Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling
Although Brazil was declared free from Chagas disease transmission by the domestic vector Triatoma infestans, human acute cases are still being registered based on transmission by native triatomine species. For a better understanding of transmission risk, the geographic distribution of Brazilian tri...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Tropical Medicine |
| Online Access: | http://dx.doi.org/10.1155/2012/705326 |
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| author | Rodrigo Gurgel-Gonçalves Cléber Galvão Jane Costa A. Townsend Peterson |
| author_facet | Rodrigo Gurgel-Gonçalves Cléber Galvão Jane Costa A. Townsend Peterson |
| author_sort | Rodrigo Gurgel-Gonçalves |
| collection | DOAJ |
| description | Although Brazil was declared free from Chagas disease transmission by the domestic vector Triatoma infestans, human acute cases are still being registered based on transmission by native triatomine species. For a better understanding of transmission risk, the geographic distribution of Brazilian triatomines was analyzed. Sixteen out of 62 Brazilian species that both occur in >20 municipalities and present synanthropic tendencies were modeled based on their ecological niches. Panstrongylus geniculatus and P. megistus showed broad ecological ranges, but most of the species sort out by the biome in which they are distributed: Rhodnius pictipes and R. robustus in the Amazon; R. neglectus, Triatoma sordida, and T. costalimai in the Cerrado; R. nasutus, P. lutzi, T. brasiliensis, T. pseudomaculata, T. melanocephala, and T. petrocchiae in the Caatinga; T. rubrovaria in the southern pampas; T. tibiamaculata and T. vitticeps in the Atlantic Forest. Although most occurrences were recorded in open areas (Cerrado and Caatinga), our results show that all environmental conditions in the country are favorable to one or more of the species analyzed, such that almost nowhere is Chagas transmission risk negligible. |
| format | Article |
| id | doaj-art-a7fbb7995d9345b98dc562e2c5de337b |
| institution | Kabale University |
| issn | 1687-9686 1687-9694 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Tropical Medicine |
| spelling | doaj-art-a7fbb7995d9345b98dc562e2c5de337b2025-02-03T00:59:30ZengWileyJournal of Tropical Medicine1687-96861687-96942012-01-01201210.1155/2012/705326705326Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche ModelingRodrigo Gurgel-Gonçalves0Cléber Galvão1Jane Costa2A. Townsend Peterson3Laboratório de Parasitologia Médica e Biologia de Vetores, Área de Patologia, Faculdade de Medicina, Universidade de Brasília, Campus Universitário Darcy Ribeiro, 70904-970 Brasília, DF, BrazilLaboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Instituto Oswaldo Cruz, FIOCRUZ, 21045-900 Rio de Janeiro, RJ, BrazilLaboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, FIOCRUZ, 21045-900 Rio de Janeiro, RJ, BrazilBiodiversity Institute, The University of Kansas, Lawrence, KS 66045-7593, USAAlthough Brazil was declared free from Chagas disease transmission by the domestic vector Triatoma infestans, human acute cases are still being registered based on transmission by native triatomine species. For a better understanding of transmission risk, the geographic distribution of Brazilian triatomines was analyzed. Sixteen out of 62 Brazilian species that both occur in >20 municipalities and present synanthropic tendencies were modeled based on their ecological niches. Panstrongylus geniculatus and P. megistus showed broad ecological ranges, but most of the species sort out by the biome in which they are distributed: Rhodnius pictipes and R. robustus in the Amazon; R. neglectus, Triatoma sordida, and T. costalimai in the Cerrado; R. nasutus, P. lutzi, T. brasiliensis, T. pseudomaculata, T. melanocephala, and T. petrocchiae in the Caatinga; T. rubrovaria in the southern pampas; T. tibiamaculata and T. vitticeps in the Atlantic Forest. Although most occurrences were recorded in open areas (Cerrado and Caatinga), our results show that all environmental conditions in the country are favorable to one or more of the species analyzed, such that almost nowhere is Chagas transmission risk negligible.http://dx.doi.org/10.1155/2012/705326 |
| spellingShingle | Rodrigo Gurgel-Gonçalves Cléber Galvão Jane Costa A. Townsend Peterson Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling Journal of Tropical Medicine |
| title | Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling |
| title_full | Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling |
| title_fullStr | Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling |
| title_full_unstemmed | Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling |
| title_short | Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling |
| title_sort | geographic distribution of chagas disease vectors in brazil based on ecological niche modeling |
| url | http://dx.doi.org/10.1155/2012/705326 |
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