Distribuição e caracterização de diferentes populações de Triatoma brasiliensis Neiva, 1911 (Hemiptera, Reduviidae, Triatominae)

Cadernos de Saúde Pública

Jane Costa¹ 

[1],Fundação Oswaldo Cruz Instituto Oswaldo Cruz Departamento de EntomologiaRio de Janeiro RJ ,Brasil

关键词: Chagas Disease;    Triatominae;    Triatoma brasiliensis;    Insect Vectors;    Doença de Chagas;    Triatominae;    Triatoma brasiliensis;    Insetos Vetores;   

DOI  :  10.1590/S0102-311X2000000800011

来源: SciELO

【 摘 要 】

Triatoma brasiliensis Neiva, 1911 is now considered the most important Chagas disease vector in the semiarid zones of northeastern Brazil. Four distinct populations of T. brasiliensis have been identified by multidisciplinary studies: brasiliensis (Caicó, RN), melânica (Espinosa, MG), macromelasoma (Petrolina, PE), and juazeiro (Juazeiro, BA). By scanning electron microscopy of egg exochorion, each population displayed a distinct ornamentation pattern. The brasiliensis, macromelasoma, and juazeiro populations were found in both artificial ecotopes and the wild, while the melânica population was collected only in the wild. Isoenzymatic analysis detected phenotypic and genetic differences among them, with the melânica population being the most distinct. The brasiliensis population is the most important one from an epidemiological point of view, with the widest geographic distribution, the highest Trypanosoma cruzi infection rate, and occupying a wide variety of ecotopes.

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