Assessment of fitness and vector competence of a New Caledonia wMel Aedes aegypti strain before field-release

新喀里多尼亚 wMel 埃及伊蚊种群在野外释放前的适应性和媒介能力评估

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作者:Nicolas Pocquet, Olivia O'Connor, Heather A Flores, Jordan Tutagata, Morgane Pol, David J Hooker, Catherine Inizan, Sylvie Russet, Johanna M Duyvestyn, Etiene C Pacidônio, Dominique Girault, Daniela da Silva Gonçalves, Marine Minier, Frédéric Touzain, Elodie Chalus, Kevin Lucien, Florie Cheilan, Tri

Background

Biological control programs involving Wolbachia-infected Aedes aegypti are currently deployed in different epidemiological settings. New Caledonia (NC) is an ideal location for the implementation and evaluation of such a strategy as the only proven vector for dengue virus (DENV) is Ae. aegypti and dengue outbreaks frequency and severity are increasing. We report the generation of a NC Wolbachia-infected Ae. aegypti strain and the

Significance

Our results demonstrated that the NC-wMel Ae. aegypti strain is a strong inhibitor of DENV, CHIKV, and ZIKV infection and prevents transmission of infectious viral particles in mosquito saliva. Furthermore, our NC-wMel Ae. aegypti strain induces reproductive cytoplasmic incompatibility with minimal apparent fitness costs and high maternal transmission, supporting field-releases in Noumea, NC.

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