Flux of Cadmium through a Laboratory Food Chain (Media – Algae – Mussel) and Its Effects

Hennig, H.; Orren, M. J.

doi:10.2166/wst.1982.0203

“…Other studies concluded that uptake of particulate Cd contributed < 10% of the total Cd body burden in mussels [30,32]. Hennig [33] studied the consequences of feeding behavior on M. edulis but did not find any relationship between food concentration and accumulation rate of cadmium. In contrast, Phillips [34] and Zaroogian [35], working with M. edulis , reported that an increase of food availability increased the trophic contamination of metal and the accumulation rate.…”

Section: Discussionmentioning

confidence: 99%

Relationship between feeding‐induced ventilatory activity and bioaccumulation of dissolved and algal‐bound cadmium in the Asiatic clam Corbicula fluminea

Tran

¹

,

Boudou

²

,

Massabuau

³

2002

Enviro Toxic and Chemistry

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The influence of feeding-induced ventilatory adaptation on cadmium accumulation patterns was analyzed in quiescent Asiatic clam Corbicula fluminea studied in steady-state conditions at 15 degrees C and 25 degrees C and in air-equilibrated water. Ventilatory activity, algae inflow rate, amounts of inspired dissolved and algae-bound Cd, and whole-body and tissue-specific metal concentrations were studied during a 15-d exposure period at a low dissolved cadmium concentration of 2 microg/L and various algal concentrations of Scenedesmus subspicatus. Great care was taken not to externally stimulate animals. Four main results were obtained as regard to regulation of ventilatory activity and metal accumulation rate. First, at 25 degrees C, feeding purposes strongly stimulated ventilatory activity, while at 15 degrees C, it was independent of it except at 1 to 2 x 10(5) algae/ml. Second, Cd accumulation rate increased at higher temperature. Third, accumulation rate exhibited a positive correlation with the ventilatory flow rate. Fourth, no correlation was observed with the quantity of ventilated algae-bound Cd but, rather, with the quantity of ventilated dissolved Cd. It is concluded that the physiology of the animals can be fundamental in affecting metal accumulation process.

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“…Other studies concluded that uptake of particulate Cd contributed Ͻ10% of the total Cd body burden in mussels [30,32]. Hennig [33] studied the consequences of feeding behavior on M. edulis but did not find any relationship between food concentration and accumulation rate of cadmium. In contrast, Phillips [34] and Zaroogian [35], working with M. edulis, reported that an increase of food availability increased the trophic contamination of metal and the accumulation rate.…”

Section: Comparison With Previous Data In the Literaturementioning

confidence: 97%

Relationship Between Feeding-Induced Ventilatory Activity and Bioaccumulation of Dissolved and Algal-Bound Cadmium in the Asiatic Clam Corbicula Fluminea

Tran¹,

Boudou²,

Massabuau³

2002

Environ Toxicol Chem

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The influence of feeding-induced ventilatory adaptation on cadmium accumulation patterns was analyzed in quiescent Asiatic clam Corbicula fluminea studied in steady-state conditions at 15 degrees C and 25 degrees C and in air-equilibrated water. Ventilatory activity, algae inflow rate, amounts of inspired dissolved and algae-bound Cd, and whole-body and tissue-specific metal concentrations were studied during a 15-d exposure period at a low dissolved cadmium concentration of 2 microg/L and various algal concentrations of Scenedesmus subspicatus. Great care was taken not to externally stimulate animals. Four main results were obtained as regard to regulation of ventilatory activity and metal accumulation rate. First, at 25 degrees C, feeding purposes strongly stimulated ventilatory activity, while at 15 degrees C, it was independent of it except at 1 to 2 x 10(5) algae/ml. Second, Cd accumulation rate increased at higher temperature. Third, accumulation rate exhibited a positive correlation with the ventilatory flow rate. Fourth, no correlation was observed with the quantity of ventilated algae-bound Cd but, rather, with the quantity of ventilated dissolved Cd. It is concluded that the physiology of the animals can be fundamental in affecting metal accumulation process.

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“…What has been overlooked is the unique opportunity that MTs afford to reformulate the criteria for metal pollution. The detoxification effect of MT in animals from polluted areas has been mentioned (8)(9)(10)(11), but only three studies relating metal-binding proteins to pollution have been published (12)(13)(14). This lack is partly due to the design of most experiments which have been aimed at the isolation of proteins.…”

Section: Introductionmentioning

confidence: 99%

Metal-binding proteins as metal pollution indicators.

Hennig¹

1986

Environ Health Perspect

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The fact that metal-binding proteins are a consequence of elevated metal concentration in organisms is well known. What has been overlooked is that the presence of these proteins provides a unique opportunity to reformulate the criteria of metal pollution. The detoxification effect of metal-binding proteins in animals from polluted areas has been cited, but there have been only very few studies relating metal-binding proteins to pollution. This lack is due partly to the design of most experiments, which were aimed at isolation of metal-binding proteins and hence were of too short duration to allow for correlation to adverse physiological effects on the organism. In this study metal-binding proteins were isolated and characterized from five different marine animals (rock lobster, Jasus lalandii; hermit crab, Diogenes brevirostris; sandshrimp, Palaemon pacificus; black mussel, Choromytilus meridionalis; and limpet, Patella granularis). These animals were kept under identical metal-enriched conditions, hence eliminating differences in method and seasons. The study animals belonged to different phyla; varied in size, mass, age, behavior, food requirements and life stages; and accumulated metals at different rates. It is possible to link unseasonal moulting in crustacea, a known physiological effect due to a metal-enriched environment, to the production of the metal-binding protein without evidence of obvious metal body burden. Thus a new concept of pollution is defined: the presence of metal-binding proteins confirms toxic metal pollution. This concept was then tested under field conditions in the whelk Bullia digitalis and in metal-enriched grass.

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Flux of Cadmium through a Laboratory Food Chain (Media – Algae – Mussel) and Its Effects

Cited by 4 publications

References 64 publications

Relationship between feeding‐induced ventilatory activity and bioaccumulation of dissolved and algal‐bound cadmium in the Asiatic clam Corbicula fluminea

Relationship between feeding‐induced ventilatory activity and bioaccumulation of dissolved and algal‐bound cadmium in the Asiatic clam Corbicula fluminea

Relationship Between Feeding-Induced Ventilatory Activity and Bioaccumulation of Dissolved and Algal-Bound Cadmium in the Asiatic Clam Corbicula Fluminea

Metal-binding proteins as metal pollution indicators.

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