Occurrence of triatomines (Hemiptera, Reduviidae) and their natural infection by Trypanosoma cruzi (Chagas, 1909) in Boca do Moa community, Cruzeiro do Sul, Acre, Brazil

Abstract INTRODUCTION: Triatomines are insect vectors of Trypanosoma cruzi, the etiological agent of Chagas disease. METHODS: Triatomines were collected from households and by dissecting palm trees in the peri-urban areas of Cruzeiro do Sul (Acre); they were identified using a specific key and via genital analyses. Trypanosomatid infection was determined through microscopy and polymerase chain reaction. RESULTS: In total, 116 triatomines of the species Eratyrus mucronatus, Rhodnius pictipes, R. stali, and R. montenegrensis were collected, of which 13.8% were positive for T. cruzi. CONCLUSIONS: Four species of triatomines presented an infection rate above 13% in the Boca do Moa community.

摘要与引言：锥蝽（Triatomines）是克氏锥虫（Trypanosoma cruzi）的昆虫传播媒介，而克氏锥虫是恰加斯病（Chagas disease）的致病原。
方法：研究人员在巴西阿克里州南克鲁塞罗（Cruzeiro do Sul）近郊区域的住宅中，以及通过剖检棕榈树的方式采集锥蝽样本；采用专用分类检索表结合生殖器解剖分析对样本进行物种鉴定。通过显微镜检查及聚合酶链式反应（polymerase chain reaction，PCR）检测锥虫体感染状况。
结果：共计采集到4种锥蝽，总计116只，分别为尖刺锥蝽（Eratyrus mucronatus）、图画红猎蝽（Rhodnius pictipes）、斯塔尔红猎蝽（R. stali）以及蒙特内格罗红猎蝽（R. montenegrensis），其中13.8%的样本呈克氏锥虫感染阳性。
结论：在博卡杜莫阿（Boca do Moa）社区中，有4种锥蝽的克氏锥虫感染率超过13%。