FN Archimer Export Format
PT J
TI In situ use of bivalves and passive samplers to reveal water contamination by microcystins along a freshwater-marine continuum in France
BT 
AF Lance, Emilie
   Lepoutre, Alexandra
   SAVAR, Veronique
   ROBERT, Elise
   Bormans, Myriam
   Amzil, Zouher
AS 1:1,2;2:1;3:3;4:3;5:4;6:3;
FF 1:;2:;3:PDG-ODE-DYNECO-PHYC;4:PDG-ODE-DYNECO-PHYC;5:;6:PDG-ODE-DYNECO-PHYC;
C1 UMR-I 02 SEBIO, BP 1039, 51687 REIMS Cedex 2, France
   UMR MNHN/CNRS MCAM, Muséum National d'Histoire Naturelle, 75005 Paris
   Ifremer/Phycotoxins Laboratory, F-44311 Nantes, France
   UMR 6553 Ecobio, CNRS Univ Rennes, F-35000 RENNES, France
C2 UNIV REIMS, FRANCE
   MNHN, FRANCE
   IFREMER, FRANCE
   UNIV RENNES, FRANCE
SI NANTES
SE PDG-ODE-DYNECO-PHYC
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 13.4
TC 12
UR https://archimer.ifremer.fr/doc/00720/83163/88065.pdf
LA English
DT Article
DE ;Cyanotoxins;Biosurvey;Molluscs;Solid phase adsorption toxin tracking (SPATT)
AB Cyanobacteria are a potential threat to aquatic ecosystems and human health because of their ability to produce cyanotoxins, such as microcystins (MCs). MCs are regularly monitored in fresh waters, but rarely in estuarine and marine waters despite the possibility of their downstream export. Over a period of two years, we monthly analysed intracellular (in phytoplankton) and extracellular (dissolved in water) MCs at five stations along a river continuum from a freshwater reservoir with ongoing cyanobacterial blooms to the coast of Brittany, France. MCs were quantified using two integrative samplers placed at each site: solid phase adsorption toxin tracking (SPATT) samplers for collecting extracellular MCs and caged mussels (Anodonta anatina and Mytilus edulis) filter-feeding on MC-producing cyanobacteria. The MC transfer was demonstrated each year during five months at estuarine sites and sporadically at the marine outlet. SPATT samplers integrated extracellular MCs, notably at low environmental concentrations (0.2 µg/L) and with the same variant profile as in water. The mussel A. anatina highlighted the presence of MCs including at intracellular concentrations below 1 µg/L. M. edulis more efficiently revealed the MC transfer at estuarine sites than punctual water samplings. Bivalves showed the same MC variant profile as phytoplankton samples, but with differential accumulation capacities between the variants and the two species. Using SPATT or bivalves can give a more accurate assessment of the contamination level of a freshwater-marine continuum, in which the MC transfer can be episodic. MC content in M. edulis represents a potent threat to human health if considering updated French guideline values, and particularly the total (free and protein-bound) MC content, highlighting the necessity to include cyanotoxins in the monitoring of seafood originating from estuarine areas. 
PY 2021
PD OCT
SO Water Research
SN 0043-1354
PU Elsevier BV
VL 204
UT 000697775900003
DI 10.1016/j.watres.2021.117620
ID 83163
ER

EF