FN Archimer Export Format PT J TI Feeding and energetics of the great scallop, Pecten maximus, through a DEB model BT AF LAVAUD, Romain FLYE-SAINTE-MARIE, Jonathan JEAN, Fred EMMERY, Antoine STRAND, Oivind KOOIJMAN, Sebastiaan A. L. M. AS 1:1;2:1;3:1;4:2;5:3;6:4; FF 1:;2:;3:;4:PDG-RBE-PFOM-PI;5:;6:; C1 Univ Brest, Inst Univ Europeen Mer, CNRS IRD UBO, Lab Sci Environnem Marin,UMR6539, Plouzane, France Ifremer, Stn Expt Argenton, Argenton, France IMR, Bergen, Norway Vrije Univ, Inst Ecol Sci, Dept Theoret Biol, Amsterdam, Netherlands C2 UBO, FRANCE IFREMER, FRANCE INST MARINE RES, NORWAY UNIV VRIJE AMSTERDAM, NETHERLANDS SI ARGENTON SE PDG-RBE-PFOM-PI IN WOS Ifremer jusqu'en 2018 copubli-france copubli-europe copubli-univ-france IF 1.99 TC 22 UR https://archimer.ifremer.fr/doc/00162/27316/25546.pdf https://archimer.ifremer.fr/doc/00162/27316/28458.pdf LA English DT Article BO Albert Lucas DE ;Pecten maximus;DEB theory;Synthesizing Units;Phytoplankton;Feeding process;Bay of Brest AB We developed a full life-cycle bioenergetic model for the great scallop P. maximusrelying on the concepts of the Dynamic Energy Budget (DEB) theory. The covariation method was implemented to estimate the parameters of a standard DEB model. Such models are able to predict various metabolic processes from a food availability marker and temperature in the environment. However, suspension-feeders are likely to feed on various trophic sources, from microalgae cells to detritus. They are also able to sort and select food particles very efficiently, depending on their size, energetic value or quality. The present model includes a mechanistic description of the feeding processes, based on Kooijman’s Synthesizing Unit principle which allow to deal with several food sources. Moreover we tested the hypothesis of a differential selectivity between two potential substrates (phytoplankton cell and the remaining particulate organic matter). Simulations of shell length, daily shell growth rate, dry weight and gonado-somatic index (GSI) variations were realized and compared to field data from a monitoring conducted in the Bay of Brest (Brittany, France) for six years. The model shown its capacity to efficiently reproduce all life history traits of the wild great scallops. Predicted length data were estimated to the nearest millimeter. The fit of simulated weights to observed data was very satisfactory. GSI predictions were also in accordance with observations but improvements are required to better capture the sharp increase of gametogenesis at the beginning of the year. Finally, results bring evidences that P. maximusis actually preferentially feeding on living algae cells rather than on the rest of organic particles. PY 2014 PD NOV SO Journal Of Sea Research SN 1385-1101 PU Elsevier Science Bv VL 94 UT 000348014300002 BP 5 EP 18 DI 10.1016/j.seares.2013.10.011 ID 27316 ER EF