FN Archimer Export Format
PT J
TI Seasonal changes in carbohydrate metabolism and its relationship with summer mortality of Pacific oyster Crassostrea gigas (Thunberg) in Marennes-Ole'ron bay (France)
BT 
AF SOLETCHNIK, Patrick
   FAURY, Nicole
   GOULLETQUER, Philippe
AS 1:1;2:2;3:2;
FF 1:PDG-DOP-LER-LERPC;2:PDG-DOP-DCN-AGSAE-LGP;3:PDG-DOP-DCN-AGSAE;
C1 IFREMER, LERPC, F-17390 La Tremblade, France.
   IFREMER, LGP, F-17390 La Tremblade, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI LA TREMBLADE
SE PDG-DOP-LER-LERPC
   PDG-DOP-DCN-AGSAE-LGP
   PDG-DOP-DCN-AGSAE
IN WOS Ifremer jusqu'en 2018
IF 2.081
TC 48
UR https://archimer.ifremer.fr/doc/2006/publication-1116.pdf
LA English
DT Article
DE ;Marennes Oleron bay;Glycogenolysis;In vivo;Glycogen incorporation;Maturation;Summer mortality;Crassostrea gigas
AB This paper investigates the biological responses of Crassostrea gigas under traditional culture conditions on a mudflat in Marennes-Oleron bay. Summer mortality has been regularly observed in recent years in oysters reared using "on bottom" culture conditions. The present study attempts to provide a better understanding of the mortality phenomenon through biological parameters. Classical 'field parameters' such as mortality and growth rates, and quality index (dry meat weight/ dry shell weight x 1000) were monitored. Additional parameters, as biochemical composition of oyster meat and glucose incorporation capacity, were included as potential new bioindicators. The work highlighted a critical timing (May-June) preceding the summer mortality and characterised by an arrest in lipid synthesis and a decrease in carbohydrate content. During this period, growth (especially gonad maturation) either slowed down significantly or even stopped. The first mortality event occurred during a growth renewal period at the end of June. Short-term analysis (15 days) provided information to identify such responses which may indicate a physiological stress and demonstrating the need for further investigation. The seasonal food availability (estimated from chlorophyll a levels) did not facilitate the mortality understanding which occurred after water temperature went above 18-19 T. Nevertheless, this study shows carbohydrate anabolism contributed in the physiological stress leading to mortality events. 
PY 2006
PD MAR
SO Aquaculture
SN 0044-8486
PU Elsevier
VL 252
IS 2-4
UT 000235784200023
BP 328
EP 338
DI 10.1016/j.aquaculture.2005.07.008
ID 1116
ER

EF