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Scanning electron microscope studies of miracidia suggest introgressive hybridization between Schistosoma haematobium and S. haematobium x S. mattheei in the Eastern Transvaal

Published online by Cambridge University Press:  05 June 2009

F. J. Kruger  and
V. L. Hamilton-Attwell
F. J. Kruger
Affiliation:
Research Institute for Diseases in a Tropical Environment of the South African Medical Research Council, P.O. Box 634 Nelspruit 1200, Republic of South Africa
V. L. Hamilton-Attwell
Affiliation:
Department of Zoology, Potchefstroom University for Christian Higher Education, Potchefstroom 2520, Republic of South Africa
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Abstract

Schistosoma haematobium miracidia were collected from a locality with a high prevalence of human infection with the animal parasite, S. mattheei, which hybridizes with S. haematobium, and from 2 localities with negligible infection rates. The terebratoria of the miracidia from these localities were compared with each other, with laboratory maintained S. haematobium and with four populations of S. mattheei by means of scanning electron microscopy. It was found that the terebratorial membrane of certain of the S. haematobium miracidia from the locality with a high S. mattheei prevalence in humans, resembled the more intricate membrane of S. mattheei. This suggests introgressive hybridization between S. haematobium and S. haematobium x S. mattheei.

Keywords

Schistosoma haematobiumSchistosoma mattheeimiracidiaterebratoriaintrogressive hybridization
Type
Research Papers
Information
Journal of Helminthology , Volume 62 , Issue 2 , June 1988 , pp. 141 - 147
Copyright
Copyright © Cambridge University Press 1988

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References

REFERENCES

Bullock, G. R. (1984) Fixation for electron microscopy. Journal of Microscopy, 133, 1–16.CrossRefGoogle Scholar
Eklu-Natey, D. T., Wuest, J., Swiderski, Z., Striebel, H. P. & Huggel, H. (1985) Comparative scanning electron microscope (SEM) study of miracidia of four human schistosome species. International Journal for Parasitology, 15, 33–42.CrossRefGoogle ScholarPubMed
Hayat, M. A. (1972) Basic electron microscopy techniques. Van Nostrand Reinhold, New York.Google Scholar
Kruger, F. J. (1987) Enzyme electrophoresis of South African Schistosoma mattheei and S. haematobium. Onderstepoort Journal of Veterinary Research, 54, 93–96.Google ScholarPubMed
Kruger, F. J., Hamilton-Attwell, V. L. & Schutte, C. H. J. (1986a) Scanning electron microscopy of the teguments of males from five populations of S. mattheei. Onderstepoort Journal of Veterinary Research, 53, 109–110.Google Scholar
Kruger, F. J., Schutte, C. H. J., Visser, P. S. & Evans, A. C. (1986b) Phenotypic differences in Schistosoma mattheei ova from populations sympatric and allopatric to S. haematobium. Onderstepoort Journal of Veterinary Research, 53, 103–107.Google ScholarPubMed
Mayr, E. (1970) Populations, species and evolution. Harvard University Press, Cambridge, Massachusetts.Google Scholar
Pitchford, R. J. (1959) Cattle schistosomiasis in man in the Eastern Transvaal. Transactions of the Royal Society of Tropical Medicine and Hygiene, 53, 285–290.CrossRefGoogle ScholarPubMed
Pitchford, R. J. (1961) Observations on a possible hybrid between the two schistosomes S. haematobium and S. mattheei. Transactions of the Royal Society of Tropical Medicine and Hygiene, 55, 44–51.CrossRefGoogle ScholarPubMed
Schutte, C. H. J., Jackson, T. F. H. G., Visser, P. S., De Kock, K. N. & Pretorius, S. J. (1983) False-positive reactions in the serological diagnosis of schistosomiasis. South African Medical Journal, 64, 239–240.Google ScholarPubMed
Taylor, M. G. (1970) Hybridisation experiments on five species of African schistosomes. Journal of Helminthology, 44, 253–314.CrossRefGoogle ScholarPubMed
Visser, P. S. & Pitchford, R. J. (1972) A simple apparatus for rapid recovery of helminth eggs from excreta with special reference to Schistosoma mansoni. South African Medical Journal, 46, 1344–1346.Google ScholarPubMed
Wright, C. A. & Ross, G. C. (1980) Hybrids between Schistosoma haematobium and S. mattheei and their identification by isoelectric focusing. Transactions of the Royal Society of Tropical Medicine and Hygiene, 74, 326–332.CrossRefGoogle ScholarPubMed