FN Archimer Export Format
PT J
TI Exposure to chronic moderate hypoxia impacts physiological and developmental traits of European sea bass (Dicentrarchus labrax) larvae
BT 
AF VANDERPLANCKE, Gwenaelle
   CLAIREAUX, Guy
   QUAZUGUEL, Patrick
   HUELVAN, Christine
   CORPOREAU, Charlotte
   MAZURAIS, David
   ZAMBONINO-INFANTE, Jose-Luis
AS 1:1;2:1,2;3:1;4:1;5:1;6:1;7:1;
FF 1:PDG-RBE-PFOM-ARN;2:;3:PDG-RBE-PFOM-ARN;4:PDG-RBE-PFOM-ARN;5:PDG-RBE-PFOM-PI;6:PDG-RBE-PFOM-ARN;7:PDG-RBE-PFOM-ARN;
C1 Ifremer, LEMAR UMR 6539 CNRS-UBO-IRD-Ifremer, ZI de la Pointe du Diable, CS 10070, 29280, Plouzané, France
   Université de Bretagne Occidentale, LEMAR UMR 6539 CNRS-UBO-IRD-Ifremer, ZI de la Pointe du Diable, CS 10070, 29280, Plouzané, France
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-RBE-PFOM-ARN
   PDG-RBE-PFOM-PI
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 1.442
TC 20
UR https://archimer.ifremer.fr/doc/00253/36433/35005.pdf
LA English
DT Article
DE ;Hypoxia;Fish larvae;Energy metabolism;Maturation
AB Since European sea bass (Dicentrarchus labrax) larvae occurred in coastal and estuarine waters at early life stages, they are likely to be exposed to reduced dissolved oxygen waters at a sensitive developmental stage. However, the effects of hypoxia at larval stage, which depend in part on fish species, remain very poorly documented in European sea bass. In the present study, the impacts of an experimental exposure to a chronic moderate hypoxia (40 % air saturation) between 30 and 38 days post-hatching on the physiological and developmental traits of European sea bass larvae were assessed. This study was based on the investigation of survival and growth rates, parameters related to energy metabolism [Citrate Synthase (CS) and Cytochrome-c Oxidase (COX) activities], and biological indicators of the maturation of digestive function [pancreatic (trypsin, amylase) and intestinal (Alkaline Phosphatase "AP" and Aminopeptidase-N "N-LAP") enzymes activities]. While condition of hypoxia exposure did not induce any significant mortality event, lower growth rate as well as CS/COX activity ratio was observed in the Hypoxia Treatment group. In parallel, intestinal enzyme activities were also lower under hypoxia. Altogether, the present data suggest that sea bass larvae cope with moderate hypoxia by (1) reducing processes that are costly in energy and (2) regulating mitochondria functions in order to respond to energy-demand conditions. Both these effects are associated with a delay in the maturation of the digestive function.
PY 2015
PD FEB
SO Fish Physiology and Biochemistry
SN 0920-1742
PU Springer
VL 41
IS 1
UT 000348447700019
BP 233
EP 242
DI 10.1007/s10695-014-0019-4
ID 36433
ER

EF