The influence of urban heat islands and socioeconomic factors on the spatial distribution of Aedes aegypti larval habitats

We addressed the potential associations among the temporal and spatial distribution of larval habitats of Aedes (Stegomyia) aegypti, the presence of urban heat islands and socioeconomic factors. Data on larval habitats were collected in Santa Bárbara d'Oeste, São Paulo, Brazil, from 2004 to 200...

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Published inGeospatial health Vol. 13; no. 1; p. 623
Main Authors De Azevedo, Thiago S, Bourke, Brian Patrick, Piovezan, Rafael, Sallum, Maria Anice M
Format Journal Article
LanguageEnglish
Published Italy PAGEPress Publications 08.05.2018
Subjects
Aedes - growth & development
Aedes aegypti
Animals
Brazil
Cities
Ecosystem
Hot Temperature
Larva - growth & development
Mosquito Vectors
Social Vulnerability Index
Socioeconomic factors
Spatial Analysis
Temperature
Urban heat island
Urban heat islands
Wavelets
Brazil
Social Vulnerability Index
Brazil
Spatial analysis
Wavelets
Aedes aegypti
Urban heat island
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Summary:We addressed the potential associations among the temporal and spatial distribution of larval habitats of Aedes (Stegomyia) aegypti, the presence of urban heat islands and socioeconomic factors. Data on larval habitats were collected in Santa Bárbara d'Oeste, São Paulo, Brazil, from 2004 to 2006, and spatial and temporal variations were analysed using a wavelet-based approach. We quantified urban heat islands by calculating surface temperatures using the results of wavelet analyses and grey level transformation from Thematic Mapper images (Landsat 5). Ae. aegypti larval habitats were geo-referenced corresponding to the wavelet analyses to test the potential association between geographical distribution of habitats and surface temperature. In an inhomogeneous spatial point process, we estimated the frequency of occurrence of larval habitats in relation to temperature. The São Paulo State Social Vulnerability Index in the municipality of Santa Barbára d'Oeste was used to test the potential association between presence of larval habitats and social vulnerability. We found abundant Ae. aegypti larval habitats in areas of higher surface temperature and social vulnerability and fewer larval habitats in areas with lower surface temperature and social vulnerability.
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ISSN:1827-1987
1970-7096
DOI:10.4081/gh.2018.623