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Ultrastructural observations of the tegument of Postorchigenes gymnesicus (Digenea: Lecithodendriidae)

Published online by Cambridge University Press:  05 June 2009

J.R. Ferrer ,
M. Gracenea ,
M. Trullols  and
O. Gonzalez-Moreno
J.R. Ferrer
Affiliation:
Cell Biology Unit, Faculty of Biology, University of Barcelona, Avda. Diagonal, 645, 08028 Barcelona, Spain
M. Gracenea
Affiliation:
Laboratory of Parasitology, Faculty of Pharmacy, University of Barcelona, Avda. Diagonal, s/n, 08028 Barcelona, Spain
M. Trullols
Affiliation:
Laboratory of Parasitology, Faculty of Pharmacy, University of Barcelona, Avda. Diagonal, s/n, 08028 Barcelona, Spain
O. Gonzalez-Moreno
Affiliation:
Laboratory of Parasitology, Faculty of Pharmacy, University of Barcelona, Avda. Diagonal, s/n, 08028 Barcelona, Spain
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Abstract

The tegument of Postorchigenes gymnesicus has been studied by scanning and transmission electron microscopy. The general body tegument is spinous and contains mitochondria, biconcave disc-shaped vesicles bounded by an unitary membrane and displaying a protein content, and scarce spherical bodies. The tegument covering specialized body regions is aspinous. Few vesicles were evident in the tegument covering the suckers and oesophagus, being more abundant in the metraterm and cirrus where the tegument is thicker. Laurer's canal has a thick tegument with sparse vesicles, mostly arranged close to the apical membrane. A direct association was evident between the basal lamina underlying the spines and the muscular subtegumental fibres, suggesting a motile character for the spine.

Type
Research Papers
Information
Journal of Helminthology , Volume 70 , Issue 1 , March 1996 , pp. 13 - 19
Copyright
Copyright © Cambridge University Press 1996

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