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

Elvio D. Amato, Chamani P.M. Marasinghe Wadige, Anne M. Taylor, William A. Maher, Stuart L. Simpson, Dianne F. Jolley

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)862-871
Number of pages10
JournalEnvironmental Pollution
Volume243
Issue numberPt B
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Bioaccumulation
Bivalvia
Fresh Water
Toxicity
Sediments
Metals
Thin films
Fluxes
Biological Availability
Zinc
Cadmium
Lipid Peroxidation
Lipids
Membranes
Water

Cite this

Amato, Elvio D. ; Marasinghe Wadige, Chamani P.M. ; Taylor, Anne M. ; Maher, William A. ; Simpson, Stuart L. ; Jolley, Dianne F. / Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments. In: Environmental Pollution. 2018 ; Vol. 243, No. Pt B. pp. 862-871.
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Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments. / Amato, Elvio D.; Marasinghe Wadige, Chamani P.M.; Taylor, Anne M.; Maher, William A.; Simpson, Stuart L.; Jolley, Dianne F.

In: Environmental Pollution, Vol. 243, No. Pt B, 01.12.2018, p. 862-871.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Field and laboratory evaluation of DGT for predicting metal bioaccumulation and toxicity in the freshwater bivalve Hyridella australis exposed to contaminated sediments

AU - Amato, Elvio D.

AU - Marasinghe Wadige, Chamani P.M.

AU - Taylor, Anne M.

AU - Maher, William A.

AU - Simpson, Stuart L.

AU - Jolley, Dianne F.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - 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.

AB - 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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KW - Biomarkers

KW - Bivalves

KW - Metals

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KW - Water Pollutants, Chemical/analysis

KW - Biological Availability

KW - Environmental Monitoring/instrumentation

KW - Animals

KW - Metals/analysis

KW - Bivalvia/drug effects

KW - Fresh Water

KW - Geologic Sediments/chemistry

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EP - 871

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

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