Ndione R A, Diop D, Riveau G, Ba C T, Jouanard N
Centre de recherche biomédicale Espoir pour la santé, BP 226 Saint Louis, Sénégal, Département de biologie animale, Université Cheikh, Dakar, Sénégal.
Centre de recherche biomédicale Espoir pour la santé, BP 226 Saint Louis, Sénégal.
Med Sante Trop. 2018 May 1;28(2):158-164. doi: 10.1684/mst.2018.0795.
The implementation and expansion of development projects (dams and irrigation schemes) in the Senegal River valley have led to a significant proliferation of snails. We conducted a one-year (2014) study project, monitoring their density in the commune of Richard Toll, to assess the role of environmental parameters on mollusc population dynamics. Four species involved in the transmission of human schistosomiasis were found: Bulinus globosus, B. truncatus, B. senegalensis, and Biomphalaria pfeifferi. Among the intermediate hosts, B. truncatus is the most abundant species, followed by B. globosus. Snail density depends on the nature of the water point but also on environmental parameters such as vegetation. This study showed that vegetation, water level (flood), and flow velocity influence the dynamics of the snail populations that are intermediate hosts of human schistosomes.
塞内加尔河谷发展项目（水坝和灌溉工程）的实施与扩张导致蜗牛大量繁殖。我们开展了一项为期一年（2014年）的研究项目，在理查德托尔镇监测蜗牛密度，以评估环境参数对软体动物种群动态的作用。发现了四种参与人类血吸虫病传播的物种：球拟沼螺、截形拟沼螺、塞内加尔拟沼螺和费氏双脐螺。在中间宿主中，截形拟沼螺是数量最多的物种，其次是球拟沼螺。蜗牛密度不仅取决于取水点的性质，还取决于植被等环境参数。这项研究表明，植被、水位（洪水）和流速会影响作为人类血吸虫中间宿主的蜗牛种群动态。
