FN Archimer Export Format
PT J
TI Influence of water temperature and oxygenation on the aerobic metabolic scope of Atlantic cod (Gadus morhua)
BT 
AF CLAIREAUX, Guy
   WEBBER, D
   LAGARDERE, Jean-Paul
   KERR, S
AS 1:;2:;3:;4:;
FF 1:;2:;3:;4:;
C1 IFREMER, CNRS, CREMA LHoumeau, Ctr Rech Ecol Marine & Aquaculture, F-17137 Lhoumeau, France.
   Dalhousie Univ, Dept Biol, Halifax, NS B3H 4J1, Canada.
C2 IFREMER, FRANCE
   DALHOUSIE UNIV, CANADA
SI LA ROCHELLE
SE PDG-DRV-RA-CREMA
IN WOS Ifremer jusqu'en 2018
IF 1.307
TC 180
UR https://archimer.ifremer.fr/doc/2000/publication-428.pdf
LA English
DT Article
DE ;Oxygen;Temperature;Physiological ecology;Metabolism;Atlantic cod
AB Environmental influences (temperature and oxygenation) on cod metabolism and their impact on the ecology of this species were investigated. Limiting oxygen concentration curves (O-2 level ranging between 15 and 100% air saturation) were established at 2, 5 and 10 degreesC. The standard metabolic rate (SMR), the maximum metabolic rate and the metabolic score were then modelled as functions of temperature and/or oxygen saturation. The mean SMR at 2, 5 and 10 degreesC were 19.8 +/- 4.9, 30.8 +/- 6.1 and 54.3 +/- 4.1 mg O-2 h(-1) kg(-1). respectively. Between 2 and 5 degreesC, the active metabolic rate of cod almost doubled from 65 to 120 mg O-2 h(-1) kg(-1), to reach 177 mg O-2 h(-1) kg(-1) at 10 degreesC. In terms of metabolic scope (MS), the temperature rise from 7 to 5 degreesC resulted in a two-fold increase from 45 to 89 mg O-2 h(-1) kg(-1), with MS reaching 123 mg O-2 h(-1) kg-l at 10 degreesC. Our proposed model describing the impact of temperature and oxygen level provides new insight into the energetic interactions which govern the relationship between Atlantic cod and its environment. We re-examined published experimental and field studies from the angle of the regulation of metabolic power. We suggest that, when faced with heterogeneous or unstable hydrological conditions, cod tend to behaviourally maximise their metabolic scope. Through this: adaptive response, fish reduce energy budgeting conflicts and presumably increase the probability of routinely operating away from lethal boundaries. 
PY 2000
PD DEC
SO Journal of Sea Research
SN 1385-1101
PU Elsevier
VL 44
IS 3-4
UT 000166878200007
BP 257
EP 265
DI 10.1016/S1385-1101(00)00053-8
ID 428
ER

EF