FN Archimer Export Format
PT J
TI A physiological and biochemical approach to selecting the ideal diet for Ostrea edulis (L.) broodstock conditioning (part A)
BT 
AF GONZALEZ-ARAYA, Ricardo
   QUEAU, Isabelle
   QUERE, Claudie
   MOAL, Jeanne
   ROBERT, Rene
AS 1:1,2;2:1;3:3;4:3;5:1;
FF 1:;2:PDG-RBE-PFOM-PI;3:PDG-RBE-PFOM-PI;4:PDG-RBE-PFOM-PI;5:PDG-RBE-PFOM-PI;
C1 IFREMER, Stat Expt Argenton, UMR Physiol & Ecophysiol Mollusques Marins 100, F-29840 Argenton Landunvez, France.
   Univ Los Lagos, Dept Acuicultura & Recursos Acuat, Osorno, Chile.
   IFREMER, Ctr Brest, UMR Physiol & Ecophysiol Mollusques Marins 100, Plouzane, France.
C2 IFREMER, FRANCE
   UNIV LOS LAGOS, CHILE
   IFREMER, FRANCE
SI ARGENTON
   BREST
SE PDG-RBE-PFOM-PI
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
   copubli-sud
IF 1.203
TC 25
UR https://archimer.ifremer.fr/doc/00033/14449/11748.pdf
LA English
DT Article
DE ;Ostrea edulis;conditioning;algal diets;ingestion;absorption;biochemical composition
AB To select the best microalgae for Ostrea edulis conditioning, four single species diets were fed to batches of broodstock, which were then compared using physiological and biochemical approaches. Ingestion and absorption were first studied, showing that Chaetoceros gracilis and Skeletonema marinoï were efficiently ingested (4.9–5.3 mg g−1 h−1) and absorbed (1.9–2.5 mg g−1 h−1) while Tetraselmis suecica led to the lowest physiological responses (0.36 and 0.12 mg g−1 h−1 respectively). When O. edulis were fed any microalgae except T-ISO with only 79 mg g−1, gonads accumulated carbohydrates from 116 to 141 mg g−1 and the extent of accumulation depended on the species supplied in the order T. suecica<C. gracilis<S. marinoï. When oysters were fed either of the diatoms (C. gracilis or S. marinoï), an efficient transfer of 20:5(n-3) to all tissues, including the gonads, was recorded while no enrichment in 22:6(n-3) occurred in all tissues (polar fraction) when oysters were fed T-ISO. In contrast (22:5(n-6)), a characteristic fatty acid of T-ISO accumulated in all tissues, confirming its allocation despite particularly low ingestion (1.66 mg g−1 h−1) and absorption (0.32 mg g−1 h−1). When oysters were fed C. gracilis or S. marinoï an efficient transfer of cholesterol and campesterol from diatoms to the gonads was observed, while no sterol accumulation occurred in the gonad when fed T. suecica. Because of low ingestion, absorption and poor biochemical compounds' transfer, T. suecica is not recommended for O. edulis conditioning. T-ISO also exhibited low physiological performances but due to a specific 22:6(n-3) enrichment in the gonad neutral fraction (16.1%), its potential role in reproduction should be considered. Chaetoceros gracilis is highly recommended for O. edulis broodstock while a source of DHA other than that provided by T-ISO should be found due to its poor absorption. Because a mixed diet has been shown to be more efficient for O. edulis broodstock conditioning, complementary trials dealing with the effects of other species rich in 22:6(n-3) such as Rhodomonas salina or Pavlova lutheri should be performed.
PY 2011
PD APR
SO Aquaculture Research
SN 1355-557X
PU Wiley-blackwell
VL 42
IS 5
UT 000289484400009
BP 710
EP 726
DI 10.1111/j.1365-2109.2010.02731.x
ID 14449
ER

EF