FN Archimer Export Format
PT J
TI Recruitment of the Pacific oyster Crassostrea gigas in a shellfish-exploited Mediterranean lagoon: discovery, driving factors and a favorable environmental window
BT 
AF LAGARDE, Franck
   ROQUE D'ORBCASTEL, Emmanuelle
   UBERTINI, Martin
   MORTREUX, Serge
   BERNARD, Ismael
   FIANDRINO, Annie
   CHIANTELLA, Claude
   BEC, Beatrice
   ROQUES, Cecile
   BONNET, Delphine
   MIRON, Gilles
   RICHARD, Marion
   POUVREAU, Stephane
   LETT, Christophe
AS 1:1;2:1;3:1;4:1;5:2;6:1;7:1;8:3;9:3;10:3;11:4;12:1;13:5;14:6;
FF 1:PDG-ODE-LITTORAL-LERLR;2:PDG-ODE-LITTORAL-LERLR;3:PDG-ODE-LITTORAL-LERLR;4:PDG-ODE-LITTORAL-LERLR;5:;6:PDG-ODE-LITTORAL-LERLR;7:PDG-ODE-LITTORAL-LERLR;8:;9:;10:;11:;12:PDG-ODE-LITTORAL-LERLR;13:PDG-RBE-PFOM-PI;14:;
C1 IFREMER, UMR MARBEC, F-34200 Sete, France.
   Eureka Modelisat, F-22740 Lezardrieux, France.
   Univ Montpellier, UMR MARBEC, F-34095 Montpellier, France.
   Univ Moncton, Moncton, NB E1A 3E9, Canada.
   IFREMER, UMR LEMAR, Technopole Brest Iroise, F-29280 Plouzane, France.
   IRD, UMI Ummisco, F-34200 Sete, France.
C2 IFREMER, FRANCE
   EUREKA MODELISAT, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV MONCTON, CANADA
   IFREMER, FRANCE
   IRD, FRANCE
SI SETE
   ARGENTON
SE PDG-ODE-LITTORAL-LERLR
   PDG-RBE-PFOM-PI
UM LEMAR
   MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-univ-france
   copubli-int-hors-europe
IF 2.276
TC 18
UR https://archimer.ifremer.fr/doc/00398/50899/51672.pdf
LA English
DT Article
DE ;Crassostrea gigas;Oyster spat;Pediveliger;Metamorphosis;Recruitment;Oligo trophication;Larval ecology
AB In the context of increasing demand for environmental recovery, aquatic systems may face the challenge of evolving under oligotrophication. This is the case in Mediterranean lagoons, in particular the shellfish-farmed Thau lagoon in France, where we studied recruitment of the Pacific oyster Crassostrea gigas. Oyster spat and environmental parameters were monitored at several sampling sites for 3 yr (2012 to 2014) using an original method with a temporal overlap deployment of collectors to study pre- and post-settlement processes and to identify the best conditions for recruitment. Contrary to the ‘no Pacific oyster reproduction’ paradigm in Mediterranean lagoons, our study showed that recruitment of this introduced species is possible in the Thau lagoon at levels comparable to those in other traditional French breeding basins. We identified a favorable environmental window for recruitment characterized by high water temperature (>26.5°C) and high nanophytoplankton and Chaetoceros spp. abundances (>4.3 × 106 and 345 × 103 cells l-1, respectively). In these favorable conditions, we hypothesize that the ecosystem functions as an autotrophic system, in contrast to the heterotrophic system that characterizes unfavorable conditions. Under heterotrophic conditions, high abundances of mixotrophic and heterotrophic organisms (ciliates and dinoflagellates) limited the metamorphosis of C. gigas larvae, leading to poor recruitment. This study provides new knowledge on the reproduction of the Pacific oyster in a Mediterranean lagoon under warming and oligotrophication. The shellfish industry will profit from the discovery of spatfields to develop new nursery practices that are eco-friendly and limit risks of transfers with other spatfall areas. 
PY 2017
PD AUG
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 578
UT 000411308800001
BP 1
EP 17
DI 10.3354/meps12265
ID 50899
ER

EF