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Parasite-induced reduction in host survival and fecundity: the effect of the nematode Elaphostrongylus rangiferi on the snail intermediate host






Parasitology, 913: 555-562

Parasite-induced reduction in host survival and fecundity: the effect of the nematode Elaphostrongylus rangiferi on the snail intermediate host

The effect of the protostrongylid nematode, Elaphostrongylus rangiferi, on the fecundity and survival of an intermediate snail host, Arianta arbustorum, was studied. Over an experimental period of 12 weeks, infected snails had a significantly lower egg production than uninfected control snails. No significant difference in survival was found between infected and uninfected adult snails. Infected juvenile snails showed a consistent decrease in survival with increasing mean density of parasites. A linear relationship was found between snail instantaneous death rate over a 28-day interval and the mean number of parasites/snail. When calculated for 4-day intervals, the instantaneous death rate was highest between 8 and 12 days post-infection. It is concluded that the most pathogenic phase of this parasite is during the first moult.


Accession: 001424418

DOI: 10.1017/s003118200006279x



Related references

Skorping A., 1985: Parasite induced reduction in host survival and fecundity the effect of the nematode elaphostrongylus rangiferi on the snail intermediate host arianta arbustorum. The effect of the protostrongylid nematode, Elaphostrongylus rangiferi, on the fecundity and survival of an intermediate snail host, Arianta arbustorum, was studied. Over an experimental period of 12 weeks, infected snails had a significantly lowe...

Skorping A.; Halvorsen O., 1982: Experimental studies on the host parasite relationship of the metastrongyloid nematode elaphostrongylus rangiferi in the snail intermediate host arianta arbustorum. Molecular & Biochemical Parasitology (SUPPL): 569

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Skorping A., 1985: Lymnaea stagnalis as experimental intermediate host for the protostrongylid nematode elaphostrongylus rangiferi. The aquatic snail species. L. stagnalis were examined as experimental intermediate host for the nematode E. rangiferi, a neurotrophic parasite of reindeer, Rangifer tarandus. All juvenile snails exposed to 1st-stage larvae of E. angiferi became in...

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Skorping, A., 1982: Elaphostrongylus rangiferi: influence of temperature, substrate, and larval age on the infection rate in the intermediate snail host, Arianta arbustorum. The infection rate of first-stage larvae of E. rangiferi, was studied experimentally using the juvenile snail A. arbustorum as intermediate host. The nematode showed a linear, 5-fold increase in infection rate within the temperature range of 4 to...

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Hansen S.H.; Halvorsen O., 1976: Elaphostrongylus rangiferi nematoda metastrongyloidea in the gastropod intermediate host. Norwegian Journal of Zoology 24(4): 462