Non-Native Oysters

As part of its mission to provide objective scientific advice to regulatory and management agencies, researchers at the Virginia Institute of Marine Science played a central role in the multi-year, multi-institutional effort to evaluate the potential use of  non-native oysters in Chesapeake Bay. VIMS research focused on both native and non-native species, with a clear distinction between evaluation of two separate goals—restoration for ecological purposes and restoration and maintenance of a commercially viable fishery.

Although policymakers ultimately decided against the introduction of non-native oysters for restoration or aquaculture, the evaluation process led to a discovery that has revolutionized aquaculture of native oysters in the Bay: the use of spawnless triploid oysters, animals that can be harvested in summer and whose rapid growth helps outpace disease.

VIMS began evaluating non-native oysters in 1995, when the Virginia General Assembly charged us with developing a strategic plan for shellfish research, including testing of non-native species.
Oyster grower
Non-Native Oyster Timeline
A synopsis of significant milestones in the evaluation of non-native oysters in Chesapeake Bay.
Oyster tissue
Information Products
A one-stop shop for research findings, reports, web pages, and other information sources concerning non-native oyster research in the Chesapeake Bay region.