Depuration of Twelve Trace Metals in Tissues of the Oysters Crassostrea gigas and C. virginica
Okazaki RK and Panietz MH. 1981. Depuration of Twelve Trace Metals in Tissues of the Oysters Crassostrea gigas and C. virginica. Marine Biology. 63(2):113-120
The depuration of 12 trace metals in the mantle, gill, digestive gland, and kidney of C. gigas and C. virginica was investigated under natural field conditions; oysters from a relatively contaminated environment (Redwood Creek in south San Francisco Bay) were transplanted to a relatively clean environment (Tomales Bay). In the transplanted oysters, the digestive gland and kidney depurated Cd, Cu, Hg, Ag, and Zn more readily than the mantle and gill. Other trace metals As, Fe, Mn, Ni and Se showed varying depuration patterns. The results for Cr and Pb were inconclusive, since initial concentrations were too low to follow any losses. Interspecific differences in trace metal depuration were observed. Biological half-lives for most trace metals were on the order of 23 to 60 d for C. gigas and on the order of 70 to 180 d for C. virginica.
- Type
- Journal Article
- Authors
- Okazaki, R; Panietz, M
- Units
- PORE
- Keywords
- Crassostrea gigas, Crassostrea virginica, depuration, Pollution Effects, Trace Metals