Exposure to Pseudomonas spp. increases Anopheles gambiae insecticide resistance in a host-dependent manner.

Autor: Silva LM; Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland. luis.silva@ubc.ca.; Department of Zoology, University of British Columbia, Vancouver, Canada. luis.silva@ubc.ca., Acerbi G; Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland.; Department of Evolutionary and Integrative Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany., Amann M; Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland., Koella JC; Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Nov 30; Vol. 14 (1), pp. 29789. Date of Electronic Publication: 2024 Nov 30.
DOI: 10.1038/s41598-024-78288-4
Abstrakt: The microbiota of mosquitoes influences many aspects of their biology, including developmental processes, mating and sexual reproduction, immune functions, and refractoriness to pathogens. Here, we considered their role in resistance against insecticides. In particular, we assessed how larval infection of a permethrin-resistant and a sensitive colony of Anopheles gambiae by four strains belonging to three different Pseudomonas species affects several life history traits and the impact of the insecticide on adult mortality. Our data showed that all four Pseudomonas strains persisted in adults until death. The bacteria increased the likelihood that mosquitoes survived 24 h after exposure to permethrin by up to twofold. The impact of the bacteria depended on the bacterial strains and the mosquito colony: in the resistant colony, all bacteria increased survival by about twofold, while in the sensitive colony, only two of the four strains increased survival. The benefit concerning insecticide resistance came with little to no impact on the other traits (i.e., larval mortality, developmental time and adult longevity). Altogether, our results highlight the importance of considering environmental microbial exposure and mosquito microbial communities in epidemiological and vector-control studies, while also suggesting a possible role for Pseudomonas spp. as a symbiont in A. gambiae.
Competing Interests: Declarations. Competing interests: The authors declare that they have no competing interests.
(© 2024. The Author(s).)
Databáze: MEDLINE
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