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Auteur (up) PERNET, F.; LAGARDE, F.; JEANNEE, N.; DAIGLE, G.; BARRET, J.; LE GALL, P.; QUERE, C.; ROQUE D'ORBCASTEL, E. url  openurl
  Titre Spatial and Temporal Dynamics of Mass Mortalities in Oysters Is Influenced by Energetic Reserves and Food Quality Type Article scientifique
  Année 2014 Publication Plos One Revue Abrégée  
  Volume 9 Numéro 2 Pages e88469  
  Mots-Clés  
  Résumé Although spatial studies of diseases on land have a long history, far fewer have been made on aquatic diseases. Here, we present the first large-scale, high-resolution spatial and temporal representation of a mass mortality phenomenon cause by the Ostreid herpesvirus (OsHV-1) that has affected oysters (Crassostrea gigas) every year since 2008, in relation to their energetic reserves and the quality of their food. Disease mortality was investigated in healthy oysters deployed at 106 locations in the Thau Mediterranean lagoon before the start of the epizootic in spring 2011. We found that disease mortality of oysters showed strong spatial dependence clearly reflecting the epizootic process of local transmission. Disease initiated inside oyster farms spread rapidly beyond these areas. Local differences in energetic condition of oysters, partly driven by variation in food quality, played a significant role in the spatial and temporal dynamics of disease mortality. In particular, the relative contribution of diatoms to the diet of oysters was positively correlated with their energetic reserves, which in turn decreased the risk of disease mortality.  
  Adresse Univ Laval, Dept Math & Stat, Quebec City, PQ G1K 7P4, Canada.  
  Auteur institutionnel Thèse  
  Editeur Public Library Science Lieu de Publication Éditeur  
  Langue Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 1932-6203 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ 29249 collection 1218  
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