The Asiatic clam, Corbicula fluminea (Mu??ller), has extended its range to include the tidal fresh-water portion of the Potomac River, Maryland. Though patchily distributed, the clams have attained densities of 665 m-2. Size-class distributions indicate that the clams first appeared in 1975. About 90% of the population belong to year-class I and were less than 12 mm in length. Elsewhere, this species has created severe water quality problems; it should be closely watched in the Potomac. ?? 1980 Estuarine Research Federation.
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The asiatic clam, Corbicula fluminea (Mu??ller), in the tidal Potomac River, Maryland