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Interactions between vector competence to chikungunya virus and resistance to deltamethrin in Aedes aegypti laboratory lines? | LitMetric

Interactions between vector competence to chikungunya virus and resistance to deltamethrin in Aedes aegypti laboratory lines?

Med Vet Entomol

Vectopôle Amazonien Emile Abonnenc, Unité de contrôle et adaptation des vecteurs, Institut Pasteur de la Guyane, Cayenne cedex, France.

Published: December 2022

AI Article Synopsis

  • * In French Guiana, researchers identified three mosquito populations with varying resistance levels to the insecticide deltamethrin, one showing a specific resistance allele.
  • * Differences in chikungunya virus infection rates were observed among these mosquito populations, with certain genes linked to resistance being overexpressed after feeding, highlighting a potential connection that needs further investigation.

Article Abstract

The urban mosquito species Aedes aegypti is the main vector of arboviruses worldwide. Mosquito control with insecticides is the most prevalent method for preventing transmission in the absence of effective vaccines and available treatments; however, the extensive use of insecticides has led to the development of resistance in mosquito populations throughout the world, and the number of epidemics caused by arboviruses has increased. Three mosquito lines with different resistance profiles to deltamethrin were isolated in French Guiana, including one with the I1016 knock-down resistant allele. Significant differences were observed in the cumulative proportion of mosquitoes with a disseminated chikungunya virus infection over time across these lines. In addition, some genes related to resistance (CYP6BB2, CYP6N12, GST2, trypsin) were variably overexpressed in the midgut at 7 days after an infectious bloodmeal in these three lines. Our work shows that vector competence for chikungunya virus varied between Ae. aegypti laboratory lines with different deltamethrin resistance profiles. More accurate verification of the functional association between insecticide resistance and vector competence remains to be demonstrated.

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Source
http://dx.doi.org/10.1111/mve.12593DOI Listing

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