Steindel M, Toma H K, de Carvalho Pinto C J, Grisard E C
Departamento de Microbiologia e Parasitologia-CCB, Universidade Federal de Santa Catarina, Florianópolis, Brasil.
Rev Inst Med Trop Sao Paulo. 1994 Jan-Feb;36(1):43-50.
The aim of this work was to verify the colonization of Panstrongylus megistus on artificial ecotopes in Florianópolis, in the Santa Catarina Island, South Brazil. For this purpose 443 houses of the Lagoa district and 779 house annexes (524 chicken-houses, 46 corrals and 209 storage-houses) in 9 different places were examined from 1985 to 1992. These ecotopes, which include ceilings and basements, were checked after application of dislodging liquid (Pirisa 5%). Colonization by P. megistus was verified in two houses, three chicken-houses and one storage-house of the Lagoa district, where eggs, nymphs and adults were collected. To verify local reports of P. megistus occurrence, another two houses and one school were investigated. The colonization at all of these places was confirmed. In the 9 artificial ecotopes examined, 559 eggs, 305 nymphs and 24 adults were collected. The infection rate of P. megistus by Trypanosoma cruzi was 55.3% (182/329). A similar infection rate of 56.5% (78/138) was obtained in adults of P. megistus from sylvatic ecotopes and in adults captured in the houses by the inhabitants between 1983 to 1991. Precipitin tests revealed blood from just one source in 94.0% of the insects (170/181). Human blood was found in 80.6% (25/31) of the adults and in 5.8% (1/17) of the nymphs captured in the houses. These results suggest the need to ally serious epidemiologic vigilance to the effort of the inhabitants in order to avoid the risk of domiciliation of P. megistus in the houses.
这项工作的目的是验证大锥猎蝽在巴西南部圣卡塔琳娜岛弗洛里亚诺波利斯的人工生态环境中的定殖情况。为此，在1985年至1992年期间，对拉戈阿区的443所房屋以及9个不同地点的779个房屋附属建筑（524个鸡舍、46个畜栏和209个仓库）进行了检查。这些生态环境包括天花板和地下室，在喷洒驱赶液（5%的皮里萨）后进行检查。在拉戈阿区的两所房屋、三个鸡舍和一个仓库中证实了大锥猎蝽的定殖，在这些地方采集到了虫卵、若虫和成虫。为了核实有关大锥猎蝽出现的当地报告，还对另外两所房屋和一所学校进行了调查。所有这些地方都证实有大锥猎蝽定殖。在检查的9个人工生态环境中，采集到559枚虫卵、305只若虫和24只成虫。大锥猎蝽感染克氏锥虫的比率为55.3%（182/329）。在1983年至1991年期间，从野生生态环境中采集的大锥猎蝽成虫以及居民在房屋中捕获的成虫中，也获得了类似的感染率，为56.5%（78/138）。沉淀素试验显示，94.0%的昆虫（170/181）的血液来自单一来源。在房屋中捕获的成虫中，80.6%（25/31）检测到人类血液，若虫中这一比例为5.8%（1/17）。这些结果表明，需要将严格的流行病学监测与居民的努力相结合，以避免大锥猎蝽在房屋中定殖的风险。
