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      Ecologic niche modeling and differentiation of populations of Triatoma brasiliensis neiva, 1911, the most important Chagas' disease vector in northeastern Brazil (hemiptera, reduviidae, triatominae).

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          Abstract

          Ecologic niche modeling has allowed numerous advances in understanding the geographic ecology of species, including distributional predictions, distributional change and invasion, and assessment of ecologic differences. We used this tool to characterize ecologic differentiation of Triatoma brasiliensis populations, the most important Chagas' disease vector in northeastern Brazil. The species' ecologic niche was modeled based on data from the Fundação Nacional de Saúde of Brazil (1997-1999) with the Genetic Algorithm for Rule-Set Prediction (GARP). This method involves a machine-learning approach to detecting associations between occurrence points and ecologic characteristics of regions. Four independent "ecologic niche models" were developed and used to test for ecologic differences among T. brasiliensis populations. These models confirmed four ecologically distinct and differentiated populations, and allowed characterization of dimensions of niche differentiation. Patterns of ecologic similarity matched patterns of molecular differentiation, suggesting that T. brasiliensis is a complex of distinct populations at various points in the process of speciation.

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          Author and article information

          Journal
          Am J Trop Med Hyg
          The American journal of tropical medicine and hygiene
          American Society of Tropical Medicine and Hygiene
          0002-9637
          0002-9637
          Nov 2002
          : 67
          : 5
          Affiliations
          [1 ] Entomology Branch, Centers for Disease Control and Prevention, Atlanta, Georgia 30341, USA. zgq6@cdc.gov
          Article
          10.4269/ajtmh.2002.67.516
          12479554
          52f7cd2d-fe7c-470c-8c3c-0388ae7280f3
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