FN Archimer Export Format
PT J
TI Effects of bioactive extracellular compounds and paralytic shellfish toxins produced by Alexandrium minutum on growth and behaviour of juvenile great scallops Pecten maximus
BT 
AF BORCIER, Elodie
   MORVEZEN, Romain
   BOUDRY, Pierre
   MINER, Philippe
   CHARRIER, Gregory
   LAROCHE, Jean
   HEGARET, Helene
AS 1:1;2:;3:1,2;4:1;5:;6:2;7:2;
FF 1:;2:;3:PDG-RBE-PFOM;4:PDG-RBE-PFOM-PI;5:;6:;7:;
C1 IFREMER, Ctr Bretagne, LEMAR, UMR 6539 UBO CNRS IRD Ifremer, F-29280 Plouzane, France.
   Inst Univ Europeen Mer, LEMAR, UMR 6539 UBO CNRS IRD Ifremer, Technopole Brest Iroise, Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-RBE-PFOM
   PDG-RBE-PFOM-PI
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.884
TC 47
UR https://archimer.ifremer.fr/doc/00368/47878/47893.pdf
LA English
DT Article
DE ;Harmful Algal Bloom (HAB);Alexandrium minutum;Pecten maximus;Paralytic Shellfish Toxins (PST);Extracellular compounds;Behaviour;Histology
AB Dinoflagellates of the genus Alexandrium are a major cause of harmful algal blooms (HABs) that have increasingly disrupted coastal ecosystems for the last several decades. Microalgae from the genus Alexandrium are known to produce paralytic shellfish toxins (PST) but also bioactive extracellular compounds (BEC) that can display cytotoxic, allelopathic, ichtyotoxic or haemolytic effects upon marine organisms. The objective of this experimental study was to assess the effects of PST and BEC produced by A. minutum upon juvenile great scallops Pecten maximus. Scallops were exposed for one week to two different strains of A. minutum, the first producing both PST and BEC and the second producing only BEC. Escape response to starfish, daily shell growth, histological effects, and accumulation of PST were recorded after one week of exposure, and after two subsequent weeks of recovery. Daily shell growth was delayed three days in scallops exposed to the BEC-producing A. minutum strain, probably during the three first days of exposure. An increase of reaction time to predators was observed in scallops exposed to the BEC condition, suggesting that BEC may have altered sensing processes. Scallops exposed to PST displayed a less-efficient escape response and muscular damage which could reflect the effects of paralytic toxins upon the nervous system of scallops. This study demonstrates contrasting effects of the distinct toxic compounds produced by A. minutum upon marine bivalves, thus highlighting the importance to better characterize these extracellular, bioactive compounds to better understand responses of other marine organisms.
PY 2017
PD MAR
SO Aquatic Toxicology
SN 0166-445X
PU Elsevier Science Bv
VL 184
UT 000395608900013
BP 142
EP 154
DI 10.1016/j.aquatox.2017.01.009
ID 47878
ER

EF