Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus - Is trophic transfer important

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dc.contributor.author Calhoa, Carla en_US
dc.contributor.author Soares, Amadeu en_US
dc.contributor.author Mann, Reinier en_US
dc.contributor.editor en_US
dc.date.accessioned 2010-05-28T09:45:31Z
dc.date.available 2010-05-28T09:45:31Z
dc.date.issued 2006 en_US
dc.identifier 2006008696 en_US
dc.identifier.citation Calhoa Carla, Soares Amadeu, and Mann Reinier 2006, 'Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus - Is trophic transfer important', Elsevier Inc, vol. 371, pp. 206-213. en_US
dc.identifier.issn 0048-9697 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/8798
dc.description.abstract Terrestrial isopods have become important tools for the ecotoxicological assessment of metal-contaminated soils. Their value as an invertebrate model is partly because of their extraordinary capacity to bioaccumulate toxic metals from the environment. Replication of this accumulation process in the laboratory has in the past relied on the amendment of organic food substrates through the addition of inorganic metal salts. However, the bioavailability of the metals when presented through doping regimes may differ from the bioavailability of metals in nature, because over time metals become biologically compartmentalised and form complexes with organic molecules. This study examines the differential bioavailability of Cd to the terrestrial isopod, Porcellio dilatatus, when presented as either a Cd-amended diet or pre-incorporated biologically into lettuce (Lactuca sativa). Isopods were either provided with lettuce contaminated superficially with Cd(NO3)2 or lettuce grown hydroponically in growth media containing 100 ?M Cd(NO3)2. Assimilation efficiency of Cd was greater among isopods that were fed the amended diet (71%, S.E. = 7%), than among isopods feeding on biologically contaminated lettuce (52%, S.E. = 5%) and demonstrates that speciation of Cd is likely to influence the rate of Cd assimilation and accumulation in a laboratory test. en_US
dc.language en_US
dc.publisher Elsevier Inc en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.scitotenv.2006.09.013 en_US
dc.title Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus - Is trophic transfer important en_US
dc.parent Science of the Total Environment en_US
dc.journal.volume 371 en_US
dc.journal.number en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 206 en_US
dc.identifier.endpage 213 en_US
dc.cauo.name DVCRch.Institute for Water & Environmental Resource Mgmnt en_US
dc.conference Verified OK en_US
dc.for 060200 en_US
dc.personcode 0000031727 en_US
dc.personcode 0000031724 en_US
dc.personcode 998973 en_US
dc.percentage 100 en_US
dc.classification.name Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Heavy metal; Cadmium; Bioavailability; Trophic transfer; Terrestrial ecotoxicology; Lactuca sativa en_US
dc.staffid 998973 en_US


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