FN Archimer Export Format PT J TI Low pH reduced survival of the oyster Crassostrea gigas exposed to the Ostreid herpesvirus 1 by altering the metabolic response of the host BT AF Fuhrmann, Marine Richard, Gaëlle Quere, Claudie Petton, Bruno Pernet, Fabrice AS 1:1;2:2;3:1;4:3;5:1; FF 1:;2:;3:PDG-RBE-PFOM-LPI;4:PDG-RBE-PFOM-LPI;5:PDG-RBE-PFOM-LPI; C1 IFREMER, LEMAR, UMR 6539, Technopole Brest Iroise, Plouzane, France LEMAR UMR 6539, Technopole de Brest-Iroise, Plouzané, France IFREMER, LEMAR, UMR 6539, Presquile Du Vivier, Argenton, France C2 IFREMER, FRANCE UBO, FRANCE IFREMER, FRANCE SI BREST ARGENTON SE PDG-RBE-PFOM-LPI UM LEMAR IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-univ-france IF 3.224 TC 17 UR https://archimer.ifremer.fr/doc/00472/58334/60887.pdf LA English DT Article DE ;Acidification;Bivalve;Disease;Environment;Metabolism;Mortality risk AB Environmental change in the marine realm has been accompanied by emerging diseases as new pathogens evolve to take advantage of hosts weakened by environmental stress. Here we investigated how an exposure to reduced seawater pH influenced the response of the oyster Crassostrea gigas to an infection by the Ostreid herpesvirus type I (OsHV-1). Oysters were acclimated at pH 8.1 or pH 7.8 and then exposed to OsHV-1. Their survival was monitored and oyster tissues were sampled for biochemical analyses. The survival of oysters exposed to OsHV-1 at pH 7.8 was lower (33.5%) than that of their counterparts at pH 8.1 (44.8%) whereas levels of OsHV-1 DNA were similar. Energetic reserves, fatty acid composition and prostaglandin levels in oyster did not vary consistently with pH, infection or their interactions. However, there was a reduction in the activities of superoxide dismutase (SOD) and nitric oxide synthase (iNOS) in oysters at low pH, which is associated with the observed difference in survival. PY 2019 PD MAR SO Aquaculture SN 0044-8486 PU Elsevier BV VL 503 UT 000458730400020 BP 167 EP 174 DI 10.1016/j.aquaculture.2018.12.052 ID 58334 ER EF