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The interaction of Schistosoma haematobium and S. guineensis in Cameroon

Published online by Cambridge University Press:  12 April 2024

B.L. Webster ,
L.A. Tchuem Tchuenté ,
J. Jourdane  and
V.R. Southgate
B.L. Webster*
Affiliation:
Biomedical Parasitology Division, Wolfson Wellcome Biomedical Laboratories, Department of Zoology, The Natural History Museum, Cromwell Road, South Kensington, London, SW7 5BD, UK
L.A. Tchuem Tchuenté
Affiliation:
Laboratoire de Biologie Générale, Faculté des Sciences, Université de Yaoundé 1, BP 812 Yaoundé, Cameroun
J. Jourdane
Affiliation:
Centre de Biologie et d'Ecologie Méditerranéenne (UMR CNRS 5555), Université de Perpignan, Avenue de Villeneuve, 66860, Perpignan, Cedex, France
V.R. Southgate
Affiliation:
Biomedical Parasitology Division, Wolfson Wellcome Biomedical Laboratories, Department of Zoology, The Natural History Museum, Cromwell Road, South Kensington, London, SW7 5BD, UK
*
*Fax: 0044 207942 5518, E-mail: B.Webster@nhm.ac.uk
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Abstract

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Interactions between schistosomes are complex with some different species being able to mate and hybridize. The epidemiology of schistosomiasis in specific areas of South West Cameroon has evolved remarkably over 30 years as a result of hybridization between Schistosoma guineensis and S. haematobium. Morphological and biological data suggest that S. haematobium replaced S. guineensis in areas of Cameroon through introgressive hybridization. Data are reported on the use of single stranded conformational polymorphism (SSCP) analysis of the nuclear ribosomal second internal transcribed spacer (ITS2) of individual schistosomes from hybrid zones of Cameroon. The data show that since 1990 S. haematobium has completely replaced S. guineensis in Loum, with S. haematobium and the recombinants still present in 2000. This study illustrates the complexities of the dynamics between S. haematobium and S. guineensis in South West Cameroon.

Type
Review Article
Information
Journal of Helminthology , Volume 79 , Issue 3 , September 2005 , pp. 193 - 197
Copyright
Copyright © Cambridge University Press 2005

References

Duke, B.O.L. & Moore, P.J. (1976) The use of a molluscicide, in conjunction with chemotherapy, to control Schistosoma haematobium at the Barombi Lake foci in Cameroon. III. Conclusions and costs. Tropical Medicine and Parasitology 27, 505–508.Google ScholarPubMed
Kane, R.A. Bartley, J. Stothard, J.R. Vercruysse, J. Rollinson, D. & Southgate, V.R. (2002) Application of single strand conformational polymorphism (SSCP) analysis with fluorescent primers for differentiation of Schistosoma haematobium group species. Transactions of the Royal Society of Tropical Medicine and Hygiene 96, 235–241.CrossRefGoogle ScholarPubMed
Kane, R.A. Southgate, V.R. Rollinson, D. Littlewood, D.T.J. Lockyer, A.E. Pages, J.R., Tchuem Tchuenté, L.A & Jourdane, J. (2003) A phylogeny based on three mitochondrial genes supports the division of Schistosoma intercalatum into two separate species. Parasitology 127, 131–137.CrossRefGoogle ScholarPubMed
Morand, S. Southgate, V.R. & Jourdane, J. (2002) A model to explain the replacement of Schistosoma intercalatum by Schistosoma haematobium and the hybridS. intercalatum . haematobium in areas of sympatry . Parasitology 124, 401–408.CrossRefGoogle Scholar
Pagès, J.R, Southgate, V.R. Tchuem Tchuenté, L.A. & Jourdane, J. (2002) Experimental evidence of hybrid breakdown between the two geographical strains of Schistosoma intercalatum. Parasitology 124,169–175.CrossRefGoogle ScholarPubMed
Pagès, J.R., Jourdane, J., Southgate, V.R. & Tchuem Tchuenté, L.A. (2003) Reconnaissance de deux espèces jumelles au sein du taxon Schistosoma intercalatum Fisher, 1934, agent de la schistosomosa humaine rectale en Afrique. Description de Schistosoma guineensis. pp.139–147 in> Combes Combes, C. & Jourdane, J. (Eds) Taxonomy, ecology and evolution of metazoan parasites. Livre hommage à Louis Euzet . 2, Université de Perpignan, Perpignan,France.Google 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 ScholarPubMed
Rollinson, D. & Southgate, V.R. (1985) Schistosome and snail populations: genetic variability and parasite transmission. pp.99–109 in> Rollinson, D. & Anderson, R.M.. (Eds) Ecology and genetics in host-parasite interactions .London Academic Press (Linnean Society of London Sympoies).Google Scholar
Southgate, V.R. (1997) Schistosomiasis in the Senegal River Basin: before and after the construction of the dams at Diama, Senegal and Manantali, Mali and future prospects. Journal of Helminthology 71, 125–132.CrossRefGoogle ScholarPubMed
Southgate, V.R. van Wijk, H.B. & Wright, C.A. (1976) Schistosomiasis at Loum Cameroon; Schistosoma haematobium , S intercalatum and their hybrid. Zeitschrift für Parasitenkunde 49, 145–159.CrossRefGoogle ScholarPubMed
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. 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 ScholarPubMed
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 puzzling restricted distribution of Schistosoma intercalatum. Parasitology 113, 129–136.CrossRefGoogle Scholar
Tchuem Tchuenté, L.A, Southgate, V.R., Nijiokou, F., Nijiné, T., Kouemeni, L.E. & Jourdane, J. (1997) The evolution of schistosomiasis at Loum, Cameroon: replacement of Schistosoma intercalatum by S. haematobium through introgressive hybridisation. Transactions of the Royal Society of Tropical Medicine and Hygiene 91, 664–665.CrossRefGoogle Scholar
van Wijk, H.B. (1969) Schistosoma intercalatum -infection in schoolchildren of Loum, Cameroun. Tropical and Geographical Medicine 21, 375–382.Google 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. 319–339 in Combes, C. & Jourdane, J. (Eds) Taxonomy, ecology and evolution of metazoan parasites. Livre hommage à Louis Euzet . 2 Perpignan, France Université de Perpignan.Google Scholar
Wright, C.A. & Southgate, V.R. (1976) Hybridization of schistosomes and some of its implications. 55–86 in Taylor, A.E.R. & Muller, R. (Eds) Genetic aspects of host–parasite relationships . Oxford, Blackwell Scieific.Google Scholar
Wright, C.A. Southgate, V.R. & Knowles, R.J. (1972) What is Schistosoma intercalatum Fisher, 1934 ?. Transactions of the Royal Society of Tropical Medicine and Hygiene 66, 28–64.CrossRefGoogle ScholarPubMed
Wright, C.A. Southgate, V.R., van 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 ScholarPubMed