FN Archimer Export Format
PT J
TI Impact of environmental variability on Pinctada margaritifera life-history traits: A full life cycle deb modeling approach
BT 
AF Sangare, Nathanael
   Lo-Yat, Alain
   LE MOULLAC, Gilles
   Pecquerie, Laure
   THOMAS, Yoann
   Lefebvre, Sebastien
   LE GENDRE, Romain
   Beliaeff, Benoit
   Andréfouët, Serge
AS 1:1;2:1;3:1;4:2;5:2;6:3;7:4;8:1;9:5;
FF 1:;2:PDG-RBE-RMPF;3:PDG-RBE-RMPF;4:;5:;6:;7:PDG-RBE-LEADNC;8:PDG-DCOP;9:;
C1 Ifremer, UMR Ecosystèmes Insulaires Océaniens, UPF, ILM, IRD, Taravao, F-98719, Tahiti, French Polynesia
   Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
   Université de Lille, CNRS, ULCO, UMR 8187 LOG, F-62930 Wimereux, France
   IFREMER, LEAD NC, Nouméa, New Caledonia
   UMR 9220 ENTROPIE, Institut de Recherche Pour le Développement, (IRD,Université de la Réunion, Université de la Nouvelle-Calédonie, Ifremer, CNRS), B.P.A5, 98848 Nouméa, New Caledonia
C2 IFREMER, FRANCE
   IRD, FRANCE
   UNIV LILLE, FRANCE
   IFREMER, FRANCE
   IRD, FRANCE
SI TAHITI
   NOUMEA
SE PDG-RBE-RMPF
   PDG-RBE-LEADNC
   PDG-DCOP
UM LEMAR
   EIO
   ENTROPIE
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-p187
   copubli-univ-france
IF 2.974
TC 19
UR https://archimer.ifremer.fr/doc/00613/72469/71614.pdf
LA English
DT Article
DE ;Bivalve;Physiology;Bioenergetics;Dynamic energy budget theory;Environmental change;Pearl farming
AB The black-lipped pearl oyster (Pinctada margaritifera) is extensively farmed in French Polynesia to produce black pearls. For a sustainable management of marine resources, studying interactions between organisms and environment, and the associated factors and processes that will impact their life cycle and thus modulate population dynamics is a major research priority. Here, we describe black-lipped pearl oyster energy acquisition and use, and its control by temperature and food concentration within the Dynamic Energy Budget (DEB) theory framework. The model parametrization was based on literature data and a specific laboratory experiment. Model validation was carried out thanks to historical in-situ datasets and a dedicated field survey. Three theoretical environmental scenarios were built to investigate the response of the pearl oyster to environmental variations. We successfully modeled a wide range of life-stage-specific traits and processes, especially the delayed acceleration of growth after settlement. Applying the model on field data collected at three different culture sites required only one free-fitted parameter, the half saturation coefficient Xk, which controls how ingestion depends on food density. Xk integrates all variations linked to the trophic environment. Analysis of the kinetics of energy fluxes under theoretical environmental scenarios suggests that temperature variations induce seasonality of reproduction in a species thought to spawn opportunistically throughout the whole year. The major influence of food concentration fluctuations on growth rate and reproductive effort is highlighted. The model showed the lower performances associated with recovery time between food-rich and starvation periods. The implications of these findings in the context of black pearl farming in a changing environment are discussed. 
PY 2020
PD MAY
SO Ecological Modelling
SN 0304-3800
PU Elsevier BV
VL 423
UT 000525397200004
DI 10.1016/j.ecolmodel.2020.109006
ID 72469
ER

EF