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The susceptibility of terrestrial gastropods to experimental infection with elaphostrongylus rangiferi nematoda metastrongyloidea



The susceptibility of terrestrial gastropods to experimental infection with elaphostrongylus rangiferi nematoda metastrongyloidea



Zeitschrift fuer Parasitenkunde 62(1): 7-14



Terrestrial gastropods, (16 spp.), collected at Tromsoya, northern Norway, were experimentally brought into contact with 1st stage larvae of E. rangiferi, a parasite causing neurological disorders in reindeer, Rangifer tarandus (L.). All species were susceptible to infection but there were considerable variations in incidence and intensity of infections and in the development of the nematode in the different gastropod species. In Discus ruderatus, Arion silvaticus, Deroceras laeve, Euconulus, fulvus and Trichia hispida, development to infective 3rd stage larvae took about 20 days at 20.degree. C. In Succinea pfeifferi, Deroceras reticulatum, and Arianta arbustorum development was somewhat slower. In Cochlicopa lubrica, Arion subfuscus, A. hortensis, Vitrina pellucida, Nesovitrea spp., and Clausilia bidentata, only small numbers of larvae developed and at a very slow rate. In Vertigo lilljeborgi and Punctum pygmaeum, the larvae did not develop. Growth in length of E. rangiferi in D. ruderatus was rapid and continuous up to the second molt (about 15 days postinfection). Thereafter there was a slower growth rate. Tissue reactions against the infection were observed in 11 spp. No obvious relationship between the degree of tissue reactions and susceptibility to infection was found.

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Accession: 006776645

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