid-resistant strains than in susceptible strains. Mosquito mortality was increased after knockdown of CpCPR genes by dsRNA injection. The RNA interference experiment suggested an interaction between CpCPR63 and CpCPR47, as silencing of one gene resulted in decreased expression of the other. These findings revealed that CpCPRs may regulate pyrethroid resistance and could be used as a potential genetic marker to monitor pyrethroid resistance in mosquitoes.
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