摘要:The closure of the Diama dam blocked the annual migration of native river prawns, Macrobrachium vollenhoveni, which prey on freshwater snails."* In 2012-13, M vollenhoveni were reintroduced to the local water system at an intervention site on the Senegal River. Compared with the control site, the prevalence of snail species and schistosomiasis transmission substantially decreased in the intervention site (appendix).» The Upstream Alliance is working to restock prawns through the Senegal River basin and construct fish ladders on dams to aid prawn migration. The reintroduction of M vollenhoveni as part of post-dam management could simultaneously provide sustainable schistosomiasis control and potentially, a source of food and livelihood for local fisheries, which were once a major source of income within the region.