Ostreid herpesvirus 1 detection and relationship with Crassostrea gigas spat mortality in France between 1998 and 2006

Type Article
Date 2011-06
Language English
Author(s) Garcia Celine1, Thebault Anne2, Degremont LionelORCID1, Arzul IsabelleORCID1, Miossec Laurence1, 3, Robert Maeva1, Chollet Bruno1, Francois Cyrille1, Joly Jean-Pierre1, Ferrand Sylvie1, Kerdudou Nolwenn1, Renault Tristan1
Affiliation(s) 1 : IFREMER, Lab Genet & Pathol, F-17390 La Tremblade, France
2 : PASER DERNS, AFSSA, F-94701 Maisons Alfort, France
3 : IFREMER, Serv Valorisat Informat Gest Integree & Surveilla, F-44311 Nantes 03, France
Source Veterinary Research (0928-4249) (Biomed Central), 2011-06 , Vol. 42 , N. 73 , P. 11 p.
DOI 10.1186/1297-9716-42-73
WOS© Times Cited 85
Abstract Since its molecular characterisation, Ostreid herpesvirus 1 (OsHV-1) has been regularly detected in Crassostrea gigas in France. Although its pathogenicity was demonstrated on larval stages, its involvement during mortality outbreaks at the juvenile stage was highly suspected but not evidenced. To investigate mortality outbreaks, the French National Network for Surveillance and Monitoring of Mollusc Health (REPAMO) carried out two surveys in juvenile C. gigas. The first survey lasted from 1998 to 2006 and was an epidemiological inquiry occurring when oyster farmers reported mortality outbreaks. The second survey, a longitudinal one, was set up in 1998 to complete the network observations on OsHV-1. Data analysis showed a specific pattern of mortality outbreaks associated with OsHV-1 detection. Ostreid herpesvirus 1 detection mainly appeared during the summer, suggesting the influence of the seawater temperature on its occurrence. It mostly presented a patchy distribution in the field in contrast to the nursery. Significant relationship between OsHV-1 detection and spat mortality was found, preferentially in sheltered and closed environments. The longitudinal survey confirmed most of the network observations. Although subsequent works particularly epidemiological surveys would be useful to confirm the causal link between the detection of OsHV-1 and the mortality outbreaks in juvenile C. gigas, the role of OsHV-1 in oyster mortality is progressing.
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Garcia Celine, Thebault Anne, Degremont Lionel, Arzul Isabelle, Miossec Laurence, Robert Maeva, Chollet Bruno, Francois Cyrille, Joly Jean-Pierre, Ferrand Sylvie, Kerdudou Nolwenn, Renault Tristan (2011). Ostreid herpesvirus 1 detection and relationship with Crassostrea gigas spat mortality in France between 1998 and 2006. Veterinary Research, 42(73), 11 p. Publisher's official version : https://doi.org/10.1186/1297-9716-42-73 , Open Access version : https://archimer.ifremer.fr/doc/00040/15110/