Zika Virus Infection Produces a Reduction on Aedes aegypti Lifespan but No Effects on Mosquito Fecundity and Oviposition Success
Autor: | Isabella Dias da Silveira, Gabriel Sylvestre, Márcio Galvão Pavan, Gabriela de Azambuja Garcia, Rafael Maciel-de-Freitas, Mariana Rocha David, Martha Thieme Petersen |
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Rok vydání: | 2018 |
Předmět: |
0301 basic medicine
Microbiology (medical) Veterinary medicine fecundity 030231 tropical medicine lcsh:QR1-502 Aedes aegypti vectorial capacity medicine.disease_cause survival Microbiology lcsh:Microbiology Zika virus 03 medical and health sciences Zika 0302 clinical medicine Pandemic medicine disease transmission biology fungi virus diseases Fecundity biology.organism_classification 030104 developmental biology Superinfection Vector (epidemiology) Disease transmission Fitness cost |
Zdroj: | Frontiers in Microbiology, Vol 9 (2018) |
ISSN: | 1664-302X |
Popis: | A Zika virus (ZIKV) pandemic started soon after the first autochthonous cases in Latin America. Although Aedes aegypti is pointed as the primary vector in Latin America, little is known about the fitness cost due to ZIKV infection. We investigated the effects of ZIKV infection on the life-history traits of Ae. aegypti females collected in three districts of Rio de Janeiro, Brazil (Barra, Deodoro, and Porto), equidistant ~25 km each other. Aedes aegypti mosquitoes were classified into infected (a single oral challenge with ZIKV) and superinfected (two ZIKV-infected blood meals spaced by 7 days each other). ZIKV infection reduced Ae. aegypti survival in two of the three populations tested, and superinfection produced a sharper increase in mortality in one of those populations. We hypothesized higher mortality with the presence of more ZIKV copies in Ae. aegypti females from Porto. The number of eggs laid per clutch was statistically similar between vector populations and infected and uninfected mosquitoes. Infection by ZIKV not affected female oviposition success. ZIKV infection impacted Ae. aegypti vectorial capacity by reducing its lifespan, although female fecundity remained unaltered. The outcome of these findings to disease transmission intensity still needs further evaluation. |
Databáze: | OpenAIRE |
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