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首页> 美国卫生研究院文献>Memrias do Instituto Oswaldo Cruz >Angiostrongylus cantonensis infection in molluscs in themunicipality of São Gonçalo a metropolitan area of Rio de Janeiro Brazil: role ofthe invasive species Achatina fulica in parasite transmissiondynamics
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Angiostrongylus cantonensis infection in molluscs in themunicipality of São Gonçalo a metropolitan area of Rio de Janeiro Brazil: role ofthe invasive species Achatina fulica in parasite transmissiondynamics

机译：广州软体动物中的广州圆管圆线虫感染巴西里约热内卢大都市圣贡萨洛市：寄生虫传播中的入侵种Achatina fulica动力学

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摘要

The aim of this study was to analyse the infection dynamics ofAngiostrongylus cantonensis in its possible intermediate hosts over two years in an urban area in the state of Rio de Janeiro where the presence ofA. cantonensis had been previously recorded in molluscs. Four of the seven mollusc species found in the study were exotic.Bradybaena similaris was the most abundant, followed byAchatina fulica, Streptaxis sp., Subulina octona, Bulimulus tenuissimus, Sarasinula linguaeformis and Leptinaria unilamellata. Only A. fulica and B. similaris were parasitised by A. cantonensis and both presented co-infection with other helminths. The prevalence of A. cantonensisin A. fulica was more than 50% throughout the study. There was an inverse correlation between the population size ofA. fulica and the prevalence of A. cantonensis and abundance of the latter was negatively related to rainfall. The overall prevalence of A. cantonensis in B. similariswas 24.6%. A. fulica was the most importantintermediary host of A. cantonensis in the studied areaandB. similaris was secondary in importance for A.cantonensis transmission dynamics.
机译：这项研究的目的是分析在里约热内卢州市区存在A的情况下，广州铁线虫在其可能的中间宿主中的感染动力学，历时两年。以前曾在软体动物中记录过广州。该研究发现的7个软体动物物种中有4个是外来物种，其中凤眼蕨（Bradybaena相似）最丰富，其次是褐化沙棘（Achatina fulica），链霉菌（Streptaxis sp。），Subulina octona，Bulimulus tenuissimus，Sarasinula linguaeformis和Leptinaria unilamellata。只有A. fulica和B.相似菌被A. cantonensis寄生，并且都与其他蠕虫共同感染。在整个研究过程中，广州A. fulica中广州曲霉的患病率超过50％。 A的人口规模之间存在反比关系。褐变和广州曲霉的流行以及后者的丰度与降雨成负相关。 B。中广州曲霉的总体患病率。相似度是24.6％。 A。 fulica 是最重要的研究范围内广州曲霉的中间宿主和 B。 相似性在 A中的重要性次之。广州输血动力学。

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