Higher genetic variation estimated by microsatellites compared to isoenzyme markers in Aedes aegypti from Rio de Janeiro

Genetic variability and heterogeneity of Venezuelan equine encephalitis virus vector Ochlerotatus taeniorhynchus (Diptera: Culicidae) populations of the Colombian Atlantic coast, based on microsatellite loci

“…In comparing this heterogeneity value with other population genetic works carried out with microsatellite markers, where the same statistic was evaluated, for example in A. aegypti from five districts of Rio de Janeiro, a high and significant value of 0.3304, P < 0.05, was obtained (da Costa-Ribeiro et al, 2006), indicating genetic differentiation among the populations analyzed. Likewise, in various species of Anopheles, high and significant ranges of Fst have been recorded among the mosquito populations (Moreno et al, 2007;Scarpassa and Conn, 2007;Mirabello et al, 2008), demonstrating in turn different degrees of genetic differentiation.…”

“…However, it is probable that when species-specific microsatellite loci are used, polymorphism levels could be different and higher compared with the results obtained using isoenzyme markers, such as those reported by da Costa-Ribeiro et al (2006), where microsatellite markers displayed higher polymorphism compared to isoenzyme loci established for A. aegypti populations from five districts in Rio de Janeiro.…”

Genetic structure of Aedes aegypti in the city of Córdoba (Argentina), a recently reinfested area

“…The number, type and proximity of suitable breeding sites and human population density significantly influenced the dispersal of mosquitoes. The few studies of genetic structure conducted in South American cities showed similar trends (Ocampo & Wesson 2004, da Costa-Ribeiro et al 2006. Córdoba (64º12'W 31º22'S; 1,250,000 inhabitants), the second largest city in Argentina, is an important commercial and industrial centre, as it is located at the crossroads of many national and international routes.…”

Calculating the survival rate and estimated population density of gravid Aedes aegypti (Diptera, Culicidae) in Rio de Janeiro, Brazil

“…It generally breeds in large artificial containers, has high daily survival rates, and moves across variable distances depending on the environment and climate, while its populations are highly genetically structured 3,4,5,6,7,8 . Differences in the degree of urbanization and in socio-economic status between adjacent blocks mean that Rio de Janeiro is a mosaic in terms of dengue epidemiology, where specific control activities for each area might be required 4,9,10 . Variations in the mosquito population size, daily survival rates, biting rates, and the duration of the extrinsic incubation period and/or dengue virus susceptibility within neighborhoods might elicit differential vectorial capacity, and consequently differences in disease transmission dynamics.…”