FN Archimer Export Format
PT J
TI Toxic dinoflagellates (Alexandrium fundyense and A-catenella) have minimal apparent effects on oyster hemocytes
BT 
AF HEGARET, Hélène
   WIKFORS, Gary H.
   SOUDANT, Philippe
   LAMBERT, Christian
   SHUMWAY, Sandra E.
   BERARD, Jean-Baptiste
   LASSUS, Patrick
AS 1:2;2:1;3:3;4:3;5:2;6:4;7:4;
FF 1:;2:;3:;4:PDG-DOP-DCOP-AQNC;5:;6:PDG-DOP-LER-LERMPL;7:PDG-DOP-DCN-EMP-PHYC;
C1 NOAA Fisheries, NE Fisheries Sci Ctr, Milford, CT 06460 USA.
   Univ Connecticut, Marine Sci Dept, Groton, CT 06340 USA.
   IUEM UBO, LEMAR, UMR 6539, Plouzane, France.
   IFREMER, F-44311 Nantes, France.
C2 NOAA, USA
   UNIV CONNECTICUT, USA
   IUEM, FRANCE
   IFREMER, FRANCE
SI SAINT VINCENT
   NANTES
SE PDG-DOP-DCOP-AQNC
   PDG-DOP-LER-LERMPL
   PDG-DOP-DCN-EMP-PHYC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 2.215
TC 59
UR https://archimer.ifremer.fr/doc/2007/publication-3328.pdf
LA English
DT Article
AB The possible effect of Alexandrium spp. containing paralytic shellfish poisoning (PSP) toxins on the hemocytes of oysters was tested experimentally. In one trial, eastern oysters, Crassostrea virginica Gmelin, were exposed to bloom concentrations of the sympatric dinoflagellate, Alexandrium fundyense Balech, alone and in a mixture with a non-toxic diatom, Thalassiosira weissflogii (Grun) Fryxell et Hasle. Subsequently, another experiment exposed Pacific oysters, Crassostrea gigas Thunberg, to a mixed suspension of the sympatric, toxic species Alexandrium catenella (Whedon et Kofoid) Balech, with T. weissflogii. Measurements of numbers of oyster hemocytes, percentages of different cell types, and functions (phagocytosis, reactive oxygen species (ROS) production, and mortality) were made using flow-cytometry. During and after exposure, almost no significant effects of Alexandrium spp. upon hemocyte numbers, morphology, or functions were detected, despite observations of adductor-muscle paralysis in C. virginica and measured toxin accumulation in C. gigas. The only significant correlation found was between toxin accumulation at one temperature and higher numbers of circulating live and dead hemocytes in C. gigas. The PSP toxins are known to interfere specifically with sodium-channel function; therefore, the finding that the toxins had no effect on measured hemocyte functions suggests that sodium-channel physiology is not important in these hemocyte functions. Finally, because oysters were exposed to the living algae, not purified toxins, there was no evidence of bioactive compounds other than PSP toxins affecting hemocytes in the two species of Alexandrium studied. 
PY 2007
PD AUG
SO Marine Biology
SN 0025-3162
PU Springer
VL 152
IS 2
UT 000248189300021
BP 441
EP 447
DI 10.1007/s00227-007-0703-3
ID 3328
ER

EF