Invasion

Invasion Description

1st Established Records: Lynnhaven, Virginia Beach/VA/Lynnhaven Bay (2002, Ruiz et al., unpublished data) 1st Record, Type Locality: Philadelphia/PA/Delaware River (1823) (Van Name 1945) This specimen, taken from the hull of a ship, was probably dead or moribund. Its orgin is unknown.

Geographic Extent

Mystic/CT/Mystic River, Long Island Sound (10/26/2001, established Carlton, personal communication, 2023*); Chincoteague Island/VA/Chincoteague Bay (1999, O'Beirn and Luckenbach 2004, on oyster-culture floats); Lynnhaven, Virginia Beach/VA/Lynnhaven Bay (2002, Ruiz et al., unpublished data) 

*Thousands of individuals ranging from juveniles to adults were found attached to many different substrates in the Mystic River Estuary in Mystic, Connecticut. The population is being monitored to determine if it has survived the winter of 2022-2023.