Effect of seasonally changing tissue weight on trace metal concentrations in the bivalve Macoma balthica in San Francisco Bay

Cain, Daniel J.; Luoma, Samuel N.

doi:10.3354/meps028209

Cited by 48 publications

(17 citation statements)

References 20 publications

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“…We examine two mollusk species present in appreciable numbers at both sites that calcify year round and inhabit the same intertidal zone, though different environments within the intertidal (see Cain and Luoma, 1986;Goering et al, 1990;Hylleberg and Gallucci, 1975;Klein et al, 1996;Mallet and Carver, 1995;McDonald and Koehn, 1988). These include a clam (Macoma spp.)…”

Section: Methodsmentioning

confidence: 99%

Stable isotope reconstructions of shellfish harvesting seasonality in an estuarine environment: implications for Late Holocene San Francisco Bay settlement patterns

Eerkens¹,

Byrd²,

Spero³

et al. 2013

Journal of Archaeological Science

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Section: Methodsmentioning

confidence: 99%

Stable isotope reconstructions of shellfish harvesting seasonality in an estuarine environment: implications for Late Holocene San Francisco Bay settlement patterns

Eerkens¹,

Byrd²,

Spero³

et al. 2013

Journal of Archaeological Science

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“…M. balthica is morphologically a deposit-feeding species which is capable of suspension-feeding. Various aspects of its feedi.ng ecology (Newel1 1965, Tunnicliffe & Risk 1977, Harvey & Luoma 1985 and accumulation of metals have been examined , Cain & Luoma 1986, Johns & Luoma 1990), but the role of digestive processing in uptake of metals has not been considered.…”

Section: Introductionmentioning

confidence: 99%

Time-courses in the retention of food material in the bivalves Potamocorbula amurensis and Macoma balthica significance to the absorption of carbon and chromium

Decho¹,

Luoma²

1991

Mar. Ecol. Prog. Ser.

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103

123

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Time courses for ingest~on, retention and release via feces of microbial food was investigated using 2 b~valves w~t h d~fferent feeding strategies, Potamocorbula amurensis and Macoma balthica. The results showed 2 pathways for the uptake of food material in these clams. The first is represented by an initlal label pulse in the feces. The second pathway operates over longer time periods. Inert "Cr-labeled beads were used to determine time frames for these pathways. The first pathway, involving extracellular digestion and intestinal uptake, is relatively inefficient In the digestion of bacter~al cells by P amurensis but more efficient in M. balthica. The second pathway, involving intracellular digestion withln the digestive gland of both clams, was highly efficient in absorb~ng bacterial carbon, and was responsible for most chromium uptake. Differences in the overall retention of microbial "Cr and I4C relate not to gut-passage times but to the processing and release strategies of the food material by these 2 clams.

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“…Bioaccumulated metal concentrations are known to vary with animal size (Boyden 1974, Cain & Luoma 1986, as does subcellular metal partitioning (Mouneyrac et al 2000, Wallace et al 2003. TAM may therefore also be sizedependent.…”

Section: Size-dependence and Field Estimates Of Tammentioning

confidence: 99%

Subcellular compartmentalization of Cd and Zn in two bivalves. II. Significance of trophically available metal (TAM)

Wallace¹,

Luoma²

2003

Mar. Ecol. Prog. Ser.

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271

174

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This paper examines how the subcellular partitioning of Cd and Zn in the bivalves Macoma balthica and Potamocorbula amurensis may affect the trophic transfer of metal to predators. Results show that the partitioning of metals to organelles, 'enzymes' and metallothioneins (MT) comprise a subcellular compartment containing trophically available metal (TAM; i.e. metal trophically available to predators), and that because this partitioning varies with species, animal size and metal, TAM is similarly influenced. Clams from San Francisco Bay, California, were exposed for 14 d to 3.5 µg l -1 Cd and 20.5 µg l -1 Zn, including 109Cd and 65 Zn as radiotracers, and were used in feeding experiments with grass shrimp Palaemon macrodatylus, or used to investigate the subcellular partitioning of metal. Grass shrimp fed Cd-contaminated P. amurensis absorbed ~60% of ingested Cd, which was in accordance with the partitioning of Cd to the bivalve's TAM compartment (i.e. Cd associated with organelles, 'enzymes' and MT); a similar relationship was found in previous studies with grass shrimp fed Cd-contaminated oligochaetes. Thus, TAM may be used as a tool to predict the trophic transfer of at least Cd. Subcellular fractionation revealed that ~34% of both the Cd and Zn accumulated by M. balthica was associated with TAM, while partitioning to TAM in P. amurensis was metal-dependent (~60% for TAM-Cd%, ~73% for TAM-Zn%). The greater TAM-Cd% of P. amurensis than M. balthica is due to preferential binding of Cd to MT and 'enzymes', while enhanced TAMZn% of P. amurensis results from a greater binding of Zn to organelles. TAM for most species-metal combinations was size-dependent, decreasing with increased clam size. Based on field data, it is estimated that of the 2 bivalves, P. amurensis poses the greater threat of Cd exposure to predators because of higher tissue concentrations and greater partitioning as TAM; exposure of Zn to predators would be similar between these species.

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Effect of seasonally changing tissue weight on trace metal concentrations in the bivalve Macoma balthica in San Francisco Bay

Cited by 48 publications

References 20 publications

Stable isotope reconstructions of shellfish harvesting seasonality in an estuarine environment: implications for Late Holocene San Francisco Bay settlement patterns

Stable isotope reconstructions of shellfish harvesting seasonality in an estuarine environment: implications for Late Holocene San Francisco Bay settlement patterns

Time-courses in the retention of food material in the bivalves Potamocorbula amurensis and Macoma balthica significance to the absorption of carbon and chromium

Subcellular compartmentalization of Cd and Zn in two bivalves. II. Significance of trophically available metal (TAM)

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