Expert Report

Each report is produced by a committee of experts selected by the Academy to address a particular statement of task and is subject to a rigorous, independent peer review; while the reports represent views of the committee, they also are endorsed by the Academy. Learn more on our expert consensus reports.

The Virginia Seafood Council has introduced a proposal to establish triploid C. ariakensis (nonnative oysters) into the Chesapeake Bay. Although triploid oysters are generally sterile, hence reducing the likelihood that these oysters will spawn, a small percentage (0.09 percent) will be diploid, or may revert to the diploid condition. The National Academies' committee reviewed the proposal and was concerned that it did not contain sufficient safeguards to reduce the risk of introducing a reproductive population of nonnative oysters into the waters of Virginia and neighboring states. This letter identifies several specific risks and concerns and recommends that the Virginia Marine Resources Commission amend the Virginia Seafood Council proposal to include additional safeguards.