Invasion

Invasion Description

Record: Trenton/NJ/Delaware River (1873, Abbot 1977)

Geographic Extent

Micropterus dolomieuuwas present in the Delaware estuary at Trenton NJ by 1873 (Abbot 1877), probably introduced by private stockings, or perhaps through canals from the Hudson. There were also numerous stockings, including one in the Delaware River, PA (405 fish) (Bean 1893), and in Brandywine Creek, DE, in 1888 and 1903 (Raasch and Altemus 1991). These bass are now resident in the Delaware estuary (Horwitz 1986; Raasch and Altemus 1991). Weisberg et al. (1996) collected them only in the upper estuary, from Philadelphia to Trenton.