Distribution patterns and cercarial shedding of Bulinus nasutus and other snails in the Msambweni area, Coast Province, Kenya.
Distribution patterns and cercarial shedding of Bulinus nasutus and other snails in the Msambweni area, Coast Province, Kenya.
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DOI：
10.4269/ajtmh.2004.70.449
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发表时间：
2004-04
期刊：
影响因子：
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通讯作者：
H. Kariuki;E. Muchiri;J. Clennon;Cara Pellegrini;J. Ouma;R. Sturrock;U. Kitron;P. Mungai;C. King;SAIDI TOSHA MALICK Ndzovu;J. Hamburger;Orit Hoffman;M. S. Brady
中科院分区：
文献类型：
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作者：
H. Kariuki;E. Muchiri;J. Clennon;Cara Pellegrini;J. Ouma;R. Sturrock;U. Kitron;P. Mungai;C. King;SAIDI TOSHA MALICK Ndzovu;J. Hamburger;Orit Hoffman;M. S. Brady
在肯尼亚夸莱区的Msambweni地区，埃及血吸虫的一个地方性地区，在与人类接触的水体中系统地调查了潜在的中间宿主蜗牛，这些水体以前曾在1980年代进行过调查。大泡螺（Bulinus（africanus）nasutus）是唯一一种释放S.埃及血吸虫尾蚴Lanistes purpureus是第二个最常见的蜗牛（25%）;也回收了少量的Bulinus forskalii和Melanoides tuberculata。非S.在所有螺种中均发现吸虫。降雨量与所有螺种的时间分布显著相关：大量的泡螺在大范围降雨后发育，其次是S。血蜱脱落。蜗牛的空间分布显着聚集在1公里的范围内，在400米的距离观察到的峰值聚类。睡莲（睡莲属）几种水生草类是B定殖的必要条件。nasutus或L.紫色的
In the Msambweni area of the Kwale District in Kenya, an area endemic for Schistosoma haematobium, potential intermediate-host snails were systematically surveyed in water bodies associated with human contact that were previously surveyed in the 1980s. Bulinus (africanus) nasutus, which accounted for 67% of the snails collected, was the only snail shedding S. haematobium cercariae. Lanistes purpureus was the second most common snail (25%); lower numbers of Bulinus forskalii and Melanoides tuberculata were also recovered. Infection with non-S. haematobium trematodes was found among all snail species. Rainfall was significantly associated with the temporal distribution of all snail species: high numbers of Bulinus nasutus developed after extensive rainfall, followed, in turn, by increased S. haematobium shedding. Spatial distribution of snails was significantly clustered over a range of up to 1 km, with peak clustering observed at a distance of 400 meters. Water lily (Nymphaea spp.) and several aquatic grass species appeared necessary for local colonization by B. nasutus or L. purpureus.