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Regional specializations of the tegument of the metacercaria of Timoniella imbutiforme

Published online by Cambridge University Press:  12 April 2024

H.E.M. El-Darsh  and
P.J. Whitfield
H.E.M. El-Darsh
Affiliation:
Infection and Immunity Research Group, Division of Life Sciences, King's College London, Campden Hill Road, London, W8 7AH, UK
P.J. Whitfield*
Affiliation:
Infection and Immunity Research Group, Division of Life Sciences, King's College London, Campden Hill Road, London, W8 7AH, UK
*
*Author for correspondence Fax: 0171 333 4500 E-mail: phil.whitfield@kcl.ac.uk
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Abstract

The ultrastructure of the spinous body tegument of the metacercaria of Timoniella imbutiforme (Molin, 1859) has recently been described. Other regions of the metacercarial tegument, including those of the oral sucker, pharynx, and nephridiopore, demonstrate considerable specializations. The oral sucker tegument had an aspinous outer syncytial layer that possessed a pimpled apical surface as well as enclosing two types of secretory bodies. The pharyngeal tegument likewise lacked spines, but possessed only one type of secretory body, and a smooth but folded outer surface. The nephridiopore tegument, however, showed the greatest degree of specialization possessing a single type of secretory body specific only to this region of the tegument. Also associated with the syncytium here was a prominent long filamentous glycocalyx, and microtubules which were observed for the first time in this region of the tegument.

Type
Research Article
Information
Journal of Helminthology , Volume 74 , Issue 1 , March 2000 , pp. 67 - 72
Copyright
Copyright © Cambridge University Press 2000

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