Hostname: page-component-7bb8b95d7b-w7rtg Total loading time: 0 Render date: 2024-09-13T14:03:03.292Z Has data issue: false hasContentIssue false

Studies on the life-cycle of Himasthla militaris (Trematoda: Echinostomatidae): influence of temperature and salinity on the life-span of the miracidium and the infection of the first intermediate host, Hydrobia ventrosa

Published online by Cambridge University Press:  06 April 2009

R. Vanoverschelde
Affiliation:
Laboratory of Zoophysiology, University of Ghent, Ghent, Belgium

Summary

The influence of temperature and salinity on miracidial longevity and miracidial infectivity of the digenean, Himasthla militaris, has been examined. At 14, 25 and 30 °C the half-life of the miracidia was 1200, 630 and 420 min respectively, and infection of the first intermediate host, Hydrobia ventrosa, only occurred at 25 and 30 °C, for both temperatures 52% became infected. In the range 2·1 to 34‰ (2·1, 4·2, 8·5, 17 and 34‰) the miracidia had a minimal and maximal half-life of 60 and 630 min in water with a salinity of 2·1 and 17‰ respectively, while the infection of the snail host was possible only in water with a salinity of 8·5 and 17‰.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1982

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

REFERENCES

Bennett, H. J. & Humes, A. G. (1939). Studies on the precercarial development of Stichorchis subtriquetrus (Trematoda: Paramphistomidae). Journal of Parasitology 25, 223–31.Google Scholar
Bennett, H. J. & Jenkins, L. L. (1950). The longevity of the miracidium of Cotylophoron cotylophorum. Proceedings of the Louisiana Academy of Sciences 13, 513.Google Scholar
Christensen, N. Ø., Nansen, P. & Frandsen, F. (1978). The influence of some physicochemical factors on the host-finding capacity of Fasciola hepatica miracidia. Journal of Helminthology 52, 61–7.CrossRefGoogle ScholarPubMed
Dewitt, W. B. (1955). Influence of temperature on penetration of snail hosts by Schistosoma mansoni miracidia. Experimental Parasitology 4, 271–7.CrossRefGoogle ScholarPubMed
Lampe, P. H. (1927). The development of Shistosoma mansoni. Proceedings of the Royal Society of Medicine 20, 1510–16.CrossRefGoogle Scholar
Porter, A. (1938). The larval Trematoda found in certain South African Mollusca with special reference to Schistosomiasis (bilharziasis). Publications from the South African Institute of Medical Research 8, 492 pp.Google Scholar
Prah, S. K. & James, C. (1977). The influence of physical factors on the survival and infectivity of miracidia of Schistosoma mansoni and S. haematobium. I. Effect of temperature and ultra-violet light. Journal of Helminthology 51, 7385.CrossRefGoogle ScholarPubMed
Schreiber, F. & Schubert, M. (1949). Results of exposure of the snail Australorbis glabratus to varying numbers of Schistosoma mansoni. Journal of Parasitology 35, 590–3.CrossRefGoogle ScholarPubMed
Standen, O. D. (1952). Experimental infection of Australorbis glabratus with Schistosoma mansoni. Annals of Tropical Medicine and Parasitology 46, 4853.CrossRefGoogle ScholarPubMed
Stirewalt, M. A. (1954). Effect of snail maintenance temperatures on development of Schistosoma mansoni. Experimental Parasitology 3, 504–17.CrossRefGoogle ScholarPubMed
Styczynska-Jurewicz, E. (1964). The influence of a brackish environment on the development and the viability of miracidia of Fasciola hepatica. Acta Parasitologica Polonica 13, 483–97.Google Scholar
Vanoverschelde, R. (1981). Studies on the life-cycle of Himasthla militaris (Trematoda: Echinostomatidae): influence of salinity and temperature on egg development and miracidial emergence. Parasitology 82, 459–65.CrossRefGoogle Scholar
Willmott, S. (1952). The development and morphology of the miracidium of Paramphistomum hiberniae. Journal of Helminthology 26, 123–32.CrossRefGoogle Scholar