FN Archimer Export Format
PT J
TI Spatio-temporal variation in diet may affect condition and abundance of juvenile European hake in the Gulf of Lions (NW Mediterranean)
BT 
AF FERRATON, Franck
   HARMELIN VIVIEN, Mireille
   MELLON-DUVAL, Capucine
   SOUPLET, Arnauld
AS 1:1;2:2;3:1;4:1;
FF 1:PDG-DOP-DCM-HMT-RHSETE;2:;3:PDG-DOP-DCM-HMT-RHSETE;4:PDG-DOP-DCM-HMT-RHSETE;
C1 IFREMER, Ctr Recherche Halieutique Mediterraneenne Trop, Lab Res Halieutiques, F-34203 Sete, France.
   Univ Aix Marseille 2, Ctr Oceanol Marseille, CNRS, UMR 6540, F-13007 Marseille, France.
C2 IFREMER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
SI SETE
SE PDG-DOP-DCM-HMT-RHSETE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.546
TC 52
TU CNRS
   IFREMER
   IRD
   UNIVERSITE AIX-MARSEILLE
   UNIVERSITE AVIGNON
UR https://archimer.ifremer.fr/doc/2007/publication-2627.pdf
LA English
DT Article
CR MEDITS / FR
   MEDITS 2004
   MEDITS 2005
   MEDITS 2006
   MEDITS FR
   MEDITS FR
   MEDITS-FR2000
   MEDITS-FR2001
   MEDITS-FR2002
   MEDITS-FR2003
   MEDITS-FR97
   MEDITS-FR98
   MEDITS-FR99
   MERMED3
   MERMED4
   MERMED5
   MERVIV 1
   MERVIV 2
   MERVIV 3
BO L'Europe
DE ;Recruitment;Relative condition factor;Nitrogen;Carbon;Stable isotopes;Stomach contents;Merluccius merluccius
AB Variations in space and time of juvenile hake diet (5 to 19 cm total length, TL) were investigated in the Gulf of Lions (NW Mediterranean) and related to variation in C and N stable isotope ratios, condition and abundance. Crustaceans (mysids and euphausiids) dominated the diet of the smallest juvenile hake (5 to 9 cm. TL), and fishes (sardines and anchovies) of the largest juveniles (15 to 19 cm TL). The transition from a crustacean- to a fish-based diet occurred in medium-sized juveniles (10 to 14 cm TL), which preyed on both crustaceans and fishes (gobiids). These juveniles preyed on fishes when living in shallow waters (30 to 50 m), and crustaceans when located in deep waters (70 to 150 m). Although hake diet did not change over time in shallow waters (fish-based diet), in deep waters it was dominated by mysids and euphausiids in 2002 and natantids in 2003. In the size range analysed, no correlation was found between juvenile hake length and their delta C-13 and delta N-15 values, but a significant correlation with depth was observed, with higher values in shallow waters. The condition factor of medium-sized juveniles did not vary with depth in 2002, but was significantly lower in deep waters in 2003 when they fed on natantids instead of small crustaceans. Abundance of juvenile hake in the Gulf of Lions drastically decreased from 2002 to 2003, particularly in deep waters. The lower condition factor of juvenile hake in deep waters in 2003, probably owing to a lack of suitable food, might have negatively affected their survival. These results support the hypothesis that food resources influence condition and survival of juvenile hake when settled, and thus affect NW Mediterranean fisheries.
PY 2007
PD MAY
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-Research
VL 337
UT 000247105100017
BP 197
EP 208
DI 10.3354/meps337197
ID 2627
ER

EF