Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-28T08:20:50.388Z Has data issue: false hasContentIssue false
  • English
  • Français

Locomotion of the cercaria of Parorchis acanthus, Nicoll and the ultrastructure of the tail

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

The cercaria of Parorchis acanthus swims by a series of spasmodic ventral flexions of the body moving with the dorsal surface of the body foremost. The wave of contraction continues along the tail which therefore moves dorso-ventrally. Creeping movements precede cyst formation. The structure of the tail is admirably suited to swimming movements and to rapid shortening and lengthening. The wall is provided with circular and longitudinal muscles and abundant mitochondria. The centre of the tail contains fluid in which is a network of large myoblasts the processes of which overlap and probably slide over one another during the tail movements. Glands opening into the terminal tail invagination secrete an adhesive substance consisting of mucoprotein and glycoprotein which together with the vesicular secretion around the aperture enables the tail tip to attach itself to the substratum.

I would like to express my sincere thanks to Dr I. ap Gwynn of this department for invaluable help in the preparation of the electron-micrographs and Mr R. A. Moore and Mr M. C. Bibby for technical assistance.

Type
Research Article
Information
Parasitology , Volume 62 , Issue 3 , June 1971 , pp. 489 - 503
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

Belton, C. M. & Harris, A. J. (1967). Fine structure of the cuticle of the cercaria of Acanthatrium oregonense (Macy). Journal of Parasitology 53, 715–24.CrossRefGoogle ScholarPubMed
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. (1966). The ultrastructure of the frog bladder fluke, Gorgoderina sp. Journal of Parasitology 52, 926–34.Google Scholar
Cardell, R. R. (1962). Observations on the ultrastructure of the body of the cercaria of Himasthla quissetensis (Miller & Northup, 1926). Transactions of the American Microscopical Society 81, 124–31.CrossRefGoogle Scholar
Cardell, R. R. & Philpott, D. E. (1960). The ultrastructure of the tail of the cercaria of Himasthla quissetensis (Miller & Northup, 1926). Transactions of the American Microscopical Society 79, 442–50.CrossRefGoogle Scholar
Dixon, K. E. (1965). The structure and histochemistry of the cyst wall of the metacercaria of Fasciola hepatica L. Parasitology 55, 215–26.CrossRefGoogle ScholarPubMed
Dougherty, W. J. (1967). Perforated Beem capsules for precipitate-free transfer of ultra thin sections through staining solutions. Stain Technology 42, 104–5.Google Scholar
Kruidenier, F. J. & Vatter, A. E. (1960). Microstructure of muscles in cercariae of the digenetic trematodes Schistosoma mansoni and Tetrapapillatrema concavocorpa. Proceedings of the 4th International Conference on Electron Microscopy 2, 332–5.Google Scholar
Lautenschlager, E. W. & Cardell, R. R. (1961). Ultrastructure of the cuticular region and flame-cell system of the metacercaria Diplostomulum trituri. Journal of Parasitology 47, 4, Section 2, 46.Google Scholar
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.Google Scholar
Lumsden, R. D. & Byram, J. (1967). The ultrastructure of cestode muscle. Journal of Parasitology 53, 326–42.CrossRefGoogle ScholarPubMed
McManus, J. F. A. (1946). Histological demonstration of mucin after periodic acid. Nature 158, 202.CrossRefGoogle ScholarPubMed
Pearse, A. G. E. (1961). Histochemistry: Theoretical and Applied, 998 pp., 2nd ed.London: J. and A. Churchill Ltd.Google Scholar
Pearson, J. (1956). Studies on the life cycles and morphology of the larval stages of Alaria arisaemoides Augustine & Uribe, 1927 and Alaria canis La Rue & Fallis, 1936 (Trematoda: Diplostomidae). Canadian Journal of Zoology 34, 295–387.CrossRefGoogle Scholar
Perry, M. M. (1967). Identification of glycogen in thin sections of amphibian embryos. Journal of Cell Science 2, 257–64.Google Scholar
Rees, G. (1937). The anatomy and encystment of Cercaria purpurae Lebour, 1911. Proceedings of the Zoological Society of London 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. (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.Google Scholar
Rees, G. (1971). The ultrastructure of the epidermis of the redia and cercaria of Parorchis acanthus, Nicoll. A study by scanning and transmission electron-microscopy. Parasitology 62, 479–488.CrossRefGoogle Scholar
Reynolds, E. S. (1963). The use of lead citrate at high pH as an electron opaque stain in electron microscopy. Journal of Cell Biology 17, 208–12.Google Scholar
Vickers, G. G. (1940). On the anatomy of Cercaria macrocerca from Sphaerium corneum. Quarterly Journal of Microscopical Science 82, 311–26.Google Scholar