PLoS Neglected Tropical Diseases (2015) 9 (2 - e0003462)

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B. Katherine Poole-Smith, Ryan R. Hemme, Mark Delorey, Gilberto Felix, Andrea L. Gonzalez, Manuel Amador, Elizabeth A. Hunsperger and Roberto Barrera (2015)
Comparison of vector competence of Aedes mediovittatus and Aedes aegypti for Dengue virus: Implications for dengue control in the Caribbean
PLoS Neglected Tropical Diseases 9 (2 - e0003462)
Abstract:
Background
Aedes mediovittatus mosquitoes are found throughout the Greater Antilles in the Caribbean and often share the same larval habitats with Ae. aegypti, the primary vector for dengue virus (DENV). Implementation of vector control measures to control dengue that specifically target Ae. aegypti may not control DENV transmission in Puerto Rico (PR). Even if Ae. aegypti is eliminated or DENV refractory mosquitoes are released, DENV transmission may not cease when other competent mosquito species like Ae. mediovittatus are present. To compare vector competence of Ae. mediovittatus and Ae. aegypti mosquitoes, we studied relative infection and transmission rates for all four DENV serotypes.
Methods
To compare the vector competence of Ae. mediovittatus and Ae. aegypti, mosquitoes were exposed to DENV 1–4 per os at viral titers of 5–6 logs plaque-forming unit (pfu) equivalents. At 14 days post infectious bloodmeal, viral RNA was extracted and tested by qRT-PCR to determine infection and transmission rates. Infection and transmission rates were analyzed with a generalized linear model assuming a binomial distribution.
Results
Ae. aegypti had significantly higher DENV-4 infection and transmission rates than Ae. mediovittatus.
Conclusions
This study determined that Ae. mediovittatus is a competent DENV vector. Therefore dengue prevention programs in PR and the Caribbean should consider both Ae. mediovittatus and Ae. aegypti mosquitoes in their vector control programs.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Roberto Barrera

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Aedes aegypti Puerto Rico
Aedes mediovittatus Puerto Rico
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