5 research outputs found
Ecological niche modelling and differentiation between Rhodnius neglectus Lent, 1954 and Rhodnius nasutus Stål, 1859 (Hemiptera: Reduviidae: Triatominae) in Brazil
Ecological niche modelling was used to predict the potential geographical distribution of Rhodnius nasutus Stål and Rhodnius neglectus Lent, in Brazil and to investigate the niche divergence between these morphologically similar triatomine species. The distribution of R. neglectus covered mainly the cerrado of Central Brazil, but the prediction maps also revealed its occurrence in transitional areas within the caatinga, Pantanal and Amazon biomes. The potential distribution of R. nasutus covered the Northeastern Region of Brazil in the semi-arid caatinga and the Maranhão babaçu forests. Clear ecological niche differences between these species were observed. R. nasutus occurred more in warmer and drier areas than R. neglectus. In the principal component analysis PC1 was correlated with altitude and temperature (mainly temperature in the coldest and driest months) and PC2 with vegetation index and precipitation. The prediction maps support potential areas of co-occurrence for these species in the Maranhão babaçu forests and in caatinga/cerrado transitional areas, mainly in state of Piaui. Entomologists engaged in Chagas disease vector surveillance should be aware that R. neglectus and R. nasutus can occur in the same localities of Northeastern Brazil. Thus, the identification of bugs in these areas should be improved by applying morphometrical and/or molecular methods
Ecological niche modelling and differentiation between Rhodnius neglectus Lent, 1954 and Rhodnius nasutus Stål, 1859 (Hemiptera: Reduviidae: Triatominae) in Brazil
Ecological niche modelling and differentiation between Rhodnius neglectus Lent, 1954 and Rhodnius nasutus Stål, 1859 (Hemiptera: Reduviidae: Triatominae) in Brazil
Ecological niche modelling was used to predict the potential
geographical distribution of Rhodnius nasutus Stål and Rhodnius
neglectus Lent, in Brazil and to investigate the niche divergence
between these morphologically similar triatomine species. The
distribution of R. neglectus covered mainly the cerrado of Central
Brazil, but the prediction maps also revealed its occurrence in
transitional areas within the caatinga, Pantanal and Amazon biomes. The
potential distribution of R. nasutus covered the Northeastern Region of
Brazil in the semi-arid caatinga and the Maranhão babaçu
forests. Clear ecological niche differences between these species were
observed. R. nasutus occurred more in warmer and drier areas than R.
neglectus. In the principal component analysis PC1 was correlated with
altitude and temperature (mainly temperature in the coldest and driest
months) and PC2 with vegetation index and precipitation. The prediction
maps support potential areas of co-occurrence for these species in the
Maranhão babaçu forests and in caatinga/cerrado transitional
areas, mainly in state of Piaui. Entomologists engaged in Chagas
disease vector surveillance should be aware that R. neglectus and R.
nasutus can occur in the same localities of Northeastern Brazil. Thus,
the identification of bugs in these areas should be improved by
applying morphometrical and/or molecular methods