FN Archimer Export Format
PT J
TI Metabolism of the Pacific oyster,     Crassostrea gigas     , is influenced by salinity and modulates survival to the Ostreid herpesvirus OsHV-1
BT 
AF FUHRMANN, Marine
   DELISLE, Lizenn
   PETTON, Bruno
   CORPOREAU, Charlotte
   PERNET, Fabrice
AS 1:1;2:1;3:2;4:1;5:1;
FF 1:;2:PDG-RBE-PFOM-LPI;3:PDG-RBE-PFOM-LPI;4:PDG-RBE-PFOM-LPI;5:PDG-RBE-PFOM-LPI;
C1 Technopole Brest Iroise, IFREMER, UBO CNRS IRD, LEMAR UMR 6539, F-29280 Plouzane, France.
   IFREMER, UBO CNRS IRD, LEMAR UMR 6539, F-29840 Argenton, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
   ARGENTON
SE PDG-RBE-PFOM-LPI
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   DOAJ
IF 1.962
TC 45
UR https://archimer.ifremer.fr/doc/00427/53886/54958.pdf
   https://archimer.ifremer.fr/doc/00427/53886/54959.pdf
LA English
DT Article
DE ;Bivalve;Disease;Environment;Metabolism;Mortality risk;Salinity
AB The Pacific oyster, Crassostrea gigas, is an osmoconforming bivalve exposed to wide salinity fluctuations. The physiological mechanisms used by oysters to cope with salinity stress are energy demanding and may impair other processes, such as defense against pathogens. This oyster species has been experiencing recurrent mortality events caused by the Ostreid herpesvirus 1 (OsHV-1). The objectives of this study were to investigate the effect of salinity (10, 15, 25 and 35‰) on energetic reserves, key enzyme activities and membrane fatty acids, and to identify the metabolic risk factors related to OsHV-1-induced mortality of oysters. Acclimation to low salinity led to increased water content, protein level, and energetic reserves (carbohydrates and triglycerides) of oysters. The latter was consistent with lower activity of hexokinase, the first enzyme involved in glycolysis, up-regulation of AMP-activated protein kinase, a major regulator of cellular energy metabolism, and lower activity of catalase, an antioxidant enzyme involved in management of reactive oxygen species. Acclimation to salinity also involved a major remodeling of membrane fatty acids. Particularly, 20:4n-6 decreased linearly with decreasing salinity, likely reflecting its mobilization for prostaglandin synthesis in oysters. The survival of oysters exposed to OsHV-1 varied from 43% to 96% according to salinity ( Fuhrmann et al., 2016). Risk analyses showed that activity of superoxide dismutase and levels of proteins, carbohydrates, and triglycerides were associated with a reduced risk of death. Therefore, animals with a higher antioxidant activity and a better physiological condition seemed less susceptible to OsHV-1. 
PY 2018
PD FEB
SO Biology Open
SN 2046-6390
PU Company Of Biologists Ltd
VL 7
IS 2
UT 000426390300008
DI 10.1242/bio.028134
ID 53886
ER

EF