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Hybridisation Experiments on Five Species of African Schistosomes*

Published online by Cambridge University Press:  05 June 2009

M. G. Taylor
Affiliation:
Department of Medical Helminthology London School of Hygiene and Tropical Medicine

Extract

The African schistosomes fall naturally into two main groups of sibling species, the S. haematobium complex and the S. mansonil S. rodhaini group. Morphological differentiation of the species within each group depends on small differences in the eggs but in many cases there are clear biological differences in definitive and intermediate host specificity and in parasitic site within the host, and these criteria serve to strengthen a classification based on egg morphology. Nevertheless, many authors have disputed the validity

Type
Research Article
Copyright
Copyright © Cambridge University Press 1970

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References

Becquet, R., 1967.—“Contribution a l'dtude de la bilharziose a S. intercalation”.Ann. Soc. beige. Mid. trop., 47, 3560.Google Scholar
Berrie, A. D. and Goodman, J. D., and 1962.—“The Occurrence of Schistosoma rodhaini Brumpt, 1931 in Ugand a”.Ann. trop. Med. Parasit., 56, 297301.CrossRefGoogle Scholar
Brumpt, E., 1931.—“Description De Deux Bilharzies De Mammiferes Africain, Schistosoma curassoni sp. inquir. et Schistosoma rodhaini n.sp”.Annls Parasit. hum. comp., 9, 325338.CrossRefGoogle Scholar
Chu, K. Y., Massoud, J. and Sabbaghian, H., 1966a.—“Host-parasite relationship of Bidinus truncatus and Schistosoma haematobium in Iran. I. The effect of the age of B. truncatus on the development of S. haematobium”.Bull. Wld Hlth Org., 34, 113119.Google ScholarPubMed
Chu, K. Y., Massoud, J. and Sabbaghian, H., 1966b.—“Host-parasite relationship of Bulinus truncatus and Schistosoma haematobium in Iran. IV. The effect of month of infection on cercarial incubation periods of S. haematobium and S. bovis”.Bull. Wld Hlth Org., 34, 135140.Google Scholar
Cowyer, S. G., 1947.—“Observations On The Life Cycle Of Schistosoma mansoni in the laboratory, with a discussion on the snail vectors of 5. mansoni and S. haematobium”.Ann. trop. Med. Parasit., 41, 173177.Google Scholar
Cram, E. B., 1953.—“Evidence Concerning Geographic Strains of human schistosomes and their molluscan hosts.” In: Thapar Commemoration Volume- a collection of articles presented to Prof. G. S. Thapar on his 60th birthday, ed. by Dayal, J. and Singh, K.. University of Lucknow, 51–62.Google Scholar
Desciiiens, R. and Poirier, A., 1967.—“Aspects Epiddmiologiques et cliniques de la bilharziose a Schistosoma intercalatum”.Bull. Soc. Path, exot., 60,228240.Google Scholar
Dinnik, J. A. and Dinnik, N. N., 1965.—“The Schistosomes of domestic ruminants in Eastern Africa”.Bull epizoot. Dis. A Jr., 13, 341359.Google ScholarPubMed
Fisher, A. C, 1934J.—“A Study Of Schistosomiasis Of The Stanleyville district of the Belgian Congo”.Trans. R. Soc. trop. Med. Hyg., 28, 277306.CrossRefGoogle Scholar
Fripp, P. J., 1964.—“Notes On The Development Of Schistosoma rodhaini Brumpt in the laboratory”.Ann. trop. Med. Parasit. 58, 224227.CrossRefGoogle ScholarPubMed
Fripp, P. J., 1967.—“On The Morphology Of Schistosoma Rodhaini (Trematodn, Digenea, Schistosomatidae)”.J. Zool. Lond., 151, 433452.CrossRefGoogle Scholar
Fripp, P. J., 1968.—“Some Observations On The Behaviour of the Kampala strain of S. rodhaini in the laboratory”.S. Afr. J. Med. Sci., 33, 2130.Google ScholarPubMed
Gismann, A., 1954.—“Notes On Various Molluscan Genera Of the family Planor-bidac involved in the transmission of bilharziasis in Africa and the Near East”. J. Egypt, med. Ass., 37, 11631184.Google ScholarPubMed
Howaldt, H. G. and Armstrong, F. I., 1969.—“Susceptibilities of Bulinus (Physopsis) africanus and B. truncatus to four schistosome strains”.Trans R. Soc. trop. Med. Hyg., 63, 149150. (Correspondence).CrossRefGoogle Scholar
Howaldt, H. G., and Pitchford, R. J., 1963.—“Susceptibility of Attstralorbis glabratus and Biomphalaria Pfeifferi to Schistosoma rodhaini”. Trans. R. Soc. trop. Med. Hyg. 37, 313. (Correspondence).CrossRefGoogle Scholar
Hsu, H. F., Hsu, S. Y. L. and Chu, K. Y 1962.—“Interbreeding of geographic strains of Schistosoma japonicum”.Trans. R. Soc. trop. Med. Hyg., 56, 383385.CrossRefGoogle Scholar
Kinoti, G. 1968.—“Observations On The Infection Of Bulinid snails with Schistosoma mattheei. I. The susceptibility of Bulinus africanus and Bulinus truncatus”.Ann. trop. Med. Parasit., 62, 382392.CrossRefGoogle ScholarPubMed
Lengy, J., 1962a.—“Studies On Schistosoma Bovis (Sonsino, 1876) in Israel. H. The intramammalian phase of the life cycle”.Bull. Res. Counc. of Israel., 10, 7396.Google Scholar
Lengy, J., 1962b.—“Studies On Schistosoma Bovis (Sonsino, 1876) in Israel. I. Larval stages from egg to cercariae”.Bull. Res. Counc. Israel., 10, 136.bbGoogle Scholar
Le, Roux, P. L., 1954.—“Hybridisation Of Schistosoma Tnansoni and Schistosoma rodhaini”.Trans. R. Soc. trop. Med. Hyg., 43, 3. (Demonstration).Google Scholar
Mayr, E., 1963.—Animal Species and Evolution. Oup London. 1797.CrossRefGoogle Scholar
Nelson, G. S., Teesdale, C. and Highton, R. B., 1962.—“The rfile of animals as reservoirs of bilharziasis in Africa”. In: Ciba Foundation Symposium on Bilharziasis” (Eds. Wolstcnholme, G. E. W. and O'Connor, M.). 127149. Churchill, London.CrossRefGoogle Scholar
Pitchford, R. J. 1959.—“Cattle Schistosomiasis in man in the Eastern Transvaal”.Trans. R. Soc. trop. Med. Hyg. 53, 285290.CrossRefGoogle ScholarPubMed
Pitchford, R. J, 1961.—“Observations on a possible hybrid between the two schisto somes S. haematobium and S. mattheei”.Trans. R. Soc. trop. Med. Hyg. 55, 4451.CrossRefGoogle Scholar
Pitchford, R. J, 1965.—“Differences in the egg morphology and certain biologi:~l characteristics of some African and Middle Eastern schistosomes genus Schistosoma with terminal-spined eggs”.Bull. Wld Hlth Org., 32, 105–12Google Scholar
REP, B. HVetter, J. C. M. and Eijsker, M., 1968.—“Cross breeding experiments in Ancylostoma braziliense De Faria, 1910 and A. ceylanicum Looss, 1911”.Trop. geogr. Med., 20, 367378.Google Scholar
Saoudj, M. F. A., 1965a.—“Comparative studies on the characteristics of some geographical strains of S. mansoni in mice and hamsters”.J. Helminth., 39, 101112.CrossRefGoogle Scholar
Saoudj, M. F. A., 1965b.—“Susceptibilities of various snail intermediate hosts ofSchistosoma mansoni to different strains of the parasite”.J. Helminth., 39, 363376.CrossRefGoogle Scholar
Saoudj, M. F. A., 1966a.—“On The Morphology and infectivity of Schistosoma rodhaini from Kenya”.J. Helminth., 40, 147154.CrossRefGoogle Scholar
Saoudj, M. F. A., 1966b.—“Susceptibility of some planorbid snails to infection with Schistosoma rodhaini from Kenya”.J. Helminth., 40, 379384.CrossRefGoogle Scholar
Schwetz, J., 1951.—“A Comparative morphological and biological study of Schistosoma haematobium, S. bovis, S. intercalatum Fisher, 1934, and S. rodhaini, Brumpt, 1931”.Ann. trop. Med. Parasit., 45, 9298.CrossRefGoogle Scholar
Schwetz, J., 1953.—“On A New Schistosome of wild rodents found in the Belgian Congo, Schistosoma mansoni var. rodentorum var. nov”.Ann. trop. Med. Parasit., 47, 183186.CrossRefGoogle ScholarPubMed
Schwetz, J., 1954.—“On Two Schistosomes of wild rodents of the Belgian Congo: Schistosoma rodhaini Brumpt, 1931 and Schistosoma mansoni var. rodentorum Schwetz, 1953 and their relationship to 5. mansoni of man”.Trans. R. Soc. trop. Med. Hyg., 48, 89100CrossRefGoogle Scholar
Short, R. B. and Menzel, M. Y 1959.—“Chromosomes in parthenogenetic miracidia and embryonic cercariae of Schistosomatium douthitti”.Expl Parasit., 8, 249264.CrossRefGoogle ScholarPubMed
Short, R. B. and Menzel, M. Y., 1960.—“Chromosomes of nine species of schisto somes”.J. Parasit., 46, 273287.CrossRefGoogle Scholar
Taylor, M. G., Amin, M. B. A., and NELSON, G. S.. 1969.—“Parthenogenesis’ in Schistosoma mattheei”. J. Helminth., 43, 197206.CrossRefGoogle ScholarPubMed
Vogel, H., 1941.—“Uber Den Einfluss des Geschlechtspartners aiif Wachstum und Entwicklung bei Bilharzia mansoni und Kreuzpaarungen zwischen verschiedenen’ Bilharzia-Axten”.Zentbl. Bakt. ParasitKde, Abt. I. Orig., 148, 7896.Google Scholar
Vogel, H., 1942.—“Uber Die Nachkommenschaft aus Kreuzpaarungen zwischen Bilharzia mansoni und B.japonica”.Ibidem, Abt. I. Orig., 149,319333.Google Scholar
Wright, C. A., 1962.—“The Significance of infra-specific taxonomy in bilhar-ziasis”. In: CIBA Foundation Symposium on Bilharziasis” (Eds. Wolstenholme, G. E. W. and O‧Connor, M.), 103–120. Churchill. London.Google Scholar