Wisnivesky-Colli C, Gürtler R E, Solarz N D, Schweigmann N J, Pietrokovsky S M, Alberti A, Flo J
Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
Mem Inst Oswaldo Cruz. 1993 Jan-Mar;88(1):27-32. doi: 10.1590/s0074-02761993000100006.
Flight activity and invasion of houses by Triatoma sordida and T. guasayana were studied in the Province of Santiago del Estero, Argentina. Spontaneous findings of both species in houses were recorded from 1982 to 1989. Light trap collections were performed in 1982, 1983 and 1984, at the woods surrounding the settlements of Amamá (43 houses) and Trinidad (19 houses). Most of the 101 triatomines collected, were unfed and negative for Trypanosoma cruzi. T. guasayana predominated over T. sordida, and both appeared on the lighted screens between 19-31 min (mean 24) after dusk and the catch time was 30-45 min. Although entomological evaluation of 41 houses at Amamá performed in September 1985, just before insecticidal spraying, showed that Triatoma infestans predominated, adults of T. guasayana were collected in sleeping places, in 7 houses (17%). Most triatomines invading houses from then up to 1990 were flying T. guasayana (20/27) and females outnumbered males. Three non-infected T. guasayana females were fed on man and two T. guasayana males positive for "T. cruzi like" trypanosomes were unfed. Therefore, visiting hungry adults could transmit T. cruzi to people and introduce wild parasites to the domestic cycle. T. guasayana stands as the main potential substitute of T. infestans in the studied area, and it might play there the same role as T. sordida in Brazil.
在阿根廷圣地亚哥-德尔埃斯特罗省，对污色锥蝽和瓜氏锥蝽的飞行活动及侵入房屋情况进行了研究。1982年至1989年记录了这两种锥蝽在房屋中的自然发现情况。1982年、1983年和1984年，在阿马马（43户）和特立尼达（19户）定居点周边的树林中用灯光诱捕器进行了采集。采集到的101只锥蝽中，大多数未进食且克氏锥虫检测呈阴性。瓜氏锥蝽比污色锥蝽更为常见，二者均在黄昏后19 - 31分钟（平均24分钟）出现在亮着的纱窗上，捕获时间为30 - 45分钟。尽管1985年9月在阿马马41户房屋进行杀虫喷洒前的昆虫学评估显示，侵扰锥蝽占主导，但在7户房屋（17%）的睡眠场所采集到了瓜氏锥蝽成虫。从那时到1990年，侵入房屋的大多数锥蝽是飞行的瓜氏锥蝽（20/27），且雌虫数量多于雄虫。三只未感染的瓜氏锥蝽雌虫吸食了人血，两只“类克氏锥虫”检测呈阳性的瓜氏锥蝽雄虫未进食。因此，前来觅食的成虫可能会将克氏锥虫传播给人类，并将野生寄生虫引入家庭传播循环。瓜氏锥蝽是研究区域侵扰锥蝽的主要潜在替代物种，它在那里可能发挥与巴西污色锥蝽相同的作用。
