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Studies on the host specificity of the eyefluke, Diplostomum spathaceum, in brown and rainbow trout

Published online by Cambridge University Press:  06 April 2009

Christine Betterton
Christine Betterton
Affiliation:
Department of Zoology and Comparative Physiology, Queen Mary College, Mile End Road, London E1 4NS, U.K.
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Extract

Trout collected from the Hanningfield Trout Farm in Essex, England, were found to be infected with Diplostomum spathaceum. Yearling rainbow trout were blinded with heavy infections of eyefluke, whereas brown trout of the same age carried one-tenth the number of flukes and were clear eyed. Both species were reared under identical conditions, in parallel rearing channels which received water from a common source. Samples showed that young fish exhibited a similar differential in their infestations, and that rainbow trout did not appear to be age-resistant. Laboratory infections produced by exposure of fish to suspensions of cercariae and injection of cercariae into the body cavity reflected the field results, indicating that ecological factors were not involved. Recovery of cercariae from host tissues, and histological observations of similar numbers entering both hosts, indicated that cercariae were able to survive penetration. Excised eye preparations were equally susceptible to infection. Two cm fry of both species were shown to be highly susceptible. Migration in brown trout took 3 h longer than in rainbow trout of the same size, many cercariae being found in the heart during this time. Two mechanisms of insusceptibility were suggested: (1) a greater impenetrability of brown trout tissues; (2) a disorientation of migrating cercariae in brown trout.

Type
Research Article
Information
Parasitology , Volume 69 , Issue 1 , August 1974 , pp. 11 - 29
Copyright
Copyright © Cambridge University Press 1974

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References

REFERENCES

Betterton, C. (1973). Ph.D. Thesis. University of London.Google Scholar
Clegg, J. A. & Smithers, S. R. (1968). Death of schistosome cercariae during penetration of the skin. II. Penetration of mammalian skin by Schistosoma mansoni. Parasitology 58, 111–28.CrossRefGoogle ScholarPubMed
Davis, D. J. (1936). Pathological studies on the penetration of the cercaria of the strigeid trematode, Diplostomum flexicaudum. Journal of Parasitology 22, 329–37.Google Scholar
Davson, H. (1969). The Eye. Vol. 1: Vegetative Physiology and Biochemistry. New York and London: Academic Press.Google Scholar
Dubois, G. (1957). La spécificité de fait chez les Strigeida (Trematoda). Premier Symposium sur la spécificité parasitaire des parasites de vertébrés. International Union of Biological Sciences, Série B 32, 213–27.Google Scholar
Erasmus, D. A. (1958). Studies on the morphology, biology and development of a strigeid cercaria (Cercaria X Baylis 1930). Parasitology 48, 312–34.CrossRefGoogle ScholarPubMed
Erasmus, D. A. (1959). The migration of Cercaria X Baylis (Strigeida) within the fish intermediate host. Parasitology 49, 173–90.CrossRefGoogle ScholarPubMed
Ferguson, M.S. (1943). Migration and localisation of an animal parasite within the host. Journal of Experimental Zoology 93, 375–403.Google Scholar
Ferguson, M. S. & Hayford, R. A. (1941). The life-history and control of an eye fluke (an account of a serious hatchery disease caused by a parasitic worm). Progressive Fish Culturist Memorandum 54, 1–131.Google Scholar
Griffiths, R. B. (1953). Further observations on the penetration of mammalian skin by the cercariae of Schistosoma mansoni with special reference to the effects of mass invasion. Annals of Tropical Medicine and Parasitology 47, 86–94.Google Scholar
Hale, L. J. (1965). Biological Laboratory Data. London: Science Paperbacks and Methuen & Co. Ltd.Google Scholar
Hoffert, J. R. (1966). Observations on ocular fluid dynamics and carbonic anhydrase in tissues of lake trout (Salvelinus namaycush). Comparative Biochemistry and Physiology 17, 107–14.Google Scholar
Johnson, J. A. (1971). The migration of Cotylurus erraticus cercariae (Trematoda: Strigeidae) in rainbow trout (Salmo gairdneri) and their effects on the host. Journal of Parasitology 57, 244–51.CrossRefGoogle Scholar
Kagan, I. G. & Meranze, D. R. (1955). The histopathology of immune and normal mouse skin exposed to cercariae of Schistosomatium douthitti. Journal of Infectious Diseases 97, 187–93.Google Scholar
Lee, A. B. (1928). The Microtomist's Vade Mecum. Churchill: London.Google Scholar
Lewert, R. M. (1958). Invasiveness of helminth larvae. Rice Institute Pamphlet 45, 97–113.Google Scholar
Rushton, W. (1937). Blindness of freshwater fish. Nature, London 140, 1014.Google Scholar
Rushton, W. (1938). Blindness in freshwater fishes. Nature, London 141, 289.CrossRefGoogle Scholar
Skrjabin, K. I. (1964). Trematodes of Animals and Man. Essentials of Trematology, vol. 17. Jerusalem: Israel Program for Scientific Translations.Google Scholar
Smithers, S. R. & Terry, R. J. (1969). The immunology of schistosomiasis. In Advances in Parasitology, vol. 7 (ed. Dawes, B.), pp. 41–95. New York and London: Academic Press.Google Scholar
Standen, O. D. (1953). The penetration of the cercariae of Schistosoma mansoni into the skin and lymphatics of the mouse. Transactions of the Royal Society of Tropical Medicine and Hygiene 47, 292–8.Google Scholar
Stirewalt, M. A. (1959). Chronological analysis, pattern and rate of migration of Schistosoma mansoni in body, ear and tail skin in mice. Annals of Tropical Medicine and Parasitology 53, 400–13.Google Scholar
Ulmer, M. J. (1970). Site-finding behaviour in helminths in intermediate and definitive hosts. In Ecology and Physiology of Parasites (ed. Fallis, A. M.), pp. 123–59. Toronto and Buffalo: University of Toronto Press.Google Scholar