Varejão José Benedito Malta, Santos Claudiney Biral dos, Rezende Helder Ricas, Bevilacqua Luiz Carlos, Falqueto Aloísio
Centro Biomédico, Universidade Federal do Espírito Santo, Vitória, ES.
Rev Soc Bras Med Trop. 2005 May-Jun;38(3):238-40. doi: 10.1590/s0037-86822005000300006. Epub 2005 May 4.
Some insects that are vectors of human diseases have accompanied man in his migrations throughout the world and breed exclusively in the proximity of human dwellings. The mosquito Aedes aegypti has been responsible for epidemics of dengue in Brazil and its presence also constitutes a serious risk for future outbreaks of urban yellow fever. The failure of campaigns to eradicate this species justifies the search for alternative breeding sites, which may be beyond the reach of present control measures. In this study the occurrence of Aedes aegypti breeding sites in native bromeliads on rocky slopes was investigated in five areas of Vitória, capital of the Brazilian State of Espírito Santo, ES. Water contained in the bromeliads was collected with the aid of a suction apparatus to search for culicid larvae. The degree of infestation of buildings in adjacent urban areas was evaluated simultaneously. Culicid larvae were found in bromeliads in four of the five areas investigated, Aedes aegypti being present in two areas. The presence of breeding sites in bromeliads was not related to indices of infestation of buildings in adjacent areas. Further studies are necessary to define whether breeding sites in bromeliads constitute primary foci of Aedes aegypti, or are a consequence of high infestation levels in urban areas.
一些作为人类疾病传播媒介的昆虫，在人类遍布全球的迁徙过程中一直相伴，并仅在人类住所附近繁殖。埃及伊蚊已在巴西引发登革热疫情，其存在也对未来城市黄热病的爆发构成严重风险。根除该物种的行动失败，促使人们寻找可能超出当前控制措施范围的替代繁殖地。在本研究中，对巴西圣埃斯皮里图州首府维多利亚五个地区岩石坡上原生凤梨科植物中埃及伊蚊繁殖地的情况进行了调查。借助抽吸装置收集凤梨科植物中的水，以寻找蚊幼虫。同时评估了相邻城市地区建筑物的感染程度。在所调查的五个地区中的四个地区的凤梨科植物中发现了蚊幼虫，其中两个地区存在埃及伊蚊。凤梨科植物中繁殖地的存在与相邻地区建筑物的感染指数无关。有必要进一步研究以确定凤梨科植物中的繁殖地是埃及伊蚊的主要疫源地，还是城市地区高感染水平的结果。
