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Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus--is trophic transfer important?
Sci Total Environ. 2006 Dec 01; 371(1-3):206-13.ST

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(NO(3))(2) or lettuce grown hydroponically in growth media containing 100 microM Cd(NO(3))(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.

Authors+Show Affiliations

CESAM - Centro de Estudos de Ambiente e do Mar, Departamento de Biologia, Universidade de Aveiro, Aveiro 3810-193, Portugal.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17055036

Citation

Calhôa, Carla Filipa, et al. "Cadmium Assimilation in the Terrestrial Isopod, Porcellio Dilatatus--is Trophic Transfer Important?" The Science of the Total Environment, vol. 371, no. 1-3, 2006, pp. 206-13.
Calhôa CF, Soares AM, Mann RM. Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus--is trophic transfer important? Sci Total Environ. 2006;371(1-3):206-13.
Calhôa, C. F., Soares, A. M., & Mann, R. M. (2006). Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus--is trophic transfer important? The Science of the Total Environment, 371(1-3), 206-13.
Calhôa CF, Soares AM, Mann RM. Cadmium Assimilation in the Terrestrial Isopod, Porcellio Dilatatus--is Trophic Transfer Important. Sci Total Environ. 2006 Dec 1;371(1-3):206-13. PubMed PMID: 17055036.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium assimilation in the terrestrial isopod, Porcellio dilatatus--is trophic transfer important? AU - Calhôa,Carla Filipa, AU - Soares,Amadeu M V M, AU - Mann,Reinier M, Y1 - 2006/10/18/ PY - 2006/06/19/received PY - 2006/09/12/revised PY - 2006/09/12/accepted PY - 2006/10/24/pubmed PY - 2007/1/11/medline PY - 2006/10/24/entrez SP - 206 EP - 13 JF - The Science of the total environment JO - Sci Total Environ VL - 371 IS - 1-3 N2 - 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(NO(3))(2) or lettuce grown hydroponically in growth media containing 100 microM Cd(NO(3))(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. SN - 0048-9697 UR - https://www.unboundmedicine.com/medline/citation/17055036/Cadmium_assimilation_in_the_terrestrial_isopod_Porcellio_dilatatus__is_trophic_transfer_important L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(06)00719-4 DB - PRIME DP - Unbound Medicine ER -