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The temperature threshold for development of Elaphostrongylus rangiferi in the intermediate host: an adaptation to winter survival?

Published online by Cambridge University Press:  06 April 2009

J. Schjetlein  and
A. Skorping
J. Schjetlein
Affiliation:
Department of Ecology/Zoology, IBG, University of Tromso, N-9037 Tromso, Norway
A. Skorping
Affiliation:
Department of Ecology/Zoology, IBG, University of Tromso, N-9037 Tromso, Norway
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Summary

To test the hypothesis that the relatively high developmental temperature threshold of the parasitic nematode Elaphostrongylus rangiferi in the intermediate snail host is an adaptation to minimize larval mortality during winter, an experiment was set up in which snails of the species Arianta arbustorum were experimentally infected with the parasite. The snails were divided into 3 groups known to contain 1st, 2nd or 3rd-stage larvae, and incubated at 3 °C for an experimental period of 18 weeks. First-stage larvae showed a significantly higher survival rate within snails than 2nd or 3rd-stage larvae. We also found that snails carrying 1st-stage larvae survived better than snails with other larval stages. It is concluded that if the nematode has started development before the hibernation, this has a real and significant effect on the risk of dying. The high developmental threshold is therefore likely to be an adaptation to reduce the chance of hibernating as developing larvae during long periods of low temperatures.

Keywords

nematodesdevelopmenttemperaturesurvivaloverwinteringElaphostrongylus rangiferiintermediate hostreindeer.
Type
Research Article
Information
Parasitology , Volume 111 , Issue 1 , July 1995 , pp. 103 - 110
Copyright
Copyright © Cambridge University Press 1995

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References

REFERENCES

Anderson, R. M. (1992). Nematode Parasites of Vertebrates, their Development and Transmission. Wallingford, UK: CAB International.Google Scholar
Croll, N. A. (1972). Feeding and lipid synthesis of Ancylostoma tubaeforme preinfective larvae.. Parasitology 64, 369–78.CrossRefGoogle ScholarPubMed
Gerichter, Ch. B. (1948). Observations on the life history of lung nematodes using snails as intermediate hosts. American Journal of Veterinary Research 9, 109–12.Google Scholar
Halvorsen, O. & Skorping, A. (1982). The influence of temperature on growth and development of the nematode Elaphostrongylus rangiferi in the gastropods Arianta arbustorum and Euconulus fulvu. Oikos 38, 258–90.CrossRefGoogle Scholar
Kassai, T. (1958). Larvae of protostrongylins in snails. Ada Veterinaria Hungarica 8, 223–36.Google Scholar
Lee, E. T. (1980). Statistical Methods for Survival Data Analysis. Belmont, CA: Lifetime Learning Publications.Google Scholar
Rose, j. H. (1957). Observations on the larval stages of Muellerius capillaris within the intermediate host Agriolimax agrestis and A. reticulatus. Journal of Helminthology 31, 1–16.CrossRefGoogle Scholar
Skorping, A. (1982). Elaphostrongylus rangiferi: influence of temperature, substrate, and larval age on the infection rate in the intermediate snail host, Arianta arbustorum. Experimental Parasitology 54, 222–8.CrossRefGoogle ScholarPubMed
Skorping, A. (1984). Density-dependent effects in a parasitic nematode, Elaphostrongylus rangiferi, on the snail intermediate host. Oecologia 64, 34–40.CrossRefGoogle Scholar
Skorping, A. (1985). Parasite-induced reduction in parasite survival and fecundity: the effect of the nematode Elaphostrongylus rangiferi on the snail intermediate host. Parasitology 91, 555–62.CrossRefGoogle Scholar
Skorping, A. (1986). The population dynamics of Elaphostrongylus rangiferi in the intermediate host - an experimental study. D.Phil, thesis, University of Tromso, Norway.Google Scholar
Skorping, A. & Andersen, j. (1991). Dispersion patterns and infection levels of Elaphostrongylus rangiferi in natural gastropod populations in Finnmark county, Norway. Report, University of Tromso, Norway. (In Norwegian.).Google Scholar
TMStatsoft, (1993). Statistica for Windows, release 4.5. Tulsa, OK: Statsoft, Inc.Google Scholar
Sulliven, J. T., Ratanapitaksa, S. & Palmieri, J. R. (1978). Comparative host reaction to Angiostrongylus malaysiensis (Nematoda) in three species of snails. Journal of Invertebrate Pathology 32, 359–67.CrossRefGoogle Scholar