Mussels and mahogany quahogs harvested or wet-stored in the Jonesport area and clams harvested from Cranberry Point in Corea to Cow Point in Roque Bluffs. The recalled shellfish were harvested from Sept. 25 through Sept. 30.

They have tested positive for a marine neurotoxin that has been known to cause brain damage. The State Department of Marine Resources tested some mussel and clam samples and advised shellfish dealers to dispose of affected mussels.

This was the first time in Maine shellfish have tested above the threshold for the neurotoxin, which can build up after shellfish eat a certain kind of plankton.