Factors related to Aedes aegypti (Diptera: Culicidae) populations and temperature determine differences on life-history traits with regional implications in disease transmission
MUTTIS, EVANGELINA; BALSALOBRE, AGUSTIN; CHUCHUY, AILEN; MANGUDO CAROLINA; CIOTA, ALEXANDER; MICIELI, MARIA VICTORIA
JOURNAL OF MEDICAL ENTOMOLOGY
ENTOMOLOGICAL SOC AMER
Lugar: Lanham; Año: 2018
Aedes aegypti (L.) (Diptera: Culicidae) is a vector of manymedically significant viruses in the Americas, including dengue virus,chikungunya virus and Zika virus. Traits such as longevity, fecundity andfeeding behavior contribute to the ability of Ae. aegypti to serve as a vector of these pathogens. Both localenvironmental factors and population genetics could contribute to variabilityin these traits. We performed a comparative study of Ae. aegypti populationsfrom four geographically and environmentally distinct collection sites in Argentinain which the cohorts from each population were held at temperature values simulatinga daily cycle, with an average of 25 ºC in order to identify the influence of populationon life-history traits. In addition, we performed the study of the same populationsheld at a daily temperature cycle similar to that of the surveyed areas. Accordingto the results, Aguaray is the most outstanding population, showing featuresthat are important to achieve high fitness. Whereas La Plata gathers featuresconsistent with low fitness. Iguazu was outstanding in blood feeding rate whilePosadas?s population showed intermediate values. Our results also demonstratethat climate change could differentially affect unique populations, and thatthese differences have implications for the capacity for Ae. aegypti to act as vectors for medically important arboviruses.