Fé Nelson Ferreira, Magalhães Laylah Kelre, Fé Flávio Augusto, Arakian Silvana Karina, Monteiro Wuelton Marcelo, Barbosa Maria das Graças Vale
Gerência de Entomologia, Fundação de Medicina Tropical do Amazonas, Manaus, AM.
Rev Soc Bras Med Trop. 2009 Nov-Dec;42(6):642-6. doi: 10.1590/s0037-86822009000600006.
Analysis of the distribution of triatomines is essential for formulating control strategies for Chagas disease in the Amazon region. In this paper, the results from trapping in wild and artificial environments in rural and urban localities in Manaus, Amazonas, are presented. Out of the 115 triatomines collected, 85 (73.9%) were of the species Rhodnius pictipes, 25 (21.7%) of Rhodnius robustus and five (4.4%) of Panstrongylus geniculatus. The rate of natural infection by flagellates was 5.9% for Rhodnius pictipes and 8% for Rhodnius robustus. None of the specimens of Panstrongylus geniculatus were infected. All of the infected specimens were from forest fragments in the urban zone. It was found that 106 insects (92.2%) were collected from the forest environment and nine (7.8%) in households, by means of the active search. The genus Rhodnius clearly predominated in the wild environment. The specimens of Panstrongylus geniculatus (all adults) were collected inside homes. There were no signs of domestic colonization by triatomines.
分析锥蝽的分布情况对于制定亚马逊地区恰加斯病的防控策略至关重要。本文展示了在亚马孙州玛瑙斯市农村和城市地区的野外及人工环境中设陷阱诱捕的结果。在收集到的115只锥蝽中，85只（73.9%）为图画罗蝽，25只（21.7%）为强壮罗蝽，5只（4.4%）为膝状锥猎蝽。图画罗蝽的鞭毛虫自然感染率为5.9%，强壮罗蝽为8%。膝状锥猎蝽的标本均未被感染。所有被感染的标本均来自城市地区的森林碎片。通过主动搜寻发现，106只昆虫（92.2%）是在森林环境中收集到的，9只（7.8%）是在家庭中收集到的。罗蝽属在野外环境中明显占主导地位。膝状锥猎蝽的标本（均为成虫）是在房屋内收集到的。没有锥蝽在家庭定殖的迹象。
