FN Archimer Export Format
PT J
TI Marine diatoms sustain growth of bivalves in a Mediterranean lagoon
BT 
AF PERNET, Fabrice
   MALET, Nathalie
   PASTOUREAUD, Annie
   VAQUER, Andre
   QUERE, Claudie
   DUBROCA, Laurent
AS 1:1;2:1;3:1;4:2;5:3;6:1;
FF 1:PDG-ODE-LER-LERLR;2:PDG-ODE-LER-LERLR;3:PDG-ODE-LER-LERLR;4:;5:PDG-RBE-PFOM-PI;6:;
C1 IFREMER, Lab Environm Ressources Languedoc Roussil, F-34200 Sete, France.
   Univ Montpellier 2, UMR CNRS, IFREMER, Lab Ecosyst Lagunaires,IRD,UM2, F-34000 Montpellier, France.
   IFREMER, Lab Physiol Fonct Organismes Marins, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UNIV MONTPELLIER, FRANCE
   IFREMER, FRANCE
SI SETE
   BREST
SE PDG-ODE-LER-LERLR
   PDG-RBE-PFOM-PI
   IRD
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 1.83
TC 54
UR https://archimer.ifremer.fr/doc/00075/18575/16177.pdf
LA English
DT Article
DE ;Aquaculture;Bivalve;Competition;Feeding ecology;Growth;Trophic markers
AB Carbon stable isotopes and fatty acids were measured in the suspended particulate organic matter (POM) of the Thau lagoon to study its qualitative temporal changes in relation to environmental factors and to identify the food sources of bivalves over a one-yr-cycle in relation to their growth. Reciprocally, the impact of shellfish farming on POM was also studied. Oysters and mussels were sampled and measured for biometry, stable isotopes and fatty acid composition. Water samples were collected at two sites, both inside and outside of the shellfish farming area, to determine concentrations in POM, chlorophyll a (Chl a) and stable isotopes. Carbon isotopes and fatty acids in bivalves reflected seasonal changes in food sources, which varied consistently with the environment. Seasonal changes in delta C-13 and fatty acids in the bivalves suggested that dietary phytoplankton contribution varied according to season. Terrestrial organic matter and bacteria can contribute to the diet of bivalves during non-bloom periods. Mussels seemed to rely more on diatoms and less on terrestrial organic matter and bacteria than oysters did, particularly when phytoplankton biomass was low during the summer. Although one- and two-yr-old oysters showed similar delta C-13, their fatty acid dynamics differed slightly. Periods of high growth rate in bivalves were mainly fuelled by diatoms, thus highlighting the importance of seasonal blooms of microphytoplankton during the critical period of bivalve growth and gamete production. Although there was no significant effect of shellfish farms on Chl a and POM delta C-13, consistent differences indicate that stable isotopes could be used successfully to investigate the effects of bivalve aquaculture. (C) 2011 Elsevier B.V. All rights reserved.
PY 2012
PD FEB
SO Journal Of Sea Research
SN 1385-1101
PU Elsevier Science Bv
VL 68
UT 000301688400003
BP 20
EP 32
DI 10.1016/j.seares.2011.11.004
ID 18575
ER

EF