Sources of dietary cadmium to the Pacific oyster Crassostrea gigas

Christie, Jeffery; Bendell, L.I.

doi:10.1016/j.marenvres.2009.04.008

Cited by 8 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Samples were dissected (guts were separated from the remaining soft tissues) with acid cleaned plastic knives, oven dried, and homogenized using a mortar and pestle. Details regarding sample collection and preparation of dried homogenized powders are provided by Kruzynski (2004) and Bendell and Feng (2009), and Christie and Bendell (2009).…”

Section: Samples and Collectionmentioning

confidence: 99%

Tracing cadmium, zinc and lead sources in bivalves from the coasts of western Canada and the USA using isotopes

Shiel

Weis

Orians

2012

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Section: Samples and Collectionmentioning

confidence: 99%

Tracing cadmium, zinc and lead sources in bivalves from the coasts of western Canada and the USA using isotopes

Shiel

Weis

Orians

2012

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…The default assumption made here is that the ingested particles are similar to the particles sampled in the water column. Indeed, the possible selection of particles for ingestion could not be assessed in the field, unless gut content analysis was applied (Christie and Bendell, 2009).…”

Section: Bioaccumulation Modellingmentioning

confidence: 99%

Bioavailability of particulate metal to zebra mussels: Biodynamic modelling shows that assimilation efficiencies are site-specific

Bourgeault¹,

Gourlay-Francé²,

Priadi

et al. 2011

Environmental Pollution

View full text Add to dashboard Cite

This study investigates the ability of the biodynamic model to predict the trophic bioaccumulation of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in a freshwater bivalve. Zebra mussels were transplanted to three sites along the Seine River (France) and collected monthly for 11 months. Measurements of the metal body burdens in mussels were compared with the predictions from the biodynamic model. The exchangeable fraction of metal particles did not account for the bioavailability of particulate metals, since it did not capture the differences between sites. The assimilation efficiency (AE) parameter is necessary to take into account biotic factors influencing particulate metal bioavailability. The biodynamic model, applied with AEs from the literature, overestimated the measured concentrations in zebra mussels, the extent of overestimation being site-specific. Therefore, an original methodology was proposed for in situ AE measurements for each site and metal.

show abstract

“…Oyster cultures are economically important in coastal areas. Oysters are filter-feeding bivalves that easily accumulate trace metals, especially cadmium (Baudrimont et al, 2005;Lekhi et al, 2008;Bendell and Feng, 2009;Christie and Bendell, 2009;Ng et al, 2010). Due to known human health effects (Bragigand et al, 2004;Cheng and Gobas, 2007;Copes et al, 2008;Widmeyer and Bendell-Young, 2008;Saratug et al, 2010), consumption of oysters has been limited to 5 mg g -1 dw in Europe (CE No.…”

Section: Introductionmentioning

confidence: 99%

Tracing cadmium contamination kinetics and pathways in oysters (Crassostrea gigas) by multiple stable Cd isotope spike experiments

Strady¹,

Schäfer²,

Baudrimont³

et al. 2011

Ecotoxicology and Environmental Safety

View full text Add to dashboard Cite

Laboratory experiments using stable Cd isotopes ((110)Cd and (112)Cd) were conducted to separately and simultaneously characterize Cd accumulation in different tissues of Pacific oysters (Crassostrea gigas) via the (i) trophic and (ii) direct pathways. For this, we exposed juvenile oysters to (110)Cd-spiked seawater ((110)Cd: 2 μg l(-1); constant level) and (112)Cd-spiked food (Thalassiossera weissflogii, (112)Cd: 2 μg l(-1) in 35×10(3) cells/oyster/L) in four experimental treatment groups, each containing 6 oysters, for 21 days with constant trophic feeding. These Cd contamination levels were ∼10 times lower than those typically used in experimental accumulation studies. Three oysters per treatment group were dissected every 7 days with separate sampling of the gills, digestive gland and the rest of the body. Metallothioneins were analysed in the digestive gland and gills. Cadmium concentrations and isotope ratios were measured in water (daily) and tissues (weekly) by GF-AAS and ICP-MS. The observed time-dependant evolution in Cd concentrations and (110)Cd/(114)Cd and (112)Cd/(114)Cd isotope ratios clearly revealed the bio-accumulation short-term kinetics and pathways of Cd contamination in the different tissues. Under the experimental conditions, significantly changed isotope ratios in gills and the digestive gland of oysters suggested rapid and efficient contamination by (110)Cd derived from direct exposure followed by internal Cd transfer between organs. Trophic contamination became measurable after 14 days of exposure corresponding to a trophic transfer rate of 1%. Constant metallothionein levels during the experiment suggested that the initially present metallothionein levels were sufficient to deal with the experimental Cd exposure.

show abstract

Sources of dietary cadmium to the Pacific oyster Crassostrea gigas

Cited by 8 publications

References 32 publications

Tracing cadmium, zinc and lead sources in bivalves from the coasts of western Canada and the USA using isotopes

Tracing cadmium, zinc and lead sources in bivalves from the coasts of western Canada and the USA using isotopes

Bioavailability of particulate metal to zebra mussels: Biodynamic modelling shows that assimilation efficiencies are site-specific

Tracing cadmium contamination kinetics and pathways in oysters (Crassostrea gigas) by multiple stable Cd isotope spike experiments

Contact Info

Product

Resources

About