期刊
JOURNAL OF MEDICAL ENTOMOLOGY
卷 58, 期 4, 页码 1908-1916出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/jme/tjab035
关键词
vector competence; Aedes aegypti; insecticide resistance; pyrethroid; Zika virus
资金
- Florida Department of Agriculture and Consumer Services [024378]
Mosquitoes' vector competence for pathogens is influenced by insecticide resistance, particularly with the global use of pyrethroids leading to resistance in species like Aedes aegypti. Different responses to pyrethroids affect susceptibility to arbovirus infection, highlighting the need to consider insecticide resistance in vector control programs during arbovirus transmission.
The vector competence of mosquitoes for pathogens has been shown to be influenced by the status of insecticide resistance in the mosquito population. However, to date, only two studies has explored the impact of insecticide resistance on arbovirus transmission. The global and widespread use of pyrethroids has led to the development of insecticide resistance in many mosquito species, including Aedes aegypti (Linnaeus) (Diptera: Culicidae), the primary vector of Zika virus. Strains of Ae. aegypti that were genetically similar, but responded differently to pyrethroid exposure, were developed using backcrossing techniques. These populations were orally infected with Zika virus and susceptibility to infection, disseminated infection, and transmission potential were evaluated. Analyses revealed differences in susceptibility to infection and disseminated infection between the pyrethroid susceptible and resistant strains of Ae. aegypti during the infection period. Here, we identify an additional challenge to that of widespread pyrethroid resistance. Specifically, resistance is associated with altered phenotypic traits that influence susceptibility to arbovirus infection and progression of infection in the mosquito, factors which ultimately influence risk of arbovirus transmission. These findings support the need to 1) consider insecticide resistance status during times of arbovirus transmission and 2) to implement insecticide resistance management/mitigation strategies in vector control programs.
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