FN Archimer Export Format
PT J
TI Effects of Alexandrium minutum exposure upon physiological and hematological variables of diploid and triploid oysters, Crassostrea gigas
BT 
AF HABERKORN, Hansy
   LAMBERT, Christophe
   LE GOIC, Nelly
   GUEGUEN, Marielle
   MOAL, Jeanne
   PALACIOS, Elena
   LASSUS, Patrick
   SOUDANT, Philippe
AS 1:1;2:1;3:1;4:2;5:3;6:4;7:2;8:1;
FF 1:;2:;3:;4:PDG-DOP-DCN-EMP-PHYC;5:PDG-DOP-DCB-PFOM-PI;6:PDG-DOP-DCB-PFOM-PI;7:PDG-DOP-DCN-EMP-PHYC;8:;
C1 Univ Bretagne Occidentale, Lab Sci Environm Marin, Inst Univ Europeen Mer, F-29280 Plouzane, France.
   IFREMER Ctr Nantes, Lab Phycotoxines, F-44311 Nantes, France.
   IFREMER, Ctr Brest, Lab Physiol Mollusques, F-29280 Plouzane, France.
   Ctr Invest Biol Noroeste CIBNOR, La Paz, Bcs, Mexico.
C2 UBO, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   CIBNOR, MEXICO
SI BREST
   NANTES
SE IUEM
   PDG-DOP-DCN-EMP-PHYC
   PDG-DOP-DCB-PFOM-PI
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.333
TC 63
UR https://archimer.ifremer.fr/doc/00003/11378/7988.pdf
LA English
DT Article
DE ;Oysters;Ploidy;Physiology;Harmful-algal bloom;Alexandrium minutum;PST accumulation
AB The effects of an artificial bloom of the toxin-producing dinoflagellate, Alexandrium minutum, upon physiological parameters of the Pacific oyster, Crassostrea gigas, were assessed. Diploid and triploid oysters were exposed to cultured A. minutum and compared to control diploid and triploid oysters fed T. Isochrysis. Experiments were repeated twice, in April and mid-May 2007, to investigate effects of maturation stage on oyster responses to A. minutum exposure. Oyster maturation stage, Paralytic Shellfish Toxin (PST) accumulation, as well as several digestive gland and hematological variables, were assessed at the ends of the exposures. In both experiments, triploid oysters accumulated more PSTs (approximately twice) than diploid oysters. Significant differences, in terms of phenoloxidase activity (PO) and reactive oxygen species (ROS) production of hemocytes, were observed between A. minutum-exposed and non-exposed oysters. PO in hemocytes was lower in oysters exposed to A. minutum than in control oysters in an early maturation stage (diploids and triploids in April experiment and triploids in May experiment), but this contrast was reversed in ripe oysters (diploids in May experiment). In the April experiment, granulocytes of oysters exposed to A. minutum produced more ROS than those of control oysters; however, in the May experiment, ROS production of granulocytes was lower in A. minutum-exposed oysters. Moreover, significant decreases in free fatty acid, monoacylglycerol, and diacylglycerol contents in digestive glands of oysters exposed to A. minutum were observed. Concurrently, the ratio of reserve lipids (triacylglycerol, ether glycerides and sterol esters) to structural lipids (sterols) decreased upon A. minutum exposure in both experiments. Also, several physiological responses to A. minutum exposure appeared to be modulated by maturation stage as well as ploidy of the oysters. (C) 2009 Elsevier B.V. All rights reserved.
PY 2010
PD APR
SO Aquatic Toxicology
SN 0166-445X
PU Elsevier Science Bv
VL 97
IS 2
UT 000276665300003
BP 96
EP 108
DI 10.1016/j.aquatox.2009.12.006
ID 11378
ER

EF