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Trichobilharzia ocellata: chemical stimuli of duck skin for cercarial attachment

Published online by Cambridge University Press:  06 April 2009

W. Feiler  and
W. Haas
W. Feiler
Affiliation:
Institutfür Zoologie I, Universität Erlangen-Nürnberg, Staudtstrasse 5, D-8520 Erlangen, Federal Republic of Germany
W. Haas*
Affiliation:
Institutfür Zoologie I, Universität Erlangen-Nürnberg, Staudtstrasse 5, D-8520 Erlangen, Federal Republic of Germany
*
†To whom reprint requests should be addressed.
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Summary

Trichobilharzia ocellata cercariae attach readily to the foot skin of their duck host, but poorly to preen-gland contents. The attachment to duck foot disappears when the skin surface lipids are extracted, and can be restored by reapplication of the lipids to the skin. Hydrophilic skin extracts are without any effect. Thin-layer chromatographic fractionation of duck-foot skin surface lipids reveals cholesterol and ceramides as attachment stimuli. A stimulation of cercarial attachment by these hydrophobic host signals is supported by the host identification pattern of the cercariae, which secures a close contact with encountered substrates.

Type
Research Article
Information
Parasitology , Volume 96 , Issue 3 , June 1988 , pp. 507 - 517
Copyright
Copyright © Cambridge University Press 1988

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