Volume 70, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


In the Msambweni area of the Kwale District in Kenya, an area endemic for potential intermediate-host snails were systematically surveyed in water bodies associated with human contact that were previously surveyed in the 1980s. , which accounted for 67% of the snails collected, was the only snail shedding cercariae. was the second most common snail (25%); lower numbers of and were also recovered. Infection with non- trematodes was found among all snail species. Rainfall was significantly associated with the temporal distribution of all snail species: high numbers of developed after extensive rainfall, followed, in turn, by increased 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 ( spp.) and several aquatic grass species appeared necessary for local colonization by or .


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  • Received : 30 Oct 2003
  • Accepted : 30 Dec 2003

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