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Cercaria vaullegeardi Pelseneer, 1906 (Digenea: Hemiuridae); the daughter sporocyst and emergence of the cercaria

Published online by Cambridge University Press:  06 April 2009

B. F. Matthews
B. F. Matthews
Affiliation:
Department of Biological Sciences, Plymouth Polytechnic, Drake Circus, Plymouth PL4 8AA, Devon
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Summary

The daughter sporocyst of Cercaria vaullegeardi has hitherto been regarded as occurring within the haemocoel of the digestive gland of Gibbula umbilicalis. A re-examination has shown that an important part of the sporocyst, previously overlooked, extends from the digestive gland, through the afferent renal vein, the right kidney haemocoel and the transverse pallial vessel into the blood channel within a gill filament, thus providing a means of exit from the host directly into the mantle cavity. The sporocyst is described at light and electron microscope levels, and the emergence of the cystophorous cercariae is discussed.

Type
Research Article
Information
Parasitology , Volume 81 , Issue 1 , August 1980 , pp. 61 - 69
Copyright
Copyright © Cambridge University Press 1980

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