New York Natural Heritage Program
Eastern Pearlshell
Margaritifera margaritifera (Linnaeus, 1758)

New York State Distribution [-]
New York forms the southwestern extent of this species' range. Within the state, its distribution is poorly known, but it may be rather widespread along the margins of the Adirondacks. At present, scattered populations are known from the Boquet and Salmon Rivers south of Plattsburgh, tributaries of Oneida Lake, the Upper Delaware River, and the Hackensack River (Strayer and Jirka 1997).

Global Distribution [-]
The Eastern Pearlshell has a Holarctic distribution, occurring in northern Europe, eastern North America, and Eurasia. In North America it is distributed from Newfoundland and Labrador south to Pennsylvania. The eastern pearlshell is widespread in New England and the Canadian Maritime Provinces (Clarke 1981). Strayer (1987) hypothesized that the distribution of this species may be explained by its movement between drainages, and even continents, by anadromous ocean-going Salmonids, although it not known whether glochidia could survive such conditions.
Best Places to See
• Salmon River (Clinton County)