Satellite observation to assess dengue due to Aedes aegypti and Aedes albopictus in a subtropical city of Argentina

MIA ELISA MARTIN; ANA CAROLINA ALONSO; JANINNA FARAONE; MARINA STEIN; ELIZABET LILIA ESTALLO

MEDICAL AND VETERINARY ENTOMOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2022 vol. 37 p. 27 - 36

0269-283X

Earth observation environmental features measured through remote sensing and models of vector mosquitoes species Aedes aegypti and Ae. albopictus provide an advancement with regards to dengue risk in urban environments of subtropical areas of Argentina. We aim to estimate the effect of landscape coverage and spectral indices (Normalized Difference Vegetation Index-NDVI, Normalized Difference Water Index-NDWI, and Normalized Difference Built-up Index-NDBI) on the larvae abundance of Ae. aegypti and Ae. albopictus in Eldorado, Misiones, Argentina using remote satellite sensors. Larvae of these species were collected monthly (June 2016 to April 2018), in four environments: tire repair shops, cemeteries, dwellings, and an urban natural park. The proportion of landscape coverage (water, urban areas, bare soil, low vegetation and high vegetation) were determined from the supervised classification of Sentinel-2 images and spectral indices, calculated .We developed spatial models of both vector species by Generalized Linear Mixed Models. The model´s results showed that Ae. aegypti larvae abundance was better modeled by NDVI minimum values, NDBI maximum values and the interaction of them. For Ae. albopictus proportion of bare soil, low vegetation and the interaction between both variables explained better the abundance.