Data/hora: 01/06/2024 12:47:28

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Spatial and Temporal Dynamics of Mass Mortalities in Oysters Is Influenced by Energetic Reserves and Food Quality
Autores: | Pernet, Fabrice; Lagarde, Franck; Jeannee, Nicolas; Daigle, Gaetan; Barret, Jean; Le Gall, Patrik; Quere, Claudie; Roque D'Orbcastel, Emmanuelle.
Data: | 2014-02
Ano: | 2014
Resumo: | 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.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00181/29249/27663.pdf

DOI:10.1371/journal.pone.0088469

Editor: | Public Library Science
Relação: | http://archimer.ifremer.fr/doc/00181/29249/
Formato: | application/pdf
Fonte: | Plos One (1932-6203) (Public Library Science), 2014-02 , Vol. 9 , N. 2 , P. e88469
Fonte: | 2014 Pernet et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.