Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-12-01T04:35:51.706Z Has data issue: false hasContentIssue false
  • English
  • Français

Hatching and survival characteristics of Cyathocotyle bushiensis Khan 1962 (Digenea) eggs and miracidia

Published online by Cambridge University Press:  06 April 2009

L. Ménard  and
M. E. Scott
L. Ménard
Affiliation:
Institute of Parasitology, McGill University, 21 111 Lakeshore Road, Ste-Anne-de-Bellevue, Québec H9X 1CO, Canada
M. E. Scott*
Affiliation:
Institute of Parasitology, McGill University, 21 111 Lakeshore Road, Ste-Anne-de-Bellevue, Québec H9X 1CO, Canada
*
*Reprint requests to: Dr M. E. Scott.
Get access Rights & Permissions [Opens in a new window]

Summary

Cyathocotyle bushiensis Khan 1962 is a digenean intestinal parasite of ducks that appears to be involved in seasonal mortality of the definitive host. Temperature dependence of egg hatching and miracidial survival at 25%C were experimentally investigated as part of a study on transmission of the larval stages. Maximum percentage of hatching was obtained at a temperature of 25%C, at which the average hatching time was 21·7 days. The average hatching time decreased linearly from 38·9 days to 9·8 days between 18 and 28%C. Eggs exposed to cold (4%C) prior to incubation at 25%C were significantly less successful in hatching than fresh eggs incubated at the same temperature. Their hatching percentage was much reduced and their average hatching time was increased. Similarly, eggs collected in late autumn (as opposed to summer) and incubated at 23%C had significantly lower hatching success and significantly increased average hatching time. At 25%C, the average life-span of the miracidia was 8·8 h. These results are compared with similar data from other digenean species and their significance is discussed in relation to transmission to the first intermediate host in climatic conditions prevalent in endemic areas.

Type
Research Article
Information
Parasitology , Volume 95 , Issue 2 , October 1987 , pp. 355 - 362
Copyright
Copyright © Cambridge University Press 1987

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

Anderson, R. M., Mercer, J. G., Wilson, R. A. & Carter, N. P. (1982). Transmission of Schistosoma mansoni from man to snail: experimental studies of miracidial survival and infectivity in relation to larval age, water temperature, host size and host age. Parasitology 85, 339–60.Google Scholar
Anderson, R. M. & Whitfield, P. J. (1975). Survival characteristics of the free-living cercarial population of the ectoparasitic digenean Transversotrema patialensis (Soparker, 1924). Parasitology 70, 295–310.CrossRefGoogle Scholar
Bundy, D. A. P. (1981). Survival characteristics of the free-living miracidial population of Transversotrema patialense (Soparkar) (Digenea: Transversotrematidae). Journal of Parasitology 67, 531–4.Google Scholar
C.T.A.R.S [Comité technique d'aménagement de la rivière du Sud] (1984). Plan de Conservation et de Mise en Valeur de la Rivière du Sud. G., Massé (ed.), pp. 114. Québec: Ministère du Loisir, de la Chasse et de la Pěche.Google Scholar
Erasmus, D. A. (1967 a). Histochemical observations on the structure and composition of the cyst wall enclosing the metacercaria of Cyathocotyle bushiensis Khan 1962 (Trematoda: Strigeoidea). Journal of Helminthology 41, 11–14.Google Scholar
Erasmus, D. A. (1967b). The host-parasite interface of Cyathocotyle bushiensis Khan 1962 (Trematoda: Strigeoidea). II. Electron microscope studies of the tegument. Journal of Parasitology 53, 703–14.Google Scholar
Erasmus, D. A. (1967 c). Ultrastructural observations on the reverse bladder system of Cyathocotyle bushiensis Khan 1962 (Strigeoidea: Trematoda) with special reference to lipid excretion. Journal of Parasitology 53, 525–36.CrossRefGoogle Scholar
Erasmus, D. A. (1968). The host-parasite interface of Cyathocotyle bushiensis Khan 1962 (Trematoda: Strigeoidea). III. Electron microscope observations of non-specific phosphatase activity. Parasitology 58, 371–5.CrossRefGoogle Scholar
Erasmus, D. A. (1972). The Biology of Trematodes. London: Edward Arnold.Google Scholar
Erasmus, D. A. & Bennett, L. J. (1965). A study of some factors affecting excystation in vitro of the metacercarial stages of Holostephanus lühei Szidat 1938 and Cyathocotyle bushiensis Khan 1962 (Strigeida: Trematoda). Journal of Helminthology 39, 185–96.CrossRefGoogle Scholar
Erasmus, D. A. & Ohman, C. (1963). The structure and function of the adhesive organ in strigeid trematodes. Annals of the New York Academy of Sciences 113, 7–35.CrossRefGoogle ScholarPubMed
Erasmus, D. A. & Ohman, C. (1965). Electron microscope studies of the gland cells and host parasite interface of the adhesive organ of Cyathocotyle bushiensis Khan 1962. Journal of Parasitology 51, 761–9.Google Scholar
Gibson, G. G., Broughton, E. & Choquette, L. P. E. (1972). Waterfowl mortality caused by Cyathocotyle bushiensis Khan 1962 (Trematoda: Cyathocotylidae), St-Lawrence River, Quebec. Canadian Journal of Zoology 50, 1351–6.CrossRefGoogle ScholarPubMed
Khan, D. (1962). Studies on larval trematodes infecting freshwater snails in London (U.K.) and some adjoining areas. IV. The cercariae of the ‘Vivax’ group and the life history of Cercaria bushiensis n. sp (= Cyathocotyle bushiensis n. sp). Journal of Helminthology 36, 67–94.Google Scholar
Menard, L. & Scott, M. E. (1987). Seasonal occurrence of Cyathocotyle bushiensis Khan 1962 (Digenea: Cyathocotylidae) metacercariae in the intermediate host Bithynia tentaculata L. (Gastropoda: Prosobranchia). Canadian Journal of Zoology (in the Press).CrossRefGoogle Scholar
Rohlf, F. J. (1983). Biom-PC: A Package of Statistical Programs to Accompany the Text Biometry. State University of New York.Google Scholar
Rohlf, F. J. & Sokal, R. R. (1981). Statistical Tables, 2nd ed.New York: W. H. Freeman.Google Scholar
Rowcliffe, S. A. & Ollerenshaw, C. B. (1960). Observations on the bionomics of the eggs of Fasciola hepatica. Annals of Tropical Medicine and Parasitology 54, 172–81.Google Scholar
Smith, G. & Grenfell, B. T. (1984). The influence of water temperature and pH on the survival of Fasciola hepatica miracidia. Parasitology 88, 97–104.CrossRefGoogle ScholarPubMed
Sokal, R. S. & Rohlf, F. J. (1981). Biometry. 2nd ed.New York: W. H. Freeman.Google Scholar
Vincent, B. & Harvey, M. (1985). Dynamique de deux populations du Gastéropode Bithynia tentaculata. Verhandlungen der Internationalen Vereinigung für theoretische und angewandte Limnologie 22, 3288–91.Google Scholar
Vincent, B. & Vaillancourt, G. (1980). Régime thermique de l'eau de la zone littorale dans le haut estuaire du St-Laurent. Eau du Québec 13, 120–3.Google Scholar
Wilson, R. A., Smith, G. & Thomas, M. R. (1982). Fascioliasis. In Population Dynamics of Infectious Diseases: Theory and Applications, (ed. R.M., Anderson), pp. 262–319. London: Chapman and Hall.Google Scholar