Paraense W L, Corrêa L R
Mem Inst Oswaldo Cruz. 1985 Jul-Sep;80(3):259-62. doi: 10.1590/s0074-02761985000300001.
A sample of Biomphalaria amazonica from Porto Velho, Rondônia state, was exposed to miracidia of Schistosoma mansoni (SJ2 strain) from São José dos Campos, São Paulo state (five miracidia per snail). Water freshly taken from the snails' breeding place was used to make sure that its quality was compatible with hatching of miracidia and their penetration into the snails. The resulting infection rate was 3.5%, as against 45% in B. tenagophila controls. In comparison with the controls, B. amazonica, besides a lower infection rate, showed a longer prepatent period and a lower cercarial production. These characteristics seem to indicate that it is a poor host of S. mansoni, like B. straminea, but it should be considered that, this notwithstanding, the latter is admittedly a good vector of the parasite in hyperendemic areas of northeastern Brazil. These results point to the possibility of introduction of schistosomiasis mansoni into the western Amazonian region, where B. amazonica is widespread.
来自朗多尼亚州波多韦柳的亚马逊泡螺样本，接触了来自圣保罗州圣若泽杜斯坎普斯的曼氏血吸虫（SJ2株）的毛蚴（每只螺5个毛蚴）。使用从螺类繁殖地新取的水，以确保其质量与毛蚴孵化及其侵入螺体相适应。结果感染率为3.5%，而嗜眼泡螺对照组的感染率为45%。与对照组相比，亚马逊泡螺除感染率较低外，还表现出较长的潜伏期和较低的尾蚴产量。这些特征似乎表明，它像稻草泡螺一样是曼氏血吸虫的不良宿主，但应该考虑到，尽管如此，后者在巴西东北部高度流行地区无疑是该寄生虫的良好传播媒介。这些结果表明，在亚马逊泡螺广泛分布的西部亚马逊地区，有可能引入曼氏血吸虫病。
