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Studies of the relationships between Schistosoma and their intermediate hosts. II. The genus Bulinus and Schistosoma haematobium from Sudan, Zaire and Zambia

Published online by Cambridge University Press:  05 June 2009

Flemming Frandsen
Flemming Frandsen
Affiliation:
Danish Bilharziasis Laboratory, Jaegersborg Alle 1 D, 2920 Charlottenlund, Denmark
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Abstract

The relationship between Schistosoma haematobium from Sudan, Zaire and Zambia and various species and strains of Bulinus, has been investigated. The main emphasis was placed on evaluating the total cercarial production per 100 exposed snails as an index of the compatibility between snail and schistosome. The observations confirmed the results of previous compatibility studies which showed that there two groups of S. haematobium, truncatus-borne from Sudan and Zaire, and africanus-borne, from Zambia. They also revealed that this division was not absolute, as some overlapping occurred. However, if the cercarial production was taken as an indication of compatibility, instead of the infection rate, there was a more definite division between the two groups.

The observation that there is a truncatus-borne strain of S. haematobium present in Zaire extends the area where there is a mixture of truncatus-and africanus-borne strains farther southwards.

Type
Research Papers
Information
Journal of Helminthology , Volume 53 , Issue 3 , September 1979 , pp. 205 - 212
Copyright
Copyright © Cambridge University Press 1979

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