Skip to main content Accessibility help

Studies of the relationships between Schistosoma nasale and S. spindale and their snail host Indoplanorbis exustus

  • J. de Bont (a1), J. Vercruysse (a1), D. van Aken (a1), V. R. Southgate (a2) and D. Rollinson (a2)...


Infectivity and cercarial production of Indoplanorbis exustus related to variation of miracidial dose (1, 4, 10 or 20) with Schistosoma nasale and S. spindale from Sri Lanka were studied. The intermediate host-parasite relationships of the two schistosome species showed marked differences under the conditions of observation recorded in this study. Prepatent death rates (PDR) were on average higher for S. spindale (30%) than for S. nasale (10%). The size of the miracidial dose to which snails had been exposed had no effect on PDR. The infection rates (IR) were on average higher for S. nasale (41%) compared with S. spindale (27%). Highest IR occurred after exposure to 4 miracidia in S. nasale infections (79%) and after exposure to 10 miracidia in S. spindale infections (6O%). The highest daily average cercarial production per snail was recorded for S. nasale at a level of 4 miracidia (1311), and for S. spindale at a level of 10 miracidia (1615). At low level (1 or 4 miracidia) of exposure, I. exustus showed a better compatibility with S. nasale than with S. spindale. An opposite tendency was observed at higher levels (10 or 20 miracidia) of exposure. Unsuccessful infections of Lymnaea luteola with either S. nasale or S. spindale indicate that this species is not involved in transmission.



Hide All
Chu, K. Y., Sabbaghian, H. & Massoud, J. (1966) Host-parasite relationship of Bulinus truncatus and Schistosoma haematobium in Iran. II. Effect of exposure dosage of miracidia on the biology of the snail host and the development of the parasites. Bulletin of the World Health Organization, 34, 121130.
Combes, C. (1985). Les transmissions vectorielles. L'analyse de la compatibilité schistosomes/mollusques vecteurs. Bulletin de la Société de Pathologie Exotique, 78, 742746.
De Bont, J., Van Aken, D., Vercruysse, J., Fransen, J., Southgate, V. R. & Rollinson, D. (1989) The prevalence and pathology of Schistosoma nasale Rao, 1933 in cattle in Sri Lanka. Parasitology, 98, 197202.
Dutt, S. C. & Srivastava, H. D. (1968) Studies on Schistosoma nasale Rao, 1933. II. Molluscan and mammalian hosts of the blood-fluke. Indian Journal of Veterinary Science, 38, 210216.
Frandsen, F. (1975). Host-parasite relationship of Bulinus forskali (Ehrenberg) and Schistosoma intercalatum Fisher 1934, from Cameroun. Journal of Helminthology, 49, 7384.
Frandsen, F. (1979) Studies of the relationship between Schistosoma and their intermediate hosts. I. The genus Bulinus and Schistosoma haematobium from Egypt. Journal of Helminthology, 53 1529.
Frandsen, F., Bennike, T. & Cridland, C. C. (1978). Studies on Schistosoma intercalatum Fisher, 1934 and its intermediate snail host in the Kisangani area, Zaïre. Annales de la Société Belge de Médecine Tropicale, 58, 2131.
Kumar, V. & De Burbure, G. (1986) Schistosomes of animals and man in Asia. Helminthological Abstracts (Series A), 55, 469480.
Lwambo, N. J. S., Upatham, E. S., Kruatrachue, M. & Viyanant, V. (1987) The host- parasite relationship between the Saudi Arabian Schistosoma mansoni and its intermediate and definitive hosts. I. S. mansoni and its local snail host Biomphalaria arabica. Southeast Asian Journal of Tropical Medicine and Public Health, 18, 156165.
Mouahid, A. & Combes, C. (1987) Genetic variability of Schistosoma bovis cercarial production according to miracidial dose. Journal of Helminthology, 61, 8994.
Mouahid, A. & Theron, A. (1987) Schistosoma bovis: Variability of cercarial production as related to the snail hosts: Bulinus truncatus, B. wrighti and Planorbarius metidjensis. International Journal for Parasitology, 17, 14311434.
Muraleedharan, K., Kumar, S. P., Hegde, K. S. & Alwar, V. S. (1975) Experimental infection of Indoplanorbis exustus (Deshayes) with miracidia of Schistosoma nasale Rao, 1933. Current Research, 4, 116117.
Pesigan, T. P., Hairston, N. G., Jauregui, J. J., Garcia, E. G., Santos, A. T., Santos, B. C. & Besa, A. A. (1958) Studies on Schistosoma japonicum infection in the Philippines. II. The molluscan host. Bulletin of the World Health Organization, 18, 481578.
Rao, M. A. N. (1934) A comparative study of Schistosoma spindalis, Montgomery, 1906 and Schistosoma nasalis, n.sp. Indian Journal of Veterinary Science and Animal Husbandry, 4, 128.
Sewell, R. B. S. (1922) Cercariae indicae. Indian Journal of Medical Research, 10 (suppl.), 1370.
Sturrock, B. M. & Sturrock, R. F. (1970) Laboratory studies of the host-parasite relationship of Schistosoma mansoni and Biomphalaria glabrata from St Lucia, West Indies. Annals of Tropical Medicine and Parasitology, 64, 357363.
Theron, A. (1985) Dynamiques de production des cercaires de Schistosoma mansoni en relation avec les variations de Ia dose miracidiale proposée au mollusque vecteur Biomphalaria glabrata. Annales de Parasitologie Humaine et Comparée, 60, 665674.
Webbe, G. & James, C. (1972) Host-parasite relationships of Bulinus globosus and B. truncatus with strains of Schistosoma haematobium. Journal of Helminthology, 46, 185199.


Studies of the relationships between Schistosoma nasale and S. spindale and their snail host Indoplanorbis exustus

  • J. de Bont (a1), J. Vercruysse (a1), D. van Aken (a1), V. R. Southgate (a2) and D. Rollinson (a2)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed