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Compatibility of Schistosoma haematobium, S. intercalatum and their hybrids with Bulinus truncatus and B. forskalii

Published online by Cambridge University Press:  09 October 2003

B. L. WEBSTER  and
V. R. SOUTHGATE
B. L. WEBSTER
Affiliation:
Department of Zoology, Biomedical Parasitology Division, Wolfson Wellcome Biomedical Laboratories, The Natural History Museum, Cromwell Road, South Kensington, London SW7 5BD
V. R. SOUTHGATE
Affiliation:
Department of Zoology, Biomedical Parasitology Division, Wolfson Wellcome Biomedical Laboratories, The Natural History Museum, Cromwell Road, South Kensington, London SW7 5BD
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Abstract

Schistosoma haematobium and S. intercalatum readily hybridize with each other producing generations of viable hybrid offspring. Experiments were designed to investigate the infectivity and viability of the S. haematobium×S. intercalatum F1 and F2 hybrid larvae in their two intermediate snail hosts compared with the parental species. Analysis of the data obtained suggested that the S. haematobium [male ]×S. intercalatum [female] F1 hybrid miracidia were more infective to Bulinus truncatus than to B. forskalii, and also more infective to B. truncatus compared with the parental S. haematobium miracidia. This hybrid was also observed to have a greater cercarial productivity from both intermediate hosts and these cercariae were shown to be more infectious and to have a longer longevity compared with the cercariae of S. haematobium, S. intercalatum and the S. haematobium [female]×S. intercalatum [male ] F1 hybrid cercariae. The S. haematobium [female]×S. intercalatum [male ] F1 hybrid was shown not to be very successful in all stages of the investigations. The results indicate that the S. haematobium [male ]×S. intercalatum [female] F1 hybrid may have many reproductive advantages over the reciprocal hybrid and the parental schistosome species. The significance of the results is discussed in relation to the epidemiological consequences occurring in Loum, Cameroon, and other areas where S. haematobium and S. intercalatum are sympatric and able to hybridize.

Keywords

compatibilitySchistosoma haematobiumSchistosoma intercalatumhybridsBulinus truncatusBulinus forskalii
Type
Research Article
Information
Parasitology , Volume 127 , Issue 3 , September 2003 , pp. 231 - 242
Copyright
© 2003 Cambridge University Press

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References

REFERENCES

BURCHARD, G. D. & KERN, P. (1985). Probable hybridisation between S. intercalatum and S. haematobium in western Gabon. Tropical Geography and Medicine 37, 119–123.Google Scholar
COSGROVE, C. & SOUTHGATE, V. R. (2003). Competitive mating interactions between Schistosoma haematobium and S. intercalatum (Lower Guinea strain). Parasitology Research 89, 238–241.Google Scholar
DOUMENGE, J. P., MOTT, K. E., CHEUNG, C., VILLENAVE, D., CHAPIUS, O., PERRIN, M. F. & REAUD-THOMAS, G. (1987). Atlas de la répartition mondiale des schistosomiasis/Atlas of the global distribution of Schistosomiasis. Talence, CEGET-CNRS; Genève, OMS/World Health Organisation; Talence, PUB, pp. 1–400.
GANDON, S. & MICHALAKIS, Y. (1996). Temporal variability and local adaptation. Trends in Ecology and Evolution 11, 431.CrossRefGoogle Scholar
LE ROUX, P. L. (1954). Schistosoma spp. recovered experimentally, through snails, mice and hamsters from a human subject of urinary schistosomiasis. Transactions of the Royal Society of Tropical Medicine and Hygiene 48, 281.Google Scholar
MORAND, S., MANNING, S. D. & WOOLHOUSE, M. E. J. (1996). Parasite-hosts coevolution and geograghic patterns of parasite infectivity and host suceptibility. Proceedings of the Royal Society of London, B 263, 119–128.CrossRef
MORAND, S., SOUTHGATE, V. R. & JOURDANE, J. (2002). A model to explain the replacement of Schistosoma intercalatum by Schistosoma haematobium and the hybrid S. intercalatum/S. haematobium in areas of sympatry. Parasitology 124, 401–408.Google Scholar
MUTANI, A., CHRISTENSEN, N. Ø. & FRANDSEN, F. (1985). A study of the biological characteristics of a hybrid line between male Schistosoma haematobium (Dar es Saleem, Tanzania) and female S. intercalatum (Edea, Cameroun). Acta Tropica 42, 319–331.Google Scholar
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.CrossRefGoogle Scholar
RATARD, R. C., KOUEMENI, L. E., EKANI BESSALA, M. L., NDAMKOU, C. N., GREER, G. J., SPILSBURY, J. & CLINE, B. L. (1990). Human schistosomiasis in Cameroon. I. Distribution of schistosomiasis. American Journal of Tropical Medicine and Hygiene 42, 561–572.CrossRefGoogle Scholar
RATARD, R. C. & GREER, G. J. (1991). A new focus of Schistosoma haematobium/S. intercalatum hybrid in Cameroon. American Journal of Tropical Medicine and Hygiene 45, 332–338.CrossRefGoogle Scholar
ROLLINSON, D. & SOUTHGATE, V. R. (1985). Schistosome and snail populations: genetic variability and parasite transmission. In Ecology and Genetics in Host–Parasite Interactions (ed. Rollinson, D. & Anderson, R. M.), pp. 99–109. Academic Press, London.
SOUTHGATE, V. R. (1978). On factors possibly restricting the distribution of Schistosoma intercalatum Fisher, 1934. Zeitschrift für Parasitenkunde 56, 183–193.CrossRefGoogle Scholar
SOUTHGATE, V. R., JOURDANE, J. & TCHUEM TCHUENTÉ, L. A. (1998). Recent studies on reproductive biology of the schistosomes and their relevance to speciation in the Digenea. International Journal for Parasitology 28, 1159–1172.CrossRefGoogle Scholar
SOUTHGATE, V. R. & ROLLINSON, D. (1980). Interactions of Schistosoma haematobium and S. intercalatum in Loum, Cameroon. Proceedings of the Third European Multicolloqium of Parasitology, Cambridge, p. 24.
SOUTHGATE, V. R., ROLLINSON, D., ROSS, G. C. & KNOWLES, R. J. (1982). Mating behaviour in mixed infections of Schistosoma haematobium and S. intercalatum. Journal of Natural History 16, 491–496.CrossRefGoogle Scholar
SOUTHGATE, V. R., TCHUEM TCHUENTÉ, L. A., VERCRUYSSE, J. & JOURDANE, J. (1995). Mating Behaviour in mixed infections of Schistosoma haematobium and S. mattheei. Parasitology Research 81, 651–656.CrossRefGoogle Scholar
SOUTHGATE, V. R., VAN WIJK, H. B. & WRIGHT, C. A. (1976). Schistosomiasis at Loum. Cameroun; Schistosoma haematobium, S. intercalatum and their natural hybrid. Zeitschrift für Parasitenkunde 49, 145–159.Google Scholar
TAYLOR, M. G. (1970). Hybridisation experiments on five species of African schistosomes. Journal of Helminthology 44, 253–314.CrossRefGoogle Scholar
TCHUEM TCHUENTÉ, L. A., IMBERT-ESTABLET, D., DELAY, B. & JOURDANE, J. (1993). Choice of mate, a reproductive isolating mechanism between Schistosoma intercalatum and Schistosoma mansoni in mixed infections. International Journal for Parasitology 23, 179–185.CrossRefGoogle Scholar
TCHUEM TCHUENTÉ, L. A., MORAND, S., IMBERT-ESTABLET, D., DELAY, B. & JOURDANE, J. (1996). Competitive exclusion in human schistosomes: the restricted distribution of Schistosoma intercalatum. Parasitology 113, 129–136.CrossRefGoogle Scholar
TCHUEM TCHUENTÉ, L. A., SOUTHGATE, V. R., NIJIOKOU, F., NIJINÉ, T., KOUEMENI, E. & JOURDANE, J. (1997). The evolution of schistosomiasis at Loum, Cameroon: replacement of Schistosoma intercalatum by S. haematobium through introgressive hybridization. Transactions of the Royal Society of Tropical Medicine and Hygiene 91, 664–665.CrossRefGoogle Scholar
TCHUEM TCHUENTÉ, L. A., SOUTHGATE, V. R., THÉRON, A., JOURDANE, J., LY, A. & GRYSEELS, B. (1999). Compatibility of Schistosoma mansoni and Biomphalaria pfeifferi in Northern Senegal. Parasitology 118, 595–603.CrossRefGoogle Scholar
WEBSTER, B. L., SOUTHGATE, V. R. & TCHUEM TCHUENTÉ, L. A. (2003). On Schistosoma haematobium, S. intercalatum and occurrences of their natural hybridisation in South West Cameroon. In Taxonomy, Ecology and Evolution of Metazoan Parasites. Livre hommage a Louis Euzet, University of Perpignan, France (in the Press).
WIJK VAN, H. B. (1969 a). Infection with Schistosoma intercalatum in Mungo department, Cameroun. Tropical and Geographical Medicine 21, 362–374.Google Scholar
WIJK VAN, H. B. (1969 b). Schistosoma intercalatum infection in school-children of Loum, Cameroun. Tropical and Geographical Medicine 21, 375–382.Google Scholar
WRIGHT, C. A., SOUTHGATE, V. R., WIJK, H. B. & MOORE, P. J. (1974). Hybrids between Schistosoma haematobium and S. intercalatum in Cameroon. Transactions of the Royal Society of Tropical Medicine and Hygiene 68, 413–414.CrossRefGoogle Scholar
WRIGHT, C. A. & SOUTHGATE, V. R. (1976). Hybridization of schistosomes and some of its implications. In Genetic Aspects of Host–Parasite Relationships (ed. Taylor, A. E. R. & Muller, R.), pp. 55–86. Blackwell Scientific, Oxford.
WRIGHT, C. A. & ROSS, G. C. (1980). Enzymes in Schistosoma haematobium. Bulletin of the World Health Organization 61, 307–316.Google Scholar
WRIGHT, W. H. (1973). Geographic distribution of schistosomiasis and their intermediate hosts. Epidemiology and Control of Schistosomiasis (Bilharziasis) ( ed. Ansari, N.), pp. 232–247. University Park Press, Baltimore.
ZWINGENBERGER, K., FELDMEIER, H., BIENZLE, U. & STEINER, A. (1990). Mixed Schistosoma haematobium/Schistosoma intercalatum infections. Annals of Tropical Medicine and Parasitology 84, 85–87.CrossRefGoogle Scholar