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Investigations of the unimiracidial infection of Schistosoma intercalatum in snails and the infection of the final host using cercariae of one sex

Published online by Cambridge University Press:  05 June 2009

Flemming Frandsen
Flemming Frandsen
Affiliation:
Danish Bilharziasis Laboratory, Jaegersborg Allé 1 d, 2920 Charlottenlund, Denmark
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Abstract

Infection with single miracidial doses of Schistosoma intercalatum from Cameroun in Bulinus forskalii and from Zaïre in B. globosus resulted in an equal number of male and female infections. The cercarial production of both sexes started at the same time. The male infected snails produced a greater number of cercariae, because of the longer duration of infection.

The recovery of schistosomes from infection with male and female cercariae was for S. intercalatum, Zaïre, 38·8 ± 10·6 and 18·7 ± 14·0 respectively.

For S. intercalatum from Cameroun, with single sex cercariae from two different populations of intermediate hosts from Zaïre and Cameroun were 38·3 ± 7·3 (♂); 20·3 ± 9·3 (♀) and 35·0 ± 8·7 (♂); 12·2 ± 4·5 (♀), respectively.

Type
Research Article
Information
Journal of Helminthology , Volume 51 , Issue 1 , March 1977 , pp. 5 - 10
Copyright
Copyright © Cambridge University Press 1977

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