FN Archimer Export Format
PT J
TI Gametogenesis, spawning behavior and larval abundance of the Pacific oyster Crassostrea gigas in the Thau lagoon: Evidence of an environment-dependent strategy
BT 
AF UBERTINI, Martin
   LAGARDE, Franck
   MORTREUX, Serge
   LE GALL, Patrik
   CHIANTELLA, Claude
   FIANDRINO, Annie
   BERNARD, Ismael
   POUVREAU, Stephane
   ROQUE D'ORBCASTEL, Emmanuelle
AS 1:1;2:1;3:1;4:1;5:1;6:1;7:2;8:3;9:1;
FF 1:PDG-ODE-LITTORAL-LERLR;2:PDG-ODE-LITTORAL-LERLR;3:PDG-ODE-LITTORAL-LERLR;4:PDG-ODE-LITTORAL-LERLR;5:PDG-ODE-LITTORAL-LERLR;6:PDG-ODE-LITTORAL-LERLR;7:;8:PDG-RBE-PFOM-PI;9:PDG-ODE-LITTORAL-LERLR;
C1 IFREMER, UMR MARBEC, F-34200 Sete, France.
   Eureka Modalisat, F-22740 Lezardrieux, France.
   IFREMER, UMR LEMAR, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   EUREKA MODALISAT, FRANCE
   IFREMER, FRANCE
SI SETE
   ARGENTON
SE PDG-ODE-LITTORAL-LERLR
   PDG-RBE-PFOM-PI
UM LEMAR
   MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 2.71
TC 17
UR https://archimer.ifremer.fr/doc/00369/48032/48118.pdf
LA English
DT Article
DE ;Mollusc physiology;Spawning triggers;Oysters
AB The Thau lagoon, located at the South of France, provides 10% of the French pacific oyster Crassostrea gigas production. Despite this intensive shellfish production, the larval recruitment of this species within the Thau lagoon is still misunderstood and spat collection remains highly variable; as a consequence, shellfish farmers rely mostly on hatchery”s spat. The present study aimed to describe reproduction features of C. gigas within the Mediterranean, as well as to explore spawning triggers of this species. To achieve this goal, the reproduction cycle from gametogenesis to spawning was followed during two years in several locations within the Mediterranean Thau lagoon. The spawning behavior of C. gigas within the Thau lagoon appeared to be slightly different from the one of the Atlantic Coast, showing several spawning events from June to October. The minimal temperature for massive spawning was 23 °C, which is much higher than temperatures mentioned in the literature for this species. A strong relationship was found between phytoplankton communities and gametogenesis, the latter being improved by a higher diatom/dinoflagellate ratio. Temperature was insufficient alone to explain spawning, highlighting other potential triggers such as the moon or lightning strikes. We made the hypothesis of a hierarchy of events triggering spawning, encompassing locking, synchrony and intensifying triggers. Statement of relevance  This paper is filling in a gap in the literature regarding to reproduction of C. gigas in the Thau lagoon, which is always associated to temperature. However, temperature may not be the only factor involved in oyster reproduction, that is what we tried to show in this paper.
PY 2017
PD APR
SO Aquaculture
SN 0044-8486
PU Elsevier Science Bv
VL 473
UT 000402463100006
BP 51
EP 61
DI 10.1016/j.aquaculture.2017.01.025
ID 48032
ER

EF