REFERENCES
- Betterton, C. (1984). Spatiotemporal distributional patterns of Bulinus rohlfsi (Clessin), B. forskalii (Ehrenberg) and B. senegalensis Müller in newly irrigated areas in northern Nigeria. Journal of Molluscan Studies, 50, 137–152.
- Brown, D. S. & Kristensen, T. K. (1991). A Field Guide to African Freshwater Snails. 1. West African Species. Charlottenlund: Danish Bilharziasis Laboratory.
- Chaine, J. P. & Malek, E. A. (1983). Urinary schistosomiasis in the Sahelian region of the Senegal River basin. Tropical and Geographical Medicine, 35, 249–256.
- Cridland, C. C. (1967). Resistance of Bulinus (Physopsis) globosus, Bulinus (Ph.) africanus, Biomphalaria pfeifferi and Lymnae natalensis to experimental desiccation. Bulletin of the World Health Organization, 36, 507–513.
- Deme, I. (1993). Epidémiologie des bilharzioses humaines et animales dans le delta du fleuve Sénégal: étude malacologique. M.Sc. thesis, Institut de Médecine Tropicale Prince Leopold, Anvers.
- Diaw, O. T. (1980). Trématodoses dans le delta du Sénégal et le lac de Guiers. I. Etude de la répartition des mollusques d'eau douce. Bulletin de L'I.F.A.N, Série A, 42, 709–722.
- Donnelly, F. A., Appleton, C. C. & Schutte, C. H. J. (1983). The influence of salinity on certain aspects of the biology of Bulinus (Physopsis) africanus. International Journal for Parasitology, 13, 539–545.
- Frandsen, F. & Christensen, N. Ø. (1984). An introductory guide to the identification of cercariae from African freshwater snails with special reference to cercariae of trematode species of medical and veterinary importance. Acta Tropica, 41, 181–203.
- Loreau, M. & Baluku, B. (1991). Shade as means of ecological control of Biomphalaria pfeifferi. Annals of Tropical Medicine and Parasitology, 85, 443–446.
- Malek, E. A. & Chaine, J. P. (1981). Freshwater snails of the Senegal River basin, West Africa. The Nautilus, 95, 193–198.
- O'Keefe, J. H. (1985). Population biology of the freshwater snail Bulinus globosus on the Kenya coast. 1. Population fluctuations in relation to climate. Journal of Applied Ecology, 22, 73–84.
- Oyeyi, T. I. & Ndifou, G. T. (1990). A note on the post-aestivation biology of Bulinus rohlfsi (Clessin), an intermediate host of Schistosoma haematobium (Bilharz) in northern Nigeria. Annals of Tropical Medicine and Parasitology, 84, 535–536.
- Picquet, M., Ernould, J.-C., Vercruysse, J., Southgate, V. R., Mbaye, A., Sambou, B., Niang, M. & Rollinson, D. (1996). The epidemiology of human schistosomiasis in the Senegal River basin. Transactions of the Royal Society of Tropical Medicine and Hygiene, 90, 340–346.
- Raes, D. & Sy, B. (1992). Analyse de la Pluviométrie el de l'Evapotranspiration dans la Zone du Delta du Fleuve Sénégal. Bulletin Technique No. 5. Ndiaye, Senegal: Société d'Aménagement et d'Exploitation des Terres du Delta.
- Rollinson, D., de Clercq, D., Sacko, M., Traore, M., Sene, M., Southgate, V. R. & Vercruysse, J. (1997). Observations on compatibility between Bulinus truncatus and Schistosoma haematobium in the Senegal River basin. Annals of Tropical Medicine and Parasitology, 91, 371–378.
- Southgate, V. R., Rollinson, D., Ross, G. C., Knowles, R. J. & Vercruysse, J. (1985). On Schistosoma curassoni, S. haematobium and S. bovis from Senegal: development in Mesocricetus auratus, compatibility with species of Bulinus and their enzymes. Journal of Natural History, 19, 1249–1267.
- Talla, I., Kongs, A., Verlé., P., Belot, J., Sarr, S. & Coll, A. M. (1990). Outbreak of intestinal schistosomiasis in the Senegal River basin. Annales de la Société Belge de Médecine Tropicale, 70, 173–180.
- Vercruysse, J., Southgate, V. R. & Rollinson, D. (1985). The epidemiology of human and animal schistosomiasis in the Senegal River basin. Acta Tropica, 42, 249–259.
- Vercruysse, J., Southgate, V. R., Rollinson, D., de Clercq, D., Sacko, M., de Bont, J. & Mungomba, L. M. (1994). Studies on transmission and schistosome interactions in Senegal, Mali and Zambia. Tropical and Geographical Medicine, 46, 220–226.
- Verlé, P., Stelma, F., Desreumaux, P., Dieng, A., Diaw, O., Kongs, A., Niang, M., Sow, S., Talla, I., Sturrock, R. F., Gryseels, B. & Capron, A. (1994). Preliminary study of urinary schistosomiasis in a village in the delta of the Senegal river basin, Senegal. Transactions of the Royal Society of Tropical Medicine and Hygiene, 88, 401–405.