Marine Resources Commission; Chesapeake Bay; menhaden reduction fishing in the Chesapeake Bay prohibited. Directs the Marine Resources Commission to prohibit all fishing for the purse seine menhaden reduction sector in the Chesapeake Bay and its tributaries until a determination has been made that research specific to the Chesapeake Bay has demonstrated that the menhaden reduction fishery does not negatively impact other fisheries or menhaden-dependent species. Such determination shall be made by the Secretary of Natural and Historic Resources and certified in writing to the Virginia Code Commission.