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Insecticide susceptibility of Anopheles coluzzii and Anopheles gambiae mosquitoes in Ibadan, Southwest Nigeria
Open accessAbstract
The emergence of insecticide resistance in A nopheles ( D iptera: C ulicidae) mosquitoes has great implications for malaria control in N igeria. This study aimed to determine the dynamics of insecticide susceptibility levels and the frequency of knock‐down resistance ( kdr ) mutations ( L1014F ) in wild A nopheles coluzzii C oetzee & W ilkerson sp. n. and A nopheles gambiae G iles from the O joo and B odija areas of I badan, in southwest N igeria. Insecticide susceptibility to pyrethroids, organophosphates, carbamates and organochlorines was assessed using World Health Organization ( WHO ) bioassays. A subset of the mosquitoes exposed to pyrethroids and DDT was used for species and molecular form identification; kdr genotyping was determined using the T aq M an real‐time polymerase chain reaction assay. The mosquitoes were resistant to pyrethroids and DDT but completely susceptible to organophosphates and carbamates. Bodija samples ( n = 186) consisted of A n. gambiae (91.4%) and A n. coluzzii (8.1%) and included one A n. coluzzii / A n. gambiae hybrid specimen. All mosquitoes screened in O joo ( n = 26) were A n. gambiae . The 1014F kdr mutation was detected at frequencies of 24.5 and 5.8% in B odija and O joo, respectively. No correlation was observed between kdr genotypes and resistance phenotypes. The results indicate that metabolic resistance probably plays an important role in the development of resistance and highlight the need to implement insecticide resistance management strategies.
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These mutations have also been detected with high frequencies in An. gambiae (s.l.) in many regions of West Africa, with ecological similarities in Burkina Faso and Benin.
“These mutations have also been detected with high frequencies in An. gambiae (s.l.) in many regions of West Africa [28, 29] with ecological similarities in Burkina Faso and Benin (cotton, rice and urban/sub-urban vegetable growing areas) [30, 31].”
From Mapping insecticide resistance in Anopheles gambiae (s.l.) from Côte d'Ivoire (2018) · cites this paper as [28]
The Results (Kdr mutation; page unavailable) report L1014F in An. gambiae and An. coluzzii at two sites in Ibadan, Nigeria. The paper does not establish high mutation frequencies across many West African regions or the claimed ecological similarities involving cotton, rice, and vegetable-growing areas in Burkina Faso and Benin. (LLM, conf=0.82)
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Mapping insecticide resistance in Anopheles gambiae (s.l.) from Côte d'Ivoire
Camara, S., Koffi, A. A., Ahoua Alou, L. P., Koffi, K., Kabran, J.-P. K., Koné, A., Koffi, M. F., N’Guessan, R., & Pennetier, C. (2018) · Parasites & Vectors · doi:10.1186/s13071-017-2546-1 · Cited by 99
“These mutations have also been detected with high frequencies in An. gambiae (s.l.) in many regions of West Africa [28, 29] with ecological similarities in Burkina Faso and Benin (cotton, rice and urban/suburban vegetable growing areas) [30, 31].”
BackgroundInfluentialMuhammad, A., Ibrahim, S. S., Mukhtar, M. M., Irving, H., Abajue, M. C., Edith, N. M. A., Da’u, S. S., Paine, M. J. I., & Wondji, C. S. (2021) · PLOS ONE · doi:10.1371/journal.pone.0247944 · Cited by 35
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Metadata
- Authors
- OKORIE, P. N., ADEMOWO, O. G., IRVING, H., KELLY‐HOPE, L. A., & WONDJI, C. S.
- Affiliations
- University of Ibadan (NG)
- Liverpool School of Tropical Medicine (GB)
- University of Liverpool (GB)
- Corresponding author
- OKORIE, P. N.
- Venue
- Medical and Veterinary Entomology
- Publisher
- Wiley
- Published
- 2014-11-22
- Volume
- 29
- Issue
- 1
- Pages
- 44-50
- ISSN
- 0269-283X (ISSN-L)
- 1365-2915
- PMC
- PMC4319996
- OpenAlex
- W1660474053
- Cited by
- 34
- References
- 3
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 7 · 2019: 5 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 2
- FWCI
- 2.65
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Medical and Veterinary Entomology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- Medical Education Partnership Initiative in Nigeria (R24TW008878)
- Wellcome Trust Research Career Development Fellowship (083515/Z/07/Z)
- Topics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Dengue and Mosquito Control Research
- Keywords
- insecticide resistance, Anopheles coluzzii, Anopheles gambiae, malaria vectors, pyrethroid resistance, DDT resistance, knockdown resistance, kdr mutation, L1014F, metabolic resistance, organophosphates, carbamates, organochlorine compounds, Ibadan, insecticide resistance management
- MeSH terms
- Animals, Anopheles, Carbamates, Decision Making, Insecticide Resistance, Insecticides, Mosquito Control, Nigeria, Organophosphates, Insect Proteins, Mutation Rate
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