Cargando…

Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes

Aedes aegypti and Aedes albopictus (Diptera: Culicidae) are vectors for several arboviruses, including dengue, Zika virus and chikungunya virus. The primary method of controlling these diseases is controlling the vector population, often with insecticides. Insecticide resistance may impact the succe...

Descripción completa

Detalles Bibliográficos
Autores principales: Salinas, Wendy S., Feria-Arroyo, Teresa P., Vitek, Christopher J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398266/
https://www.ncbi.nlm.nih.gov/pubmed/34451456
http://dx.doi.org/10.3390/pathogens10080992
_version_ 1783744798051532800
author Salinas, Wendy S.
Feria-Arroyo, Teresa P.
Vitek, Christopher J.
author_facet Salinas, Wendy S.
Feria-Arroyo, Teresa P.
Vitek, Christopher J.
author_sort Salinas, Wendy S.
collection PubMed
description Aedes aegypti and Aedes albopictus (Diptera: Culicidae) are vectors for several arboviruses, including dengue, Zika virus and chikungunya virus. The primary method of controlling these diseases is controlling the vector population, often with insecticides. Insecticide resistance may impact the success of these efforts. We tested the effect of variable temperature exposures on susceptibility to insecticides by exposing adult A. aegypti and A. albopictus to different temperatures and tested their susceptibility to insecticides. We hypothesized that adults maintained at high temperatures would show increased susceptibility to insecticides relative to lower temperatures. Colony mosquitoes were hatched, reared to adulthood and then maintained in three temperature regimes that reflect average seasonal temperatures in the Rio Grande Valley, TX. Susceptibility to permethrin and deltamethrin was assessed using the CDC bottle bioassay method. Overall Aedes albopictus had higher susceptibility to all insecticides than Aedes aegypti. Mosquitoes kept at different temperatures exhibited differential susceptibility to insecticides. Low temperature exposed mosquitoes had decreased susceptibility while high temperature conditions resulted in increased mortality. Our results suggest public health officials must consider temperature effects when controlling mosquitoes with insecticides.
format Online
Article
Text
id pubmed-8398266
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83982662021-08-29 Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes Salinas, Wendy S. Feria-Arroyo, Teresa P. Vitek, Christopher J. Pathogens Communication Aedes aegypti and Aedes albopictus (Diptera: Culicidae) are vectors for several arboviruses, including dengue, Zika virus and chikungunya virus. The primary method of controlling these diseases is controlling the vector population, often with insecticides. Insecticide resistance may impact the success of these efforts. We tested the effect of variable temperature exposures on susceptibility to insecticides by exposing adult A. aegypti and A. albopictus to different temperatures and tested their susceptibility to insecticides. We hypothesized that adults maintained at high temperatures would show increased susceptibility to insecticides relative to lower temperatures. Colony mosquitoes were hatched, reared to adulthood and then maintained in three temperature regimes that reflect average seasonal temperatures in the Rio Grande Valley, TX. Susceptibility to permethrin and deltamethrin was assessed using the CDC bottle bioassay method. Overall Aedes albopictus had higher susceptibility to all insecticides than Aedes aegypti. Mosquitoes kept at different temperatures exhibited differential susceptibility to insecticides. Low temperature exposed mosquitoes had decreased susceptibility while high temperature conditions resulted in increased mortality. Our results suggest public health officials must consider temperature effects when controlling mosquitoes with insecticides. MDPI 2021-08-06 /pmc/articles/PMC8398266/ /pubmed/34451456 http://dx.doi.org/10.3390/pathogens10080992 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Salinas, Wendy S.
Feria-Arroyo, Teresa P.
Vitek, Christopher J.
Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title_full Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title_fullStr Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title_full_unstemmed Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title_short Temperatures Influence Susceptibility to Insecticides in Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Mosquitoes
title_sort temperatures influence susceptibility to insecticides in aedes aegypti and aedes albopictus (diptera: culicidae) mosquitoes
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398266/
https://www.ncbi.nlm.nih.gov/pubmed/34451456
http://dx.doi.org/10.3390/pathogens10080992
work_keys_str_mv AT salinaswendys temperaturesinfluencesusceptibilitytoinsecticidesinaedesaegyptiandaedesalbopictusdipteraculicidaemosquitoes
AT feriaarroyoteresap temperaturesinfluencesusceptibilitytoinsecticidesinaedesaegyptiandaedesalbopictusdipteraculicidaemosquitoes
AT vitekchristopherj temperaturesinfluencesusceptibilitytoinsecticidesinaedesaegyptiandaedesalbopictusdipteraculicidaemosquitoes