Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-15T07:12:23.968Z Has data issue: false hasContentIssue false
  • English
  • Français

Cryptocotyle lingua (Creplin) (Digenea: Heterophyidae): observations on the morphology of the redia, with special reference to the birth papilla and release of cercariae

Published online by Cambridge University Press:  06 April 2009

S. W. B. Irwin ,
L. T. Threadgold  and
Nicola M. Howard
S. W. B. Irwin
Affiliation:
School of Life Sciences, Ulster College, The Northern Ireland Polytechnic, Jordanstown, Co. Antrim, Northern Ireland
L. T. Threadgold
Affiliation:
Department of Zoology, The Queen's University, Belfast 9, Northern Ireland
Nicola M. Howard
Affiliation:
School of Life Sciences, Ulster College, The Northern Ireland Polytechnic, Jordanstown, Co. Antrim, Northern Ireland
Get access Rights & Permissions [Opens in a new window]

Summary

Rediae of Cryptocotyle lingua were studied using transmission and stereoscan electron microscopy. The mouth is surrounded by numerous ciliated sensory structures. Posteriorally, the body wall is concentrically folded and its surface area is greatly increased by the closely ridged configuration of the outer membrane of the tegument. Attached to the surface, especially at the anterior end, are numerous, small spherical vesicles. At the posterior end there is a retractable papilliform process. The appearance of the surface of the birth papilla is variable. The birth pore is lined by an epithelium which is specialized to withstand extreme distortion. A single cilium is frequently visible in the birth pore lumen. The release of each cercaria is preceded by the emission of a tiny drop of fluid from the birth pore. It is suggested that this fluid acts as a lubricant to the passage of the cercaria through the pore.

Type
Research Article
Information
Parasitology , Volume 76 , Issue 2 , April 1978 , pp. 193 - 199
Copyright
Copyright © Cambridge University Press 1978

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

REFERENCS

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
Chapman, H. D. & Wilson, R. A. (1970). The distribution and fine structure of the integumentary papillae of the cercaria of Himasthla secunda (Nicoll). Parasitology 61, 219–27.CrossRefGoogle ScholarPubMed
Halton, D. W. & Morris, G. P. (1969). Occurrence of cholinesterase and ciliated sensory structures in a fish gill fluke Diclidophora merlangi (Trematoda: Monogenea). Zeitschrift für Parasitenkunde 33, 21–30.CrossRefGoogle Scholar
Harris, M. P. (1964). The incidence of some species of Trematoda in three species of Larus gulls in Wales. Ibis 106, 532–6.CrossRefGoogle Scholar
Irwin, S. W. B. & Prentice, H. J. (1976). The parasitic fauna in the digestive tracts of three Herring gulls, Larus argentatus, taken from Strangford Lough. Irish Naturalists Journal 18, 281–2.Google Scholar
Køle, M. (1971). On the histochemistry and ultrastructure of the redia of Neophasis lageniformis (Lebour, 1910) (Trematoda: Acanthocolpidae). Ophelia 9, 113–43.Google Scholar
Krupa, P. L., Bal, A. K. & Cousineau, G. H. (1967). Ultrastructure of the redia of Cryptocotyle lingua. Journal of Parasitology 53, 725–34.CrossRefGoogle ScholarPubMed
Krupa, P. L., Cousineau, G. H. & Bal, A. K. (1968). Ultrastructural and histochemical observations in the body wall of Cryptocotyle lingua rediae (Trematoda). Journal of Parasitology 54, 900–8.CrossRefGoogle Scholar
Lyons, K. M. (1969). Sense organs of monogenean skin parasites ending in a typical cilium. Parasitology 59, 611–23.CrossRefGoogle Scholar
Moore, M. N. & Halton, D. W. (1975). A histochemical study of the rediae and cercariae of Fasciola hepatica. Zeitschrift für Parasitenkunde 47, 45–54.CrossRefGoogle ScholarPubMed
Morris, G. P. & Threadgold, L. T. (1967). A presumed sensory structure associated with the tegument of Schistosoma mansoni. Journal of Parasitology 53, 537–9.CrossRefGoogle ScholarPubMed
Reader, T. A. J. (1972). Ultrastructural and cytochemical observations on the body wall of the redia of Sphaeridiotrema globulus (Rudolphi, 1819). Parasitology 65, 537–46.CrossRefGoogle Scholar
Rees, G. (1966). Light and electron microscope studies of the redia of Parorchis acanthus, Nicoll. Parasitology 56, 589–602.CrossRefGoogle 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, 479–88.CrossRefGoogle Scholar
Rees, G. (1974). The ultrastructure of the body wall and associated structures of the cercaria of Cryptocotyle lingua (Creplin) (Digenea: Heterophyidae) from Littorina littorea (L.). Zeitschrift für Parasitenkunde 44, 239–365.CrossRefGoogle Scholar
Rothschild, M. (1939). A note on the life cycle of Cryptocotyle lingua (Creplin) 1825 (Trematoda). Novitates Zooligicae 61, 178–80.Google Scholar
Stunkard, H. W. (1930). The life history of Cryptocotyle lingua (Creplin), with notes on the physiology of the metacercaria. Journal of Morphology 50, 143–90.CrossRefGoogle Scholar
Threlfall, W. (1967). Studies on the helminth parasites of the herring gull, Larus argentatus Pontopp, in Northern Caernarvonshire and Anglesey. Parasitology 57, 431–53.CrossRefGoogle ScholarPubMed