Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments

Amato, ED; Marasinghe Wadige, CPM; Taylor, AM; Maher, WA; Simpson, SL; Jolley, DF

Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments

Amato, ED Marasinghe Wadige, CPM Taylor, AM Maher, WA Simpson, SL Jolley, DF

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Publication Type:: Journal Article
Citation:: Environmental Pollution, 2018, 243 pp. 862 - 871
Issue Date:: 2018-12-01

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Field	Value	Language
dc.contributor.author	Amato, ED	en_US
dc.contributor.author	Marasinghe Wadige, CPM	en_US
dc.contributor.author	Taylor, AM	en_US
dc.contributor.author	Maher, WA	en_US
dc.contributor.author	Simpson, SL	en_US
dc.contributor.author	Jolley, DF https://orcid.org/0000-0003-1028-1603	en_US
dc.date.available	2018-09-02	en_US
dc.date.issued	2018-12-01	en_US
dc.identifier.citation	Environmental Pollution, 2018, 243 pp. 862 - 871	en_US
dc.identifier.issn	0269-7491	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130352
dc.description.abstract	© 2018 Elsevier Ltd The diffusive gradients in thin films (DGT) technique has shown to be a useful tool for predicting metal bioavailability and toxicity in sediments, however, links between DGT measurements and biological responses have often relied on laboratory-based exposures and further field evaluations are required. In this study, DGT probes were deployed in metal-contaminated (Cd, Pb, Zn) sediments to evaluate relationships between bioaccumulation by the freshwater bivalve Hyridella australis and DGT-metal fluxes under both laboratory and field conditions. The DGT-metal flux measured across the sediment/water interface (±1 cm) was useful for predicting significant cadmium and zinc bioaccumulation, irrespective of the type of sediment and exposure. A greater DGT-Zn flux measured in the field was consistent with significantly higher zinc bioaccumulation, highlighting the importance of performing metal bioavailability assessments in situ. In addition, DGT fluxes were useful for predicting the potential risk of sub-lethal toxicity (i.e., lipid peroxidation and lysosomal membrane damage). Due to its ability to account for multiple metal exposures, DGT better predicted bioaccumulation and toxicity than particulate metal concentrations in sediments. These results provide further evidence supporting the applicability of the DGT technique as a monitoring tool for sediment quality assessment. DGT was useful for predicting bioaccumulation and sublethal toxicity to organisms exposed to metal contaminated sediments irrespective of type of sediment and exposure.	en_US
dc.relation.ispartof	Environmental Pollution	en_US
dc.relation.isbasedon	10.1016/j.envpol.2018.09.004	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Metals	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Fresh Water	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Biological Availability	en_US
dc.subject.mesh	Geologic Sediments	en_US
dc.subject.mesh	Bivalvia	en_US
dc.title	Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments	en_US
dc.type	Journal Article
utslib.citation.volume	243	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	243	en_US

Abstract:

© 2018 Elsevier Ltd The diffusive gradients in thin films (DGT) technique has shown to be a useful tool for predicting metal bioavailability and toxicity in sediments, however, links between DGT measurements and biological responses have often relied on laboratory-based exposures and further field evaluations are required. In this study, DGT probes were deployed in metal-contaminated (Cd, Pb, Zn) sediments to evaluate relationships between bioaccumulation by the freshwater bivalve Hyridella australis and DGT-metal fluxes under both laboratory and field conditions. The DGT-metal flux measured across the sediment/water interface (±1 cm) was useful for predicting significant cadmium and zinc bioaccumulation, irrespective of the type of sediment and exposure. A greater DGT-Zn flux measured in the field was consistent with significantly higher zinc bioaccumulation, highlighting the importance of performing metal bioavailability assessments in situ. In addition, DGT fluxes were useful for predicting the potential risk of sub-lethal toxicity (i.e., lipid peroxidation and lysosomal membrane damage). Due to its ability to account for multiple metal exposures, DGT better predicted bioaccumulation and toxicity than particulate metal concentrations in sediments. These results provide further evidence supporting the applicability of the DGT technique as a monitoring tool for sediment quality assessment. DGT was useful for predicting bioaccumulation and sublethal toxicity to organisms exposed to metal contaminated sediments irrespective of type of sediment and exposure.

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http://hdl.handle.net/10453/130352