FN Archimer Export Format
PT J
TI New insights into the seasonal feeding ecology of Pecten maximus using pigments, fatty acids and sterols analyses
BT 
AF LAVAUD, Romain
   ARTIGAUD, Sebastien
   LE GRAND, Fabienne
   DONVAL, Anne
   SOUDANT, Philippe
   FLYE-SAINTE-MARIE, Jonathan
   STROHMEIER, Tore
   STRAND, Oivind
   LEYNAERT, Aude
   BEKER, Beatriz
   CHATTERJEE, Arnab
   JEAN, Fred
AS 1:1,2;2:2;3:2;4:2;5:2;6:2;7:3;8:3;9:4;10:2;11:2;12:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 Fisheries & Oceans Canada, Peches & Oceans Canada, Gulf Ctr, Ctr Golfe, Moncton, NB E1C 9B6, Canada.
   Univ Brest, Inst Univ Europeen Mer, CNRS,UBO,IRD,Ifremer, Lab Sci Environm Marin,UMR6539, F-29280 Plouzane, France.
   IMR, N-5005 Bergen, Norway.
C2 MPO, CANADA
   UBO, FRANCE
   IMR, NORWAY
   CNRS, FRANCE
UM LEMAR
IF 2.359
TC 11
UR https://archimer.ifremer.fr/doc/00431/54244/55570.pdf
   https://archimer.ifremer.fr/doc/00431/54244/55772.pdf
LA English
DT Article
DE ;Trophic ecology;Food sources;Pigments;Fatty acids;Trophic marker;Phytoplankton;Pecten maximus
AB We combined the use of pigments, fatty acids and sterols as biomarkers of the seasonal variation in food sources of the great scallop Pecten maximus. From March to October 2011, on a biweekly to twice-weekly basis, scallops and seawater from the water column and the water-sediment interface were collected in the Bay of Brest (Brittany, France). Pigment compositions in the seawater and in the stomach and rectum content of the scallops were analyzed by HPLC. Fatty acids and sterols from digestive gland (DG) tissue were analyzed by gas chromatography. Potential relationships between the temporal proportion of each marker in the environment and in the digestive tract were tested using multivariate analysis. Proportions of diatoms and Dinophyceae biomarkers alternated in the digestive tract of P. maximus. This switch of feeding was confirmed by the polar lipid composition of the DG. Peridinin, characterizing Dinophyceae, occurred in high proportions in the digestive tract compared to the low ambient concentration, suggesting a selection of this microalgae group by the scallop. Chlorophyceae and green macroalgae tracers were found in low proportions, suggesting they were not actually ingested. Markers of Prymnesiophyceae were also observed at significant levels. Cyanobacteria tracers showed that this microalgae class was not ingested by the scallops during monitoring but may be of higher importance during winter. Switching from one food source to another as well as selectivity in feeding are discussed relative to the season. 
PY 2018
PD MAR
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 590
UT 000428817200008
BP 109
EP 129
DI 10.3354/meps12476
ID 54244
ER

EF