FN Archimer Export Format
PT J
TI Influence of environmental variability and age on the body condition of small pelagic fish in the Gulf of Lions
BT 
AF BROSSET, Pablo
   MENARD, Frederic
   FROMENTIN, Jean-Marc
   BONHOMMEAU, Sylvain
   ULSES, Caroline
   BOURDEIX, Jean-Herve
   BIGOT, Jean-Louis
   VAN BEVEREN, Elisabeth
   ROOS, David
   SARAUX, Claire
AS 1:1,2;2:3;3:2;4:2;5:4;6:2;7:2;8:2;9:2;10:2;
FF 1:;2:;3:PDG-RBE-MARBEC;4:PDG-RBE-MARBEC-LHM;5:;6:PDG-RBE-MARBEC-LHM;7:PDG-RBE-MARBEC-LHM;8:PDG-RBE-MARBEC-LHM;9:PDG-RBE-MARBEC-LHM;10:PDG-RBE-MARBEC-LHM;
C1 Univ Montpellier, IRD, IFREMER, UMR MARBEC,CNRS, F-34203 Sete, France.
   UM, IRD, IFREMER, UMR MARBEC,CNRS, F-34203 Sete, France.
   Univ Toulon & Var, Aix Marseille Univ, MIO, IRD,CNRS,IRD,UM 110, F-13288 Marseille, France.
   Univ Toulouse 3, CNRS, INSU, Lab Aerol,UMR 5560, F-31400 Toulouse, France.
C2 UNIV MONTPELLIER, FRANCE
   IFREMER, FRANCE
   IRD, FRANCE
   UNIV TOULOUSE, FRANCE
SI SETE
SE PDG-RBE-MARBEC
   PDG-RBE-MARBEC-LHM
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-univ-france
IF 2.361
TC 77
UR https://archimer.ifremer.fr/doc/00272/38334/36575.pdf
   https://archimer.ifremer.fr/doc/00272/38334/38457.pdf
LA English
DT Article
CR PELMED 2001
   PELMED 2002
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   PELMED 2007
   PELMED 2008
   PELMED 2009
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   PELMED 85
   PELMED 93
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   PELMED 95
   PELMED 96
   PELMED 97
   PELMED 98
   PELMED 99
   PELMED2M
BO L'Europe
   Thalassa
DE ;Anchovy;Sardine;Relative condition factor;NW Mediterranean Sea;Endogenous effect;Environmental effect
AB Endogenous and environmental variables are fundamental in explaining variations in fish condition. Based on more than 20 yr of fish weight and length data, relative condition indices were computed for anchovy and sardine caught in the Gulf of Lions. Classification and regression trees (CART) were used to identify endogenous factors affecting fish condition, and to group years of similar condition. Both species showed a similar annual cycle with condition being minimal in February and maximal in July. CART identified 3 groups of years where the fish populations generally showed poor, average and good condition and within which condition differed between age classes but not according to sex. In particular, during the period of poor condition (mostly recent years), sardines older than 1 yr appeared to be more strongly affected than younger individuals. Time-series were analyzed using generalized linear models (GLMs) to examine the effects of oceanographic abiotic (temperature, Western Mediterranean Oscillation [WeMO] and Rhone outflow) and biotic (chlorophyll a and 6 plankton classes) factors on fish condition. The selected models explained 48 and 35% of the variance of anchovy and sardine condition, respectively. Sardine condition was negatively related to temperature but positively related to the WeMO and mesozooplankton and diatom concentrations. A positive effect of mesozooplankton and Rhone runoff on anchovy condition was detected. The importance of increasing temperatures and reduced water mixing in the NW Mediterranean Sea, affecting planktonic productivity and thus fish condition by bottom-up control processes, was highlighted by these results. Changes in plankton quality, quantity and phenology could lead to insufficient or inadequate food supply for both species.
PY 2015
PD JUL
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 529
UT 000356076000017
BP 219
EP 231
DI 10.3354/meps11275
ID 38334
ER

EF