Issue |
Parasite
Volume 5, Number 2, June 1998
|
|
---|---|---|
Page(s) | 181 - 184 | |
DOI | https://doi.org/10.1051/parasite/1998052181 | |
Published online | 19 September 2014 |
Note de recherche
Effect of the infection by Neostrongylus linearis on the survival of the intermediate host Cernuella (cernuella) virgata
Effet de l’infestation par Neostrongylus linearis sur la survie de l’hote intermédiaire Cernuella (Cernuella) irgatac
1
Parasitology and Parasitic Diseases, Santiago de Compostela University, Veterinary Faculty, 27071 Lugo, Spain.
* Correspondence : P. Díez. Tel: 82-252303 - Fax : 82-252195 E-mail: dibapa@lugo.usc.es.
Received:
23
June
1997
Accepted:
15
December
1997
The molluse intermediary host Cernuella (Cernuella) virgata was infected both in nature and in the laboratory with Neostrongylus linearis larvae. The infection rate was higher in the natural infection than in the experimental one all through the study. Accordingly, the survival of the molluscs was lower among those that had been naturally infected than among uninfected control and experimentally infected ones. The differences between survival curves of the different batches were only significant in the months when the infection rate in naturally infected batches was very high, from November to February. So we can conclude that the mortality rate is higher among the snails which harbour a considerable number of N. linearis than among non-infected or moderately infected molluscs.
Résumé
Le mollusque hôte intermédiaire Cernuella (Cernuella) virgata, a été infesté avec des larves de Neostrongylus linearis en milieu naturel et au laboratoire. Pendant toute la durée de l'étude, le taux d'infestation a été plus élevé dans les infestations naturelles. Les mollusques infestés naturellement ont présenté une survie plus faible que ceux infestés expérimentalement ou ceux du lot témoin non infesté. Les différences entre les lots ont été significatives seulement lorsque le taux d'infestation était élevé - de novembre à février - pour les infestations naturelles. Nous pouvons conclure que les mollusques qui hébergent un plus grand nombre de larves de N. linearis présentent une mortalité plus élevée que ceux qui ne sont pas parasités ou faiblement infestés.
Key words: Neostrongylus linearis / Protostrongylidae / Cernuella (Cernuella) virgata / mollusc / survival / natural infection / experimental infection
Mots clés : Neostrongylus linearis / Protostrongylidae / Cernuella (Cernuella) virgata / mollusques / survie / infestation naturelle / infestation expérimentale
© PRINCEPS Editions, Paris, 1998, transferred to Société Française de Parasitologie
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.