Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-06T03:53:44.827Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on Crepidostomum metoecus (Braun) and C. farionis (Müller), parasitic in Salmo trutta L. and S. salar L. in Britain

Published online by Cambridge University Press:  06 April 2009

J. D. Thomas
J. D. Thomas
Affiliation:
Zoology Department, University College of Ghana, Accra, Ghana
Get access Rights & Permissions [Opens in a new window]

Extract

1. Crepidostomum farionis (Müller, 1784) and C. metoecus (Braun, 1900) were found to occur together in the same host fish, Salmo trutta L., S. salar L. and Anguilla anguilla (L.) in mid-Wales. It is believed that the latter species constituted an accidental host.

2. C. metoecus is recorded in Britain for the first time.

3. There was some evidence of a habitat isolation in individual fish as C. metoecus occurred predominantly within the pyloric caeca, while C. farionis usually occupied a more posterior station in the intestine.

4. A detailed description is given of G. metoecus and the salient features of this species are compared with those of C. farionis.

5. The two species of Crepidostomum commonly occurred in large numbers in their fish hosts, individual fish harbouring up to 157 worms. No lesions attributable to Crepidostomum were, however, detected and there was no evidence of pathogenicity.

6. It would appear that the eel is physiologically immune to both species of Crepidostomum and that the salmon parr is partially resistant.

7. The degree of infestation of trout and parr with both the Crepidostomum species is at a maximum during the winter months and at a minimum in the summer months. This seasonal variation can be attributed to a periodicity in the swarming of the cercariae.

8. There is no evidence of age resistance or acquired immunity of the trout to infestation by Crepidostomum species.

Type
Research Article
Information
Parasitology , Volume 48 , Issue 3-4 , November 1958 , pp. 336 - 352
Copyright
Copyright © Cambridge University Press 1958

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

Baer, J. G. (1952). Ecology of Animal Parasites. Urbana: University of Illinois Press.Google Scholar
Bangham, R. V. (1944). Parasites of North Wisconsin fish. Trans. Wis. Acad. Sci. Arts Lett. 36, 291–325.Google Scholar
Baylis, H. A. (1928). Records of some parasitic worms from British vertebrates. Ann. Mag. Nat. Hist. (10), 1 329–43.CrossRefGoogle Scholar
Baylis, H. A. (1931). Gammarus pulex as an intermediate host for trout parasites. Ann. Mag. Nat. Hist. (10), 7, 431–5.CrossRefGoogle Scholar
Baylis, H. A. (1939). Further records of parasitic worms from British vertebrates. Ann. Mag. Nat. Hist. (11), 4 473–98.CrossRefGoogle Scholar
Blanchard, R. (1891). Notices helminthologiques (2me série). Mém. Soc. Zool. Fr. 4, 420–9.Google Scholar
Braun, M. (1900 a). Einige Bemerkungen über die Fascioliden der Chiroptera. Zool. Anz. 23, 387–91.Google Scholar
Braun, M. (1900 b). Trematoden der Chiroptera. Ann. naturh. (Mus.) Hofmus., Wien, 15, 217–36.Google Scholar
Brown, F. J. (1927). On Crepidostomum farionis Müll. ( = Stephanophiala laureata Zeder), a distome parasite of the trout and grayling. 1. The life history. Parasitology, 19, 86–99.CrossRefGoogle Scholar
Cameron, T. W. M. (1934). The Internal Parasites of Domestic Animals. London.Google Scholar
van Cleave, H. J. & Müller, J. F. (1934). Parasites of Oneida Lake fishes. Part 3. A biological and ecological survey of the worm parasites. Roosevelt Wild Life Ann. 3, 1–334.Google Scholar
Corbett, M. P. (1955). Occurrence of two species of Crepidostomum in brown trout (Salmo trutta L.) from North-East Ireland with special reference to Crepidostomum metoecus Braun 1900. Parasitology, 45, 186–8.CrossRefGoogle ScholarPubMed
Crawford, W. W. (1943). Colorado trematode Studies. I. A further contribution to the life history of Crepidostomum farionis (Müller). J. Parasit. 29, 379–84.CrossRefGoogle Scholar
Dawes, B. (1946). The Trematoda. Cambridge University Press.Google Scholar
Essex, H. E. & Hunter, G. W. (1926). A biological study of fish parasites from the central states. Trans. Ill. Acad. Sci. 19, 151–81.Google Scholar
Frankland, H. M. T. (1955). The life history and bionomics of Diclidophora denticulata. Parasitology, 45, 313–51.CrossRefGoogle ScholarPubMed
Hopkins, S. H. (1934). The Papillose Allocreadiidae. Illinois Biol. Monogr. 13, 1–80.Google Scholar
Looss, A. (1902). Über neue und bekannte Trematoden aus Seeschildkröten. Zool. Jber. 16, 411–889.Google Scholar
Nicoll, W. (1909). Studies on the structure and classification of the digenetic trematodes. Quart. J. Micr. Sci. 53, 391–487.Google Scholar
Nicoll, W. (1924). A reference list of the trematode parasites of British freshwater fishes. Parasitology, 16, 127–44.CrossRefGoogle Scholar
Nöller, W. (1928). Zu welchem Trematoden gehört Cercaria arhopalocerca Nöller 1925. S.B. Ges. naturf. Fr. Berl. 1927, 8–10, 162–4.Google Scholar
Nybelin, O. (1933). Crepidostomum suecicum n.sp., ein Trematode mit ungewöhnlich weiter morphologischer Variationsbreite. Ark. Zool. 25B (1), 1–6.Google Scholar
Odhner, T. (1905). Die Trematoden des arktischen Gebietes. Fauna arct., Jena, 4, 291–372.Google Scholar
Olsson, P. (1876). Bidrag till skandinaviens helminthfauna. K. svenska VetenskAkad. Handl. 14, 1–35.Google Scholar
Pearse, A. S. (1924). Observations on parasitic worms from Wisconsin fishes. Trans. Wis. Acad. Sci. Arts Lett. 21, 147–160.Google Scholar
Rawson, D. (1952). The occurrence of parasitic worms in British freshwater fishes. Ann. Mag. Nat. Hist. (12), 5 877–87.CrossRefGoogle Scholar
Southern, R. (1912). Clare Island Survey, pt. 56, Platyhelmia. Proc. R. Irish Acad. 31, 17.Google Scholar
Taliaferro, W. H. (1940). The mechanism of acquired immunity in infections with parasitic worms. Physiol. Rev. 20, 469–92.CrossRefGoogle Scholar
Thomas, J. D. (1954). The food, growth and helminth parasites of trout (Salmo trutta L.) from four contrasted habitats with some similar observations on the salmon parr (Salmo solar L.) and eels (Anguilla anguilla (L.)). Ph.D. Thesis, University College of Wales, Aberystwyth.Google Scholar