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Revista Costarricense de Salud Pública

Print version ISSN 1409-1429


CALDERON ARGUEDAS, Olger; TROYO, Adriana; SOLANO, Mayra E  and  AVENDANO, Adrián. Culicidfauna associated to artificial containers in the neighborhood "La Carpio", Costa Rica. Rev. costarric. salud pública [online]. 2009, vol.18, n.1, pp.30-36. ISSN 1409-1429.

Objective: To determine the most frequent mosquito species in the neighborhood "La Carpio", first community of the Metropolitan Area of San José that suffered a dengue outbreak. Methods: Four larval surveys were performed. The evaluation included the analysis of all the indoor and outdoor containers that accumulated water. The larval samples were fixed in 70 % alcohol, cleared in lactophenol, and mounted in Hoyer’s medium for microscopic observation. The infestation was expressed as percent of infestation per type of positive container, and the associations between species and types of containers were evaluated by Chi Square tests of independence (α:0,05). Results: Six species of mosquitoes were found: Aedes aegypti, Culex quinquefasciatus, Cx. coronator, Cx. corniger, Cx. restuans, and Limatus durhamii. Ae. aegypti was the most ubiquitous species, showing the highest percent of infestation per type of container. The most important breeding sites were buckets, drums, tires, fixed holes, and miscellaneous objects. Shared habitats were observed in few cases. Discussion: The high infestation by Ae. aegypti represents a serious problem in the community and suggests that it is at risk for dengue outbreaks. The presence of Cx. quinquefasciatus and Cx. restuans may put this population at risk of infection by other emerging arboviruses such as the West Nile virus. The mosquito control campaigns must consider these other species of mosquitoes that can mask the eventual progress in the elimination of Ae. aegypti.

Keywords : Culicidae; Dengue; Biodiversity; Disease vectors; Costa Rica.

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