Multiple insecticide resistance in Anopheles gambiae (Diptera: Culicidae) from Pointe Noire, Republic of the Congo

Lizette L. Koekemoer; Belinda L. Spillings; Riann N. Christian; Te Chang M. Lo; Maria L. Kaiser; Ryan A.I. Norton; Shune V. Oliver; Kwang S. Choi; Basil D. Brooke; Richard H. Hunt; Maureen Coetzee

doi:10.1089/vbz.2010.0192

Multiple insecticide resistance in Anopheles gambiae (Diptera: Culicidae) from Pointe Noire, Republic of the Congo

Lizette L. Koekemoer, Belinda L. Spillings, Riann N. Christian, Te Chang M. Lo, Maria L. Kaiser, Ryan A.I. Norton, Shune V. Oliver, Kwang S. Choi, Basil D. Brooke, Richard H. Hunt, Maureen Coetzee

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Successful implementation of an integrated vector control program will rely on availability of accurate vector information in the specific location. However, such information can be limited in some countries. The aim of this study was to obtain baseline vector information from Pointe Noire on the Congo coast (Republic of the Congo). Field sampling was conducted during April 2009 in the village of Boutoto and its surrounds, close to the city of Pointe Noire. Anopheles gambiae sensu lato mosquitoes were collected resting indoors. Samples were analyzed for insecticide susceptibility, species identification, and Plasmodium sporozoite infection. Molecular and biochemical assays were conducted to characterize insecticide resistance mechanisms. The malaria vector A. gambiae S-form was the only mosquito species identified, and it had a high Plasmodium falciparum infection rate (9.6%). Multiple insecticide resistance was detected in this population with full susceptibility to only one insecticide class, the organophosphates. Dieldrin and DDT resistance was mainly attributed to target-site resistance (the Rdl and L1014F/L1014S kdr mutations respectively), whereas pyrethroid resistance was mainly attributed to P450 metabolic enzyme-mediated detoxification in addition to kdr. The role of various insecticide resistance mechanisms revealed a complex association between metabolic detoxification and reduced target-site sensitivity.

Original language	English
Pages (from-to)	1193-1200
Number of pages	8
Journal	Vector-Borne and Zoonotic Diseases
Volume	11
Issue number	8
DOIs	https://doi.org/10.1089/vbz.2010.0192
State	Published - 1 Aug 2011

Keywords

Anopheles gambiae
insecticide resistance
metabolic resistance
target site insensitivity
vector control

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1089/vbz.2010.0192

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Koekemoer, L. L., Spillings, B. L., Christian, R. N., Lo, T. C. M., Kaiser, M. L., Norton, R. A. I., Oliver, S. V., Choi, K. S., Brooke, B. D., Hunt, R. H., & Coetzee, M. (2011). Multiple insecticide resistance in Anopheles gambiae (Diptera: Culicidae) from Pointe Noire, Republic of the Congo. Vector-Borne and Zoonotic Diseases, 11(8), 1193-1200. https://doi.org/10.1089/vbz.2010.0192

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abstract = "Successful implementation of an integrated vector control program will rely on availability of accurate vector information in the specific location. However, such information can be limited in some countries. The aim of this study was to obtain baseline vector information from Pointe Noire on the Congo coast (Republic of the Congo). Field sampling was conducted during April 2009 in the village of Boutoto and its surrounds, close to the city of Pointe Noire. Anopheles gambiae sensu lato mosquitoes were collected resting indoors. Samples were analyzed for insecticide susceptibility, species identification, and Plasmodium sporozoite infection. Molecular and biochemical assays were conducted to characterize insecticide resistance mechanisms. The malaria vector A. gambiae S-form was the only mosquito species identified, and it had a high Plasmodium falciparum infection rate (9.6%). Multiple insecticide resistance was detected in this population with full susceptibility to only one insecticide class, the organophosphates. Dieldrin and DDT resistance was mainly attributed to target-site resistance (the Rdl and L1014F/L1014S kdr mutations respectively), whereas pyrethroid resistance was mainly attributed to P450 metabolic enzyme-mediated detoxification in addition to kdr. The role of various insecticide resistance mechanisms revealed a complex association between metabolic detoxification and reduced target-site sensitivity.",

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Multiple insecticide resistance in Anopheles gambiae (Diptera: Culicidae) from Pointe Noire, Republic of the Congo

Abstract

Keywords

UN SDGs

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