New York Natural Heritage Program
Eastern Pondmussel
Ligumia nasuta (Say, 1817)
Bivalves
Fred Schueler
Family: Unionid Mussels (Unionidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S2S3
A State Rarity Rank of S2S3 means: Imperiled or Vulnerable in New York - Very vulnerable to disappearing from New York, or vulnerable to becoming imperiled in New York, due to rarity or other factors; typically 6 to 80 populations or locations in New York, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
Because of its relatively thin shell, this species has suffered greatly from the zebra mussel (Dreissena polymorpha) invasion (Strayer and Jirka 1997).

State Ranking Justification [-]
This species has been heavily impacted by the zebra mussel invasion in the St. Lawrence River basin, Hudson River estuary, lower Great Lakes and elsewhere throughout the state (Strayer and Jirka 1997).

Short-term Trends [-]

Long-term Trends [-]