Triatomine and Trypanosoma cruzi discrete typing units distribution in a semi-arid area of northeastern Brazil.

摘要: The occurrence of triatomine species, their bloodmeal sources and the discrete typing units (DTUs) Trypanosoma cruzi isolated from them were determined in different municipalities state Rio Grande do Norte, Brazil. Triatomine captures carried out rural areas 23 municipalities. genotyping T. isolates was performed using mitochondrial cytochrome c oxidase subunit 2 (coii) gene, D7 region 24Sα rDNA, spliced leader intergenic (SL-IR). Five species captured, most frequent Triatoma brasiliensis (84.3%; 916/1086), which found 16 surveyed, infested all types environment investigated. TcI DTU mesoregions surveyed 51.5% (17/33) culture-positive samples. In contrast, TcII (9.1%; 3/33) detected Central mesoregion, while TcIII (27.3%; 9/33) mesoregions. geographic distribution spatial overlap DTUs inferred superposition radius ecological niche modelling. infected with three DTUs, including mixed infections. With regard to sources, DNA rodents triatomines either or TcIII, that domestic animals humans associated both single Our findings demonstrate are widely dispersed among our study area. association several mammalian hosts, as well overlapping suggests this may have an important role a vector anthropic sylvatic environments.