ArticleMalaria journal2024
Adult mosquitoes of the sibling species Anopheles gambiae and Anopheles coluzzii exhibit contrasting patterns of susceptibility to four neonicotinoid insecticides along an urban-to-rural gradient in Yaoundé, Cameroon.
Article in Malaria journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 9 citations in OpenAlex.
- Contrasting Oviposition Preference Despite Limited Chemosensory Receptor Gene Differentiation in Two Cryptic Anopheles Species.Molecular ecology · 2026Article
- Comparative genomics of nicotinic acetylcholine receptors reveals early divergence of the α6 subunit in cryptic Anopheles species.BMC genomics · 2026Article
- Impact of indoor residual spraying and insecticide-treated nets on malaria burden in 8 districts in West Nile and Acholi regions, Uganda: a quasi-experimental study.BMC global and public health · 2026Article
- Behavioral divergence between a generalist and a specialist mosquito despite minimal differentiation across chemosensory receptor gene families.bioRxiv : the preprint server for biology · 2025Article
- Standing genetic variation underlies divergence of nicotinic acetylcholine receptor subunits among cryptic species of thebioRxiv : the preprint server for biology · 2025Article
- Cross-Resistance to Pyrethroids and Neonicotinoids in Malaria Vectors from Vegetable Farms in the Northern Benin.Tropical medicine and infectious disease · 2024Article
- Field-evolved resistance to neonicotinoids in the mosquito, Anopheles gambiae, is associated with mutations of nicotinic acetylcholine receptor subunits combined with cytochrome P450-mediated detoxification.Pesticide biochemistry and physiology · 2024Article
- Field-evolved resistance to neonicotinoids in the mosquito,bioRxiv : the preprint server for biology · 2024Article
- Functional Validation of Endogenous Redox PartnerInternational journal of molecular sciences · 2024Article
- Anopheles gambiae larvae's ability to grow and emerge in water containing lethal concentrations of clothianidin, acetamiprid, or imidacloprid is consistent with cross-resistance to neonicotinoids.Parasites & vectors · 2024Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundNeonicotinoids are potential alternatives for controlling pyrethroid-resistant mosquitoes, but their efficacy against malaria vector populations of sub-Saharan Africa has yet to be investigated. The aim of the present study was to test the efficacy of four neonicotinoids against adult populations of the sibling species Anopheles gambiae and Anopheles coluzzii sampled along an urban-to-rural gradient.
methodsThe lethal toxicity of three active ingredients for adults of two susceptible Anopheles strains was assessed using concentration-response assays, and their discriminating concentrations were calculated. The discriminating concentrations were then used to test the susceptibility of An. gambiae and An. coluzzii mosquitoes collected from urban, suburban and rural areas of Yaoundé, Cameroon, to acetamiprid, imidacloprid, clothianidin and thiamethoxam.
resultsLethal concentrations of neonicotinoids were relatively high suggesting that this class of insecticides has low toxicity against Anopheles mosquitoes. Reduced susceptibility to the four neonicotinoids tested was detected in An. gambiae populations collected from rural and suburban areas. By contrast, adults of An. coluzzii that occurred in urbanized settings were susceptible to neonicotinoids except acetamiprid for which 80% mortality was obtained within 72 h of insecticide exposure. The cytochrome inhibitor, piperonyl butoxide (PBO), significantly enhanced the activity of clothianidin and acetamiprid against An. gambiae mosquitoes.
conclusionsThese findings corroborate susceptibility profiles observed in larvae and highlight a significant variation in tolerance to neonicotinoids between An. gambiae and An. coluzzii populations from Yaoundé. Further studies are needed to disentangle the role of exposure to agricultural pesticides and of cross-resistance mechanisms in the development of neonicotinoid resistance in some Anopheles species.
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