Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-09T16:17:33.866Z Has data issue: false hasContentIssue false
  • English
  • Français

The ultrastructure of the epidermis of the redia and cercaria of Parorchis acanthus, Nicoll. A study by scanning and transmission electron-microscopy

Published online by Cambridge University Press:  06 April 2009

Gwendolen Rees
Gwendolen Rees
Affiliation:
Department of Zoology, University College of Wales, Aberystwyth
Get access Rights & Permissions [Opens in a new window]

Extract

Scanning electron-micrographs have shown the covering of microvilli on the surface of the redia of Parorchis acanthus. In the contracted state the elongated microvilli with bulbous extremities seen in the surface grooves may be the result of compression. The surface of the epidermis of the cercaria is smooth on a large area of the ventral surface and lattice-like with microvilli, laterally, anteriorly, dorsally and on the tail. The spines on the body can be withdrawn into sheaths by the contraction of muscle fibres inserted into the basement lamina below each spine.

I would like to express my sincere gratitude to Dr I. ap Gwynn of this department for preparing the scanning electron-micrographs and the School of Engineering Science, University of North Wales, Bangor for the use of their stereoscan. I should also like to thank Mr M. C. Bibby for technical assistance and Professor E. G. Gray and Dr W. Sinclair for assistance with the transmission electron-micrographs.

Type
Research Article
Information
Parasitology , Volume 62 , Issue 3 , June 1971 , pp. 479 - 488
Copyright
Copyright © Cambridge University Press 1971

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

Bils, R. F. & Martin, W. E. (1966). Fine structure and development of the trematode integument. Transactions of the American Microscopical Society 85, 78–88.CrossRefGoogle ScholarPubMed
Burton, P. R. (1964). The ultrastructure of the integument of the frog lung-fluke Haematoloechus medioplexus (Trematoda: Plagiorchiidae). Journal of Morphology 115, 305–18.CrossRefGoogle ScholarPubMed
Cardell, R. R. (1962). Observations on the ultrastructure of the body of the cercaria of Himasthla quissetensis (Miller & Northup, 1962). Transactions of the American Microscopical Society 81, 124–31.CrossRefGoogle Scholar
Collin, W. K. (1968). Electron microscope studies of the muscle and hook systems of hatched oncospheres of Hymenolepis citelli McLeod, 1933 (Cestoda: Cyclophyllidea). Journal of Parasitology 54, 74–88.CrossRefGoogle ScholarPubMed
Danilova, L. K., Roklolenko, K. D. & Bodryazina, A. V. (1969). Electron microscope study on the structure of septate and comb desmosomes. Zeitschrift für Zellforschung und mikroskopische Anatomie 100, 101–17.CrossRefGoogle Scholar
Erasmus, D. A. (1967). The host-parasite interface of Cyathocotyle bushiensis Khan, 1962 (Trematoda: Strigeoidea) 11. Electron microscope studies of the tegument. Journal of Parasitology 53, 703–14.CrossRefGoogle Scholar
Lee, D. L. (1966). The structure and composition of the helminth cuticle. Advances in Parasitology 4, 187–254.CrossRefGoogle ScholarPubMed
Lyons, K. M. (1970). The fine structure and function of the adult epidermis of two skin parasitic monogeneans, Entobdella soleae and Acanthocotyle elegans. Parasitology 60, 39–52.CrossRefGoogle ScholarPubMed
Nieland, M. L. (1968). Electron microscope observations on the egg of Taenia taeniaeformis. Journal of Parasitology 54, 957–69.CrossRefGoogle ScholarPubMed
Pugh-Humphreys, R. G. & Sinclair, W. (1970). Ultrastructural studies relating to the surface morphology of cultured cells. Journal of Cell Science 6, 477–84.CrossRefGoogle Scholar
Rees, G. (1937). The anatomy and encystment of Cercaria purpurae Lebour, 1911. Proceedings of the Zoological Society of London, Series B, 107, 65–73.CrossRefGoogle Scholar
Rees, G. (1948). A study of the effect of light, temperature and salinity on the emergence of Cercaria purpurae, Lebour from Nucella lapillus (L.). Parasitology 38, 228–42.CrossRefGoogle ScholarPubMed
Rees, G. (1966). Light and electron microscope studies of the redia of Parorchis acanthus, Nicoll. Parasitology 56, 589–602.CrossRefGoogle Scholar
Rees, G. (1967). The histochemistry of the cystogenous gland cells and cyst wall of Parorchis acanthus, Nicoll and some details of the morphology and fine structure of the cercaria. Parasitology 57, 87–110.CrossRefGoogle Scholar
Senft, A. W., Philpott, D. E. & Pelofsky, A. H. (1961). Electron microscope observations of the integument, flame cells and gut of Schistosoma mansoni. Journal of Parasitology 47, 217–29.CrossRefGoogle ScholarPubMed
Sjöstrand, F. S., Andersson-Cedergren, E. & Dewey, M. (1958). The ultrastructure of the intercalated discs of frog, mouse and guinea pig cardiac muscle. Journal of Ultrastructure Research 1, 271–87.CrossRefGoogle ScholarPubMed
Threadgold, L. T. (1963). The tegument and associated structures of Fasciola hepatica. Quarterly Journal of Microscopical Science 104, 505–12.Google Scholar
Threadgold, L. T. (1967). The ultrastructure of the animal cell. International Series of Monographs in Pure and Applied Biology, Zoology Division 37, 313 pp. London: Pergamon Press.Google Scholar
Threadgold, L. T. (1968). The tegument and associated structures of Haplometra cylindracea. Parasitology 58, 1–7.CrossRefGoogle ScholarPubMed