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Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission
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Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission
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Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission
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Journal Article
Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission
2018
Overview
Aedes albopictus
(Diptera: Culicidae) is an invasive mosquito, native to Asia, that has expanded its range worldwide. It is considered to be a public health threat as it is a competent vector of viruses of medical importance, including dengue, chikungunya, and Zika. Despite its medical importance there is almost no information on biologically important traits of
Ae. albopictus
in Argentina. We studied life cycle traits, demographic parameters and analyzed the competence of this mosquito as a virus vector. In addition, we determined the prevalence of
Wolbachia
strains in
Ae. albopictus
as a first approach to investigate the potential role of this bacteria in modulating vector competence for arboviruses. We observed low hatch rates of eggs, which led to a negative growth rate. We found that
Ae. albopictus
individuals were infected with
Wolbachia
in the F1 but while standard superinfection with
w
AlbA and
w
AlbB types was found in 66.7% of the females, 16.7% of the females and 62.5% of the males were single-infected with the
w
AlbB strain. Finally, despite high levels of infection and dissemination, particularly for chikungunya virus,
Ae. albopictus
from subtropical Argentina were found to be relatively inefficient vectors for transmission of both chikungunya and dengue viruses.
