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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
R. Vanoverschelde
Affiliation:
Laboratory of Zoophysiology, University of Ghent, Ghent, Belgium
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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
Information
Parasitology , Volume 84 , Issue 1 , February 1982 , pp. 131 - 135
Copyright
Copyright © Cambridge University Press 1982

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References

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