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Oysters (Crassostrea virginica) were transplanted from the pristine Rappahannock River estuary, to the industrialized Elizabeth River estuary. In addition, oysters taken from the Elizabeth River were transplanted to another site within the river. The accumulation of PAHs in both sets was monitored over a period of 9 weeks. Accumulation of PAHs was rapid with approximate equilibrium in 2 to 4 weeks...
Adults oysters (Crassostrea virginica) were exposed to TBT at concentrations of 0 (control), 50, 100, 500, and 1000 ng/l for 8 weeks, Initially of indeterminate sex, all were sexually mature after 2 weeks at 25°C at all TBT concentrations and remained mature throughout the study. Gametes obtained by stripping were mature and generally fertilizable when crossed with gametes from a reference population...
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