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A comparison of the efficiency of the percutaneous and per-oral routes of infection in caprine Schistosoma bovis infections

Published online by Cambridge University Press:  18 November 2009

Ayub Kassuku ,
Peter Nansen  and
Niels Ø. Christensen
Ayub Kassuku
Affiliation:
Institute of Veterinary Microbiology and Hygiene, Royal Veterinary and Agricultural University, Būlowsvej 13, DK-1870 Copenhagen V, Denmark,
Peter Nansen
Affiliation:
Institute of Veterinary Microbiology and Hygiene, Royal Veterinary and Agricultural University, Būlowsvej 13, DK-1870 Copenhagen V, Denmark,
Niels Ø. Christensen
Affiliation:
Institute of Veterinary Microbiology and Hygiene, Royal Veterinary and Agricultural University, Būlowsvej 13, DK-1870 Copenhagen V, Denmark, Danish Bilharziasis Laboratory, Jaegersborg Alle 1 D, DK-2920 Charlottenlund, Denmark
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Abstract

The comparative efficiency of the percutaneous and per-oral routes of infection was studied in goats experimentally infected with Schistosoma bovis. The heaviest infection was obtained by the percutaneous route, but a relatively high parasite load was also achieved by the per-oral route, i.e., where goats were allowed to drink a cercarial suspension, volume of 0·9 to 1·7 litre per animal. Studies using radio-isotopically labelled cercariae were designed to clarify the cercarial penetration sites following uptake by drinking. Radioactivity could be demonstrated in the outer lips, buccal cavity, oesophagus and the reticulum, omasum and rumen. Highest counts were recorded in outer lips, reticulum and rumen constituting 41·2, 22·1 and 20·6%, respectively, of total radioactivity recovered. It is concluded that the per-oral infection route may play a larger role than hitherto anticipated in infection of ruminants, and possibly also in other mammals, with schistosomes. The epidemiological implications of the present findings are discussed.

Type
Research Papers
Information
Journal of Helminthology , Volume 59 , Issue 1 , March 1985 , pp. 23 - 28
Copyright
Copyright © Cambridge University Press 1985

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