Bioaccumulation of cadmium in marine organisms
The physiological and biochemical processes that control cellular cadmium concentrations and the effects of environmental parameters, such as salinity and temperature, on these processes are discussed. The uptake of cadmium by the American oyster is described. Significant bioaccumulation of cadmium occurs in the American oyster at concentrations as low as 0.005 ppm. Factors that affect cadmium concentrations in oyster tissue include the geographic location of the oysters, seasonal temperature differences, and salinity dependence. The existence of an inducible cadmium-binding protein similar to metallothionein is reported as a mechanism for cadmium accumulation in oysters. (7 graphs, 14 references, 5 tables)
- Research Organization:
- Johns Hopkins Univ
- OSTI ID:
- 5566232
- Journal Information:
- Environ. Health Perspect.; (United States), Vol. 28
- Country of Publication:
- United States
- Language:
- English
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