Cadmium bioaccumulation and retention kinetics in the Chilean blue mussel Mytilus chilensis: seawater and food exposure pathways.

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Show simple item record Hervé-Fernández, P Houlbrèque, F Boisson, F Mulsow, S Teyssié, JL Oberhaënsli, F Azemard, S Jeffree, R 2012-02-02T08:03:32Z 2010-09
dc.identifier.citation Aquatic toxicology (Amsterdam, Netherlands), 2010, 99 (4), pp. 448 - 456
dc.identifier.issn 0166-445X
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract The Chilean blue mussel (Mytilus chilensis, Hupe 1854) represents the most important bivalve exploited along the Chilean coast and is a major food source for the Chilean population. Unfortunately, local fish and shellfish farming face severe problems as a result of bioaccumulation of toxic trace metals into shellfishes. Blue mussels collected along the Chilean coasts contain levels of Cd above the regulatory limits for human consumption. In this study, we examined the bioaccumulation, depuration and organ distribution of Cd in the M. chilensis, from 109Cd-labelled bulk seawater and from feeding with 109Cd-labelled algae. The uptake of 109Cd via seawater displayed a simple exponential kinetic model suggesting that cadmium activity tends to reach an equilibrium value of 1.838+/-0.175 ng g(-1) (mean+/-asymptotic standard error, p < 0.001) after 78+/-9 days. The depuration rate for 109Cd accumulated via seawater was slow, with only 21% of the total 109Cd accumulated in the whole mussel being eliminated after 52 days. Total elimination of Cd in mussels was adequately described by a double component kinetic model, in which the biological half-life for the long-lived component represents more than 6 months. In contrast, depuration after radiolabelled food uptake was fast, reaching only 20% of retention in 10 days. This knowledge of the long half-life of cadmium accumulated via seawater as well as the non-negligible level of cadmium accumulated into the shells is relevant to the management of Cd levels in this species and the refinement of detoxification processes in order to comply with authorized Cd levels.
dc.format Print-Electronic
dc.language eng
dc.relation.isbasedon 10.1016/j.aquatox.2010.06.004
dc.title Cadmium bioaccumulation and retention kinetics in the Chilean blue mussel Mytilus chilensis: seawater and food exposure pathways.
dc.type Journal Article
dc.parent Aquatic toxicology (Amsterdam, Netherlands)
dc.journal.volume 4
dc.journal.volume 99
dc.journal.number 4 en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 448 en_US
dc.identifier.endpage 456 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0601 Biochemistry and Cell Biology
dc.personcode 110409
dc.percentage 100 en_US Biochemistry and Cell Biology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Animals
dc.description.keywords Water Pollutants, Chemical
dc.description.keywords Seawater
dc.description.keywords Kinetics
dc.description.keywords Mytilus
dc.description.keywords Cadmium Radioisotopes
dc.description.keywords Models, Biological
dc.description.keywords Chile
dc.description.keywords Fisheries
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false

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