FN Archimer Export Format
PT J
TI Interspecific comparison of Cd bloaccumulation in European Pectinidae (Chlamys varia and Pecten maximus)
BT 
AF METIAN, M
   WARNAU, M
   OBERHANSLI, F
   TEYSSIE, J
   BUSTAMANTE, Paco
AS 1:1,2;2:2;3:2;4:2;5:1,3;
FF 1:;2:;3:;4:;5:;
C1 Univ La Rochelle, IFREMER, CNRS, UMR 6217,Ctr Rech Ecosyst Littoraux Anthropises, F-17042 La Rochelle 1, France.
   Marine Environm Labs, IAEA, MC-98000 Monaco, Monaco.
C2 UNIV LA ROCHELLE, FRANCE
   IAEA, MONACO
   IFREMER, FRANCE
SI UNIV-FRANCAISE
SE PDG-DOP-DCN-AGSAE-CRELA
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 1.75
TC 40
UR https://archimer.ifremer.fr/doc/2007/publication-3581.pdf
LA English
DT Article
DE ;Subcellular distribution;Scallops;Metal;Kinetics;Cadmium;Bivalves
AB The uptake and loss kinetics of Cd were determined in two species of scallops from the European coasts, the variegated scallop Chlamys varia and the king scallop Pecten maximus, following exposures via seawater, phytoplankton and sediment using highly sensitive radiotracer techniques (Cd-109). Results indicate that, for seawater and dietary pathways, C. varia displays higher bioaccumulation capacities in terms of uptake rate from water and fraction absorbed from ingested food (assimilation efficiency) than Pecten maximus. Regarding sediment exposure, P. maximus displayed low steady-state Cd transfer factor (TFSS < 1); however, once incorporated, a very large part of Cd transferred from sediment (92%) was strongly retained within R maximus tissues.   Both species showed a high retention capacity for Cd (biological half-life, T-b1/2 > 4 months), suggesting efficient mechanisms of detoxification and storage in both species. The digestive gland was found to be the main storage organ of Cd in the two scallops regardless of the exposure pathway. However, Cd was stored differently within this organ according to the species considered: 40% of the total Cd was found in the soluble cellular fraction in C. varia whereas this soluble fraction reached 80% for P. maximus. This suggests that the two species displayed different Cd detoxification/storage mechanisms.   Finally, the present study has determined the relative contribution of the different exposure pathways to global Cd bioaccumulation for the two scallop species. Results clearly show that for both species, food constitutes the major accumulation pathway, contributing for >99% and 84% of the global Cd bioaccumulation in C. varia and R maximus, respectively. This work confirms the previous assumption, derived from a bibliographic overview, that dietary pathway plays a prevalent role in metal bioaccumulation in Pectinidae. (C) 2007 Elsevier B.V. All rights reserved.
PY 2007
PD DEC
SO Journal of Experimental Marine Biology and Ecology
SN 0022-0981
PU Elsevier
VL 353
IS 1
UT 000252014900006
BP 58
EP 67
DI 10.1016/j.jembe.2007.09.001
ID 3581
ER

EF