Introgression of Insecticide Resistance in Mosquitoes
Author Information
Author(s): Djogbénou Luc, Chandre Fabrice, Berthomieu Arnaud, Dabiré Roch, Koffi Alphonsine, Alout Haoues, Weill Mylène
Primary Institution: Institut de Recherche pour le Développement, Cotonou, Benin
Hypothesis
Did the G119S mutation in the ace-1 gene arise independently in different forms of Anopheles gambiae or through genetic introgression?
Conclusion
The G119S mutation in the ace-1 gene likely resulted from genetic introgression between the M and S forms of Anopheles gambiae.
Supporting Evidence
- The G119S mutation was found in both M and S forms where they were sympatric.
- The mutation was not detected in the M form of A. gambiae s.s from Benin.
- The study revealed a duplication of the ace-1 gene in some resistant individuals.
Takeaway
Scientists studied mosquitoes to see if a specific mutation that helps them resist insecticides came from one type of mosquito or if it spread between different types. They found it likely spread between them.
Methodology
The study analyzed coding and non-coding sequences of ace-1 alleles in M and S mosquitoes from various field populations.
Limitations
The study could not determine whether the G119S mutation occurred first in the S form or in the M form.
Participant Demographics
Mosquitoes were collected from Burkina Faso, Benin, and Côte d'Ivoire.
Digital Object Identifier (DOI)
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