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The effects of temperature and other factors upon the establishment and survival of Pomphorhynchus laevis (Acanthocephala) in goldfish, Carassius auratus

Published online by Cambridge University Press:  06 April 2009

C. R. Kennedy
C. R. Kennedy
Affiliation:
Department of Biological Sciences, The University, Exeter
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Extract

Goldfish were experimentally infected with different population densities of the acanthocephalan Pomphorhynchus laevis, and maintained at different temperatures. The density of infection had no effect upon the establishment of the parasite, but a 12°C rise in water temperature reduced the recovery after one week by 30%. Thereafter there was a continuous loss of parasites during the course of infection. The rate of this loss was independent of worm burden and temperature, but increased under conditions of host starvation.Both male and female parasites attached themselves in the same region of the alimentary tract, with a mean position about 19% along its length. They remained in that region throughout the course of infection, and the population did not migrate down the intestine with increasing age. In starved fish, the region of attachment was nearer the oesophagus, at low temperatures nearer the rectum, and when crowded the occupied region extended anteriorly. Male worms were unable to establish as easily as females, but once established survived better, and the sex ratio after two weeks was in favour of males.The results are compared with the results of studies on other acanthocephalans and on fish-cestode systems. It is recognized that although the establishment of fish acanthocephala is affected by temperature to a lesser extent than that of some fish cestodes, temperature in conjunction with changes in fish diet is a major control upon the flow of parasites through acanthocephalan-fish parasite systems. The significance of the results to the interpretation of data based on field observations is discussed.

Type
Research Article
Information
Parasitology , Volume 65 , Issue 2 , October 1972 , pp. 283 - 294
Copyright
Copyright © Cambridge University Press 1972

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References

Awachie, J. B. E., (1966). The development and life history of Echinorhynehus truttae Schrank, 1788 (Acanthocephala). Journal of Helminthology 40, 11–32.CrossRefGoogle ScholarPubMed
Chappell, L. H., (1969). The parasites of the three-spined stickleback Gasterosteus aculeatus L. from a Yorkshire pond. I. Seasonal variation of parasite fauna. Journal of Fish Biology 1, 137–52.Google Scholar
Chubb, J. C., (1964). Occurrence of Echinorhynehus clavula (Dujardin, 1845) nee Haman, 1892 (Aeanthocephala) in the fish of Llyn Tegid (Bala Lake), Merionethshire. Journal of Parasitology 50, 52–9.Google Scholar
Crompton, D. W. T., & Harrison, J. H., (1965). Observations on Polymorphus minutus (Goeze, 1782) (Acanthocephala) from a wildfowl reserve in Kent. Parasitology 55, 345–55.Google Scholar
Crompton, D. W. T., & Whitfield, P. J., (1968). The course of infection and egg production of Polymorphus minutus (Acanthocephala) in domestic ducks. Parasitology 58, 231–46.Google Scholar
Harris, J. E., (1970). Precipitin production by chubb (Leuciscus cephalus) to an intestinal helminth. Journal of Parasitology 56, 1035.Google Scholar
Hine, P. M., (1970). Studies on the parasites of some freshwater fish. Ph.D. Thesis, University of Exeter.Google Scholar
Hopkins, C. A., (1959). Seasonal variations in the incidence and development of the cestode Proteocephalus filicollis (Rud. 1810) in Gasterosteus aculeatus (L. 1766). Parasitology 49, 529–42.Google Scholar
Kennedy, C. R., (1967). Pomphorhynchus laevis in dace of the River Avon. Proceedings of the Third British Coarse Fish Conference, pp. 24–6.Google Scholar
Kennedy, C. R., (1968). Population biology of the cestode CaryophyUaeus laticeps (Pallas, 1781) in dace, Leuciscus leuciscus L., of the River Avon. Journal of Parasitology 54, 538–43.Google Scholar
Kennedy, C. R., (1969). Seasonal incidence and development of the cestode CaryophyUaeus laticeps (Pallas) in the River Avon. Parasitology 59, 783–94.CrossRefGoogle ScholarPubMed
Kennedy, C. R., (1970). The population biology of helminths of British freshwater fish. In Aspects of Fish Parasitology, Symposia of the British Society for Parasitology 8, 145–59.Google Scholar
Kennedy, C. R., (1971). The effect of temperature upon the establishment and survival of the cestode Caryophyllaeus laticeps in orfe, Leuciscus idus. Parasitology 63, 59–66.CrossRefGoogle ScholarPubMed
Kennedy, C. R., & Hine, P. M., (1969). Population biology of the cestode Proteocephalus torulosus (Batsch) in dace, Leuciscus leuciscus (L.) of the River Avon. Journal of Fish Biology 1, 209–19.CrossRefGoogle Scholar
Kennedy, C. R., & Walker, P. J., (1969). Evidence for an immune response by dace, Leuciscus leuciscus, to infections by the cestode Caryophyllaeus laticeps. Journal of Parasitology 55, 579–82.Google Scholar
Nicholas, W. L., & Hynes, H. B. N., (1958). Studies on Polymorphus minutus (Goeze, 1782) (Acanthocephala) as a parasite of the domestic duck. Annals of Tropical Medicine and Parasitology 52, 36–47.CrossRefGoogle ScholarPubMed
Tedla, S., & Fernando, C. H., (1970). Some remarks on the ecology of Echinorhynchus salmonis Muller 1784. Canadian Journal of Zoology 48, 317–21.Google Scholar
Walkey, M., (1967). The ecology of Neoechinorhynchus rutili (Muller). Journal of Parasitology 53, 795–804.Google Scholar