Long-term trends in accumulated metals (Cd, Cu and Zn) and metallothionein in bivalves from lakes within a smelter-impacted region

Perceval, Olivier; Couillard, Yves; Pinel‐Alloul, Bernadette; Bonneris, Emmanuelle; Campbell, Peter G. C.

doi:10.1016/j.scitotenv.2006.04.019

Cited by 41 publications

(16 citation statements)

References 37 publications

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“…Rubio et al 2000, Saavedra et al 2004, Perceval et al 2006, Peltier et al 2008. Some of the issues raised in the present study are also addressed by Soldati et al (2009), which discusses growth and shell chemistry of a subspecies of the bivalve used in the present study.…”

Section: Bivalve Growth and Ecologymentioning

confidence: 93%

Trace elements in bivalve shells from the Río Cruces, Chile

Risk

Burchell²,

Roo³

et al. 2010

Aquat. Biol.

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In May 1960, the largest recorded earthquake in the earth's history struck southern Chile, and lowered the course of the Río Cruces by approximately 2 m. This created a wetland, which was colonised by the waterweed Egeria densa and, subsequently, by large populations of the blacknecked swan, which fed on the weed. Reported catastrophic declines in the weed and swan populations in 2004 coincided with the opening of a large cellulose plant upstream, leading to popular and scientific condemnation of the plant. In 2008, samples of the freshwater bivalve Diplodon chilensis were retrieved from the bed of the Río Cruces at several locations downstream of the plant, and the growth patterns of the bivalves were studied in thin section. Trace element profiles of bivalves were determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP/MS). Some of the bivalves had ages of almost 50 yr, indicating that they colonised the drowned riverbed less than a decade after the earthquake. There were no growth recessions or abnormalities in the shells corresponding to 2004, the year the plant opened. Patterns of trace elements in the shells describe aspects of the evolution of the watershed, track annual cycles in rainfall and indicate patterns of soil erosion and/or sediment input. Sr, Ba and Mn have strong annual cyclicity; Ba and Mn are viewed as indicators of soil erosion. Peaks in Ba were large immediately after the earthquake, whereas Ba peaks in the last few decades were of much smaller amplitude. The changes in Ba patterns probably indicate changes in patterns of soil erosion: high erosion rates immediately after the earthquake, slowing as the basin fills. Cu appears as annual low-level peaks in abundance in about 1975, which continue to the present. This may be the result of spraying of fungicides in the watershed, which is heavily used by agriculture. Similarly

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Section: Bivalve Growth and Ecologymentioning

confidence: 93%

Trace elements in bivalve shells from the Río Cruces, Chile

Risk

Burchell²,

Roo³

et al. 2010

Aquat. Biol.

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“…These decreases presumably are due to lower atmospheric emissions from the local smelter (Croteau et al 2002;Perceval et al 2006). …”

Section: Lake-to-lake Variations In Metal Speciationmentioning

confidence: 99%

Determination of Free Cd, Cu and Zn Concentrations in Lake Waters by In Situ Diffusion Followed by Column Equilibration Ion-exchange

et al. 2009

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Combining in situ diffusion and column ion-exchange equilibration, we measured free metal ion concentrations (Cd, Cu and Zn) in water samples collected from the epilimnion of 14 lakes in the Rouyn-Noranda area (600 km north-west of Montreal, QC, Canada). Lakes were selected to represent a wide range of physico-chemical characteristics (hardness, pH, dissolved organic matter-DOM, degree of metal contamination), to determine the influence of these parameters on metal speciation. Total dissolved metal concentrations, as determined within the diffusion cells, varied over one to two orders of magnitude: [Cd] 0.19-2.9 nM; [Cu] 36-190 nM; [Zn] 7-2,800 nM. The proportion of total dissolved metal present as free Cd 2? and Zn 2? was relatively constant for the 14 selected lakes, despite the wide pH (4.5-8) and DOM (3-23 mg C/L) ranges, probably reflecting the inverse relationship observed between pH and DOM; this proportion did, however, vary with DOM and pH for Cu. Our experimental free metal ion concentrations were compared with those calculated with the thermodynamic models WHAM (Windermere Humic Aqueous Model VI) and ECOSAT 4.7 (incorporating the NICA-Donnan model). Measured and calculated values were in reasonable agreement for both Cd and Zn although measured values were generally slightly higher, i.e. less than one order of magnitude. For several lakes, measured free Cu concentrations were, however, much higher than the calculated values, suggesting that these models overestimate Cu complexation. The gap between measured and calculated free metal ion concentration becomes more important as the total metal concentration decreases and as pH increases.

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“…Biomarkers are regarded as early warning signals because the changes at molecular level occur at a threshold that is less toxic than the levels that can be detected by monitoring change in a species, population, or community. The induction of metallothioneins (MTs) as well as metallothioneinlike proteins (MTLPs) in aquatic organisms has been recognized as a potential biomarker of heavy metal toxicity and bioaccumulation (Berthet et al 2005;Amiard et al 2006;Perceval et al 2006;Monserrat et al 2007;Machreki-Ajmi et al 2008). Several studies suggest that MTs and MTLPs can be useful proxies for the toxicity assessment of metals in aquatic organisms before they experience sublethal and lethal damage (Pavicic et al 1987;Paek et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Use of metallothioneins as biomarkers for environmental quality assessment in the Gulf of Gabès (Tunisia)

Ladhar-Chaabouni

Machreki-Ajmi

Hamza-Chaffai

2011

Environ Monit Assess

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Detection and assessment of the impact of pollution on biological resources imply increasing research on early-warning markers such as metallothioneins (MTs) in metal exposure. In this paper, we have collated published information on the use of metallothioneins and metallothionein-like proteins (MTLPs) as biomarkers for environmental quality assessment in the Gulf of Gabès. In this area, some species of fish and bivalve were used as bioindicators of pollution. In these species, an induction of MTs/MTLPs by the essential metals such as Cu and Zn and the non-essential metals such as Cd was observed by different authors who suggest the potential use of these proteins as biomarkers. However, MT concentrations can be influenced by many biotic (sex, maturity stages, and tissues) and abiotic factors (temperature, salinity, and pH). This is essentially the case in field studies where many parameters can randomly affect MT levels, so the endogeneous regulation of MTs must be considered before using MTs as an indicator of heavy metal exposure. Moreover, the use of biomarker cannot be examined independently of the evaluation of techniques that enable its quantification. Therefore, the approach to the use of MTs/MTLP as biomarkers of exposure for an assessment of the physiological status of aquatic organisms is discussed in this paper.

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Long-term trends in accumulated metals (Cd, Cu and Zn) and metallothionein in bivalves from lakes within a smelter-impacted region

Cited by 41 publications

References 37 publications

Trace elements in bivalve shells from the Río Cruces, Chile

Trace elements in bivalve shells from the Río Cruces, Chile

Determination of Free Cd, Cu and Zn Concentrations in Lake Waters by In Situ Diffusion Followed by Column Equilibration Ion-exchange

Use of metallothioneins as biomarkers for environmental quality assessment in the Gulf of Gabès (Tunisia)

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