FN Archimer Export Format
PT J
TI An early-life hypoxia event has a long-term impact on protein digestion and growth in European sea bass juvenile.
BT 
AF ZAMBONINO-INFANTE, Jose-Luis
   MAZURAIS, David
   DUBUC, Alexia
   QUEAU, Pierre
   VANDERPLANCKE, Gwenaelle
   SERVILI, Arianna
   CAHU, Chantal
   LE BAYON, Nicolas
   HUELVAN, Christine
   CLAIREAUX, Guy
AS 1:1;2:1;3:1;4:1;5:1;6:1;7:1;8:1;9:1;10:2;
FF 1:PDG-RBE-PFOM-ARN;2:PDG-RBE-PFOM-ARN;3:;4:;5:PDG-RBE-PFOM-ARN;6:PDG-RBE-PFOM-ARN;7:PDG-DS;8:PDG-RBE-PFOM-ARN;9:PDG-RBE-PFOM-ARN;10:;
C1 IFREMER, Unite Physiol Fonct Organismes Marins, LEMAR UMR 6539, BP 70, F-29280 Plouzane, France.
   Univ Bretagne Occidentale, Inst Univ Europeen Mer, LEMAR UMR 6539, Technopole Brest Iroise,Pl Nicolas Copernic, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-RBE-PFOM-ARN
   PDG-DS
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.179
TC 21
UR https://archimer.ifremer.fr/doc/00373/48407/48635.pdf
LA English
DT Article
DE ;Climate change;Digestive enzymes;Dicentrarchus labrax;Growth;Hypoxia;Respirometry
AB Ocean warming, eutrophication and consequent decrease in oxygen lead to smaller average fish size. Although such responses are well-known in an evolutionary context, involving multiple generations, it appears to be incompatible with current rapid environmental change. Rather, phenotypic plasticity could provide a means for marine fish to cope with rapid environmental changes. However, little is known about the mechanisms underlying plastic responses to environmental conditions that favour small phenotypes.  Our aim was to investigate how and why European sea bass that had experienced a short episode of moderate hypoxia during their larval stage subsequently exhibited a growth depression at the juvenile stage compared to the control group.  We examined whether energy was used to cover higher costs for maintenance, digestion or activity metabolisms, as a result of differing metabolic rate. The lower growth was not a consequence of lower feed intake.  We measured several respirometry parameters and we only found a higher SDA (Specific Dynamic Action) duration and lower SDA amplitude in a fish phenotype with lower growth; this phenotype was also associated with a lower protein digestive capacity in the intestine.  Our results contribute to the understanding of the observed decrease in growth in response to climate change. They demonstrate that the reduced growth of juvenile fishes as a consequence of an early-life hypoxia event was not due to a change of fish aerobic scope, but to a specific change in the efficiency of protein digestive functions. The question remains of whether this effect is epigenetic and could be reversible in the offspring.
PY 2017
PD MAY
SO Journal Of Experimental Biology
SN 0022-0949
PU Company Of Biologists Ltd
VL 220
IS 10
UT 000401483300016
BP 1846
EP 1851
DI 10.1242/jeb.154922
ID 48407
ER

EF