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Use of different cotton pest control strategies (conventional, organic and transgenic) had no impact on insecticide resistance in Anopheles gambiae s.l. populations in Burkina Faso, West Africa
  • +15
  • Moussa Namountougou,
  • Dieudonné Soma,
  • Ibrahim Sangaré,
  • Rousseau Djouaka,
  • Aristide Hien,
  • Mamadi KientegaOrcid,
  • Alexandre Kaboré,
  • Simon Sawadogo,
  • Aziz Millogo,
  • Mahamadou Balbone,
  • Thierry Baldet,
  • Jean Bosco Ouedraogo,
  • Thibaud Martin,
  • Frédéric Simard,
  • Georges Ouedraogo,
  • Abdoulaye Diabaté,
  • Olivier Gnankine,
  • Roch Dabire
Moussa Namountougou
Universite Nazi Boni
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Dieudonné Soma
Université Nazi BONI
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Ibrahim Sangaré
Université Nazi Boni
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Rousseau Djouaka
International Institute for Tropical Agriculture
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Aristide Hien
IRSS-DRO
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Mamadi Kientega
Orcid
Universite Nazi boni
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Alexandre Kaboré
IRSS-DRO
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Simon Sawadogo
IRSS-DRO
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Aziz Millogo
IRSS-DRO
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Mahamadou Balbone
Université Joseph KI-ZERBO
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Thierry Baldet
ASTRE, CIRAD, INRA, Universite de Montpellier
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Jean Bosco Ouedraogo
IRSS-DRO
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Thibaud Martin
CIRAD Departement Systemes biologiques
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Frédéric Simard
MIVEGEC
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Georges Ouedraogo
Universite Nazi Boni
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Abdoulaye Diabaté
IRSS-DRO
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Olivier Gnankine
Universite de Ouagadougou
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Roch Dabire
IRSS-DRO
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Abstract

Resistance to insecticides in the mosquito Anopheles gambiae s.l can jeopardize malaria vector control strategies in Africa. Previous studies have shown that the agricultural use of pesticides, particularly for cotton protection, contributes to the selection of insecticide resistance of malaria vector mosquitoes. Our study aimed at assessing the impact of three cotton pests control strategies in different ecological settings (conventional, organic and transgenic cotton growing areas) on the i) susceptibility to insecticides (Permethrin and Deltamethrin (pyrethroids), DDT (organochlorine), Bendiocarb (carbamate), chlorpyriphos-methyl (organophosphate) tested on the main malaria vectors and ii) frequencies of kdr L1014F, during rainy season of 2008, 2009, 2013 and 2014 in Burkina Faso, West Africa. From 2008 to 2014, a reduction in susceptibility to all insecticides except chlorpyriphos-methyl was detected in most populations of An. gambiae s.l from the three cotton growing areas. The frequency of kdr-w mutations varied depending on localities and species within the An. gambiae complex, but we found no relationship between the cotton pest control strategy and the frequency of kdr-w or, otherwise with phenotypic resistance evaluated from bioassays. The implementation of organic cotton and Bt transgenic cotton programs in certain areas of Burkina Faso does not change the insecticide resistance status of An. gambiae s.l. populations in the region concerned. These results confirm the worrying status of insecticide multi-resistance of the main malaria vector mosquito species in Burkina Faso.