Dispersal of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in an urban endemic dengue area in the State of Rio de Janeiro, Brazil

Abstract

Experimental releases of female Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus were performed in August and September 1999, in

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

“…CEP/ FIOCRUZ allowed mark, release and recapture experiments with Ae. aegypti females without cut proboscis as in Honório 29 , since this amputation might influence female host-seeking behavior and consequently dispersal patterns and survival rates. As a counterpart, we committed ourselves to suspend mosquito release if any dengue case was registered in the study area before or even during the experiment.…”

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

“…aegypti remains controversial because recorded dispersal distances have been variable. Honorio et al (2003) observed dispersal at distances between 100-800 m in an urban area of the state of Rio de Janeiro (RJ), Brazil. However, Harrington et al (2005), in experiments conducted in Puerto Rico and Thailand, found that most individuals disperse a few tens of meters and very few individuals disperse up to 500 m.…”

Efficiency of rubidium marking in Aedes albopictus (Diptera: Culicidae): preliminary evaluation on persistence of egg labeling, survival, and fecundity of marked female

“…These authors released gravid mosquitoes previously blood-fed on a solution of RbCl in citrated pig blood. Honório et al (2003) also estimated flight ranges of mosquitoes in an endemic dengue area in Rio de Janeiro (Lourenço-de-Oliveira et al 2002) monitoring eggs of released Ae. aegypti and Ae.…”

“…Accordingly, the concentration of 0.025 M RbCl diluted in an artificial blood meal was considered the ideal and thus used in the experiment described bellow. Coincidentally, this concentration was the same used in the field works by Reiter et al (1995) and Honório et al (2003).…”

“…Seven females (18.9%) that were fully engorged with a Rb-blood meal have never laid marked eggs. Honório et al (2003) reported that 9% of Ae. albopictus fed with blood containing RbCl failed in laying labeled eggs in the following five days.…”