SANDUSKY, Ohio (AP) - The U.S. Fish and Wildlife Service has begun a six-week mission to restock trout in Lake Erie and Lake Ontario.

The agency says 200,000 trout yearlings will be released into the lakes through late May.

The restocking began last week in Lake Erie off Sandusky and Fairport Harbor then headed to stops off Erie, Pa., and Dunkirk, N.Y.

The Lake Ontario restocking will follow in mid-May.

The yearlings are the first raised in the Allegheny National Fish Hatchery in Warren, Pa., since an incurable fish virus was detected there in 2005.

The hatchery was decontaminated and received trout brood stock and eggs from other hatcheries.