FN Archimer Export Format
PT J
TI Salinity influences disease-induced mortality of the oyster Crassostrea gigas and infectivity of the ostreid herpesvirus 1 (OsHV-1)
BT 
AF FUHRMANN, Marine
   PETTON, Bruno
   QUILLIEN, Virgile
   FAURY, Nicole
   MORGA, Benjamin
   PERNET, Fabrice
AS 1:1;2:2;3:1;4:3;5:3;6:1;
FF 1:PDG-RBE-PFOM-PI;2:PDG-RBE-PFOM-PI;3:PDG-RBE-PFOM-LPI;4:PDG-RBE-SG2M-LGPMM;5:PDG-RBE-SG2M-LGPMM;6:PDG-RBE-PFOM-PI;
C1 IFREMER, LEMAR UMR 6539, Technopole Brest Iroise, F-29280 Plouzane, France.
   IFREMER, LEMAR UMR 6539, F-29840 Presquile De Vivier, Argenton, France.
   IFREMER, Lab Genet & Pathol, Ave Mus Loup, F-17390 La Tremblade, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
   ARGENTON
   LA TREMBLADE
SE PDG-RBE-PFOM-PI
   PDG-RBE-PFOM-LPI
   PDG-RBE-SG2M-LGPMM
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   DOAJ
IF 2.905
TC 34
UR https://archimer.ifremer.fr/doc/00350/46100/45781.pdf
   https://archimer.ifremer.fr/doc/00350/46100/45782.pdf
LA English
DT Article
DE ;Bivalve;Herpesviridae;Infection;Disease transmission;Risk analysis
AB Mortality of young Pacific oysters Crassostrea gigas associated with the ostreid herpesvirus 1 (OsHV-1) is occurring worldwide. Here, we examined for the first time the effect of salinity on OsHV-1 transmission and disease-related mortality of C. gigas, as well as salinity-related effects on the pathogen itself. To obtain donors for OsHV-1 transmission, we transferred laboratory-raised oysters to an estuary during a disease outbreak and then back to the laboratory. Oysters that tested OsHV-1 positive were placed in seawater tanks (35‰, 21°C). Water from these tanks was used to infect naïve oysters in 2 experimental setups: (1) oysters acclimated or non-acclimated to a salinity of 10, 15, 25 and 35‰ and (2) oysters acclimated to a salinity of 25‰; the latter were exposed to OsHV-1 water diluted to a salinity of 10 or 25‰. The survival of oysters exposed to OsHV-1 water and acclimated to a salinity of 10‰ was >95%, compared to only 43 to 73% survival in oysters acclimated to higher salinities (Expt 1), reflecting differences in the levels of OsHV-1 DNA and viral gene expression (Expts 1 and 2). However, the survival of their non-acclimated counterparts was only 23% (Expt 2), and the levels of OsHV-1 DNA and the expression of 4 viral genes were low (Expt 1). Thus, OsHV-1 may not have been the ultimate cause of mortality in non-acclimated oysters weakened by a salinity shock. It appears that reducing disease risk by means of low salinity is unlikely in the field.
PY 2016
SO Aquaculture Environment Interactions
SN 1869-215X
PU Inter-research
VL 8
UT 000387131700010
BP 543
EP 552
DI 10.3354/aei00197
ID 46100
ER

EF