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Alout, Haoues Ndam, Nicaise Tuikue Sandeu, Marcel Maurice Djégbe, Innocent Chandre, Fabrice Dabiré, Roch Kounbobr Djogbénou, Luc Salako Corbel, Vincent Cohuet, Anna Insecticide Resistance Alleles Affect Vector Competence of Anopheles gambiae s.s. Alout, Haoues Djègbè, Innocent Chandre, Fabrice Djogbénou, Luc Salako Dabiré, Roch Kounbobr Corbel, Vincent Cohuet, Anna Insecticide exposure impacts vector–parasite interactions in insecticide-resistant malaria vectors, Proceedings of the Royal Society B: Biological Sciences, Volume 281 (2014) no. Our study demonstrates a complex interaction between insecticide exposure and the kdr mutation on the biting behavior of mosquitoes, which may substantially impact malaria vector fitness and disease transmission.
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Exposure to the two types of pyrethroid-treated nets reduced feeding duration, prediuresis duration and blood meal size of all three genotypes. Exposure to deltamethrin ITN decreased the blood feeding success rate of RR and RS mosquitoes, whereas in presence of permethrin ITN, the kdr mutation increased the blood-feeding success of mosquitoes. In presence of untreated nets, the kdr mutation did not influence mosquito blood feeding success but caused differences in feeding and prediuresis durations and blood meal size. homozygous resistant), after a brief exposure to either control untreated nets or one of two types of pyrethroid-treated nets (deltamethrin or permethrin).
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To this aim, we developed a video assay to study the biting behaviour of mosquitoes with similar genetic background, but different kdr locus genotypes (SS i.e. Here, we investigated the effect of a brief exposure to an ITN on the biting behaviour of Anopheles gambiae mosquitoes and the interaction between such behaviour and the kdr mutation that confers resistance to pyrethroids. The massive use of insecticide-treated nets (ITNs) has drastically changed the environment for malaria vector mosquitoes, challenging their host-seeking behaviour and biting success.