Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-15T17:36:42.652Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron-microscope studies of Fasciola hepatica III. Further observations on the tegument and associated structures

Published online by Cambridge University Press:  06 April 2009

L. T. Threadgold
L. T. Threadgold
Affiliation:
Zoology Department, Queen's University, Belfast, Northern Ireland
Get access Rights & Permissions [Opens in a new window]

Extract

Additional ultrastructural features of the tegument of Fasciola hepatica, after glutaraldehyde fixation and high resolution, have been observed.

Two distinct types of tegumental cells are shown to be present, the type 1 cell having been previously described. Details of the fine structure of the nucleus, mitochondria, endoplasmic reticulum and Golgi complex of the type 2 cell are given. The type 2 cell is characterized by biconcave secretory bodies derived from the Golgi complex and the latter is intimately related to the granular endoplasmic reticulum, from which it is derived by blebbing. The type 2 cells are connected by protoplasmic tubes to the same surface syncytium as type 1 cells.

These new findings of the structure of the tegument of Fasciola are compared with previous reports on the ultrastructure of the tegument in other flukes.

I should like to express my sincere thanks to the following: the Wellcome Trust and S.R.C. for grants to purchase an Akashi TRS 50 and an A.E.I. E.M. 6B electron microscope respectively; the Royal Society for a personal grant to purchase a Reichert Ultramicrotome and a vacuum coating unit.

My thanks are also due to Mr W. Ferguson for photographic skill and to Mr A. Lyness for technical assistance and microscope maintenance, and my Research Associate, Mrs S. S. E. Dermott, for expert electron-microscopy.

Type
Research Article
Information
Parasitology , Volume 57 , Issue 4 , November 1967 , pp. 633 - 637
Copyright
Copyright © Cambridge University Press 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bjorkman, N. & Thorsell, W. (1963). On the fine structure and resorptive function of the cuticle of the liver fluke, Fasciola hepatica L. Exptl Cell. Res. 33, 319–29.CrossRefGoogle Scholar
Burton, P. R. (1964). The ultrastructure of the integument of the frog lung fluke, Haematoloechus medioplexus. J. Morph. 115, 305–18.CrossRefGoogle ScholarPubMed
Burton, P. R. (1966). The ultrastructure of the integument of the frog bladder fluke, Gorgoderina sp. J. Parasit. 52, 926–34.CrossRefGoogle ScholarPubMed
Threadgold, L. T. (1963). The tegument and associated structures of Fasciola hepatica. Q. Jl microsc. Sci. 104, 505–12.Google Scholar