Dengue vector (Aedes aegypti) larval habitats in an urban environment of Costa Rica analysed with ASTER and QuickBird imagery
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Date
Authors
Fuller, Douglas O.
Troyo Rodríguez, Adriana
Calderón Arguedas, Ólger
Beier, John C.
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Abstract
Dengue fever is transmitted mainly by the mosquito species
Aedes aegypti
, which
breeds in water-filled containers in tropical urban areas. In this study medium- and
high-resolution satellite (ASTER and QuickBird) imagery were used to map tree
cover and built-up surfaces in Puntarenas, Costa Rica, where dengue fever has
been endemic since 1993. Hard and soft image classification algorithms were used
to generate these variables, which were analysed with respect to vector habitat
distribution as measured by the potential mosquito habitats during the wet season
of 2006. A multiple linear regression model revealed that built-up surfaces derived
from ASTER imagery explained 63.6% of the variance in the number of larval
habitats found during the wet season when transmission and incidence of dengue
were highest. The results suggest that elements of urban structure such as built-up
surfaces may be used to predict the presence of an important disease vector within
urban areas and that medium-resolution satellite imagery may help to inform
future prevention and control strategies in Costa Rica and other countries where
dengue fever is endemic.
Description
Keywords
Dengue, Aedes aegypti, ASTER and QuickBird imagery, 571.986 Vectores de enfermedades
Citation
https://www.tandfonline.com/doi/abs/10.1080/01431160902865756