FN Archimer Export Format
PT J
TI Effects of copper and butyltin compounds on the growth, photosynthetic activity and toxin production of two HAB dinoflagellates : the planktonic Alexandrium catenella and the benthic Ostreopsis cf. ovata
BT 
AF COUET, Douglas
   PRINGAULT, Olivier
   BANCON-MONTIGNY, Chrystelle
   BRIANT, Nicolas
   POULICHET, Francoise Elbaz
   DELPOUX, Sophie
   YAHIA, Ons Kefi-Daly
   HELA, BenGharbia
   CHARAF, M'Rabet
   HERVE, Fabienne
   ROVILLON, Georges-Augustin
   AMZIL, Zouher
   LAABIR, Mohamed
AS 1:1,2;2:1;3:3;4:4;5:3;6:3;7:2;8:2;9:2;10:4;11:4;12:4;13:1;
FF 1:;2:;3:;4:PDG-RBE-BE-LBCM;5:;6:;7:;8:;9:;10:PDG-ODE-DYNECO-PHYC;11:PDG-ODE-DYNECO-PHYC;12:PDG-ODE-DYNECO-PHYC;13:;
C1 Montpellier Univ, CNRS, IFREMER,IRD, Ctr Marine Biodivers Exploitat & Conservat MARBEC, Pl Eugene Bataillon, F-34095 Montpellier, France.
   IRESA Carthage Univ, Tunisian Natl Inst Agron INAT, Res Grp Oceanog & Plankton Ecol, 43 Ave Charles Nicolle, Tunis 1082, Tunisia.
   Univ Montpellier, CNRS, Hydrosci Montpellier, IRD, Montpellier, France.
   IFREMER, Phycotoxins Lab, BP 21105, F-44311 Nantes, France.
C2 UNIV MONTPELLIER, FRANCE
   UNIV CARTHAGE, TUNISIA
   CNRS, FRANCE
   IFREMER, FRANCE
SI NANTES
SE PDG-RBE-BE-LBCM
   PDG-ODE-DYNECO-PHYC
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.794
TC 21
UR https://archimer.ifremer.fr/doc/00418/52970/53896.pdf
LA English
DT Article
DE ;Alexandrium catenella;Ostreopsis cf. ovata;Cu;Butyltin;Photosynthesis;Toxins
AB Controlled laboratory experiments were conducted to test the effects of copper (Cu2+) and butyltins (BuT) on the growth, photosynthetic activity and toxin content of two HABs (Harmful Algal Blooms) dinoflagellates, the planktonic Alexandrium catenella and the benthic Ostreopsis cf. ovata. Microalgae were exposed to increasing concentrations of Cu2+ (10−4 to 31 nM) or BuT (0.084 to 84 nM) for seven days. When considering the growth, EC50 values were 0.16 (±0.09) nM and 0.03 (±0.02) nM of Cu2+ for A. catenella and O. cf. ovata, respectively. Regarding BuT, EC50 was 14.2 (±6) nM for O. cf. ovata, while A. catenella growth inhibition appeared at BuT concentrations ≥27 nM. Photosynthetic activity of the studied dinoflagellates decreased with increasing Cu and BuT concentrations. For O. cf. ovata, the response of this physiological parameter to contamination was less sensitive than the biomass. Cu exposure induced the formation of temporary cysts in both organisms that could resist adverse conditions. The ovatoxin-a and -b concentrations in O. cf. ovata cells increased significantly in the presence of Cu. Altogether, the results suggest a better tolerance of the planktonic A. catenella to Cu and BuT. This could result in a differentiated selection pressure exerted by these metals on phytoplankton species in highly polluted waters. The over-production of toxins in response to Cu stress could pose supplementary health and socio-economic threats in the contaminated marine ecosystems where HABs develop. 
PY 2018
PD MAR
SO Aquatic Toxicology
SN 0166-445X
PU Elsevier Science Bv
VL 196
UT 000426411600017
BP 154
EP 167
DI 10.1016/j.aquatox.2018.01.005
ID 52970
ER

EF