Species Regional Summary
Victorella pavida
Chesapeake Bay ( M130 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st record: off James Island/MD/Middle Chesapeake Bay (1920, Cowles 1930; Osburn 1932)

Geographic Extent

off Cape Charles City/VA/Lower Chesapeake Bay (1920, Cowles 1930; Osburn 1932); off New Point Comfort/VA/Lower Chesapeake Bay (1920, Cowles 1930; Osburn 1932); off Tangier Island/VA/Lower Chesapeake Bay (1920, Cowles 1930; Osburn 1932); James Island/MD/Middle Chesapeake Bay (1916, Cowles 1930; Osburn 1932); Surry Power Station (Hog Island)/VA/James River (Thompson 1993); Calvert Cliffs Nuclear Power Plant/MD/Middle Chesapeake Bay (Abbe 1987); Norfolk Naval Base/VA/Hampton Roads (Calder 1966); Gloucester Point/VA/York River (Ruiz et al. unpublished); MD/Patuxent River (Chalk Point to Solomons) (Cory 1967); below Little Falls, Washington/DC/Potomac River (Banta and Backus 1991); Anne Arundel County/MD/Rhode River (Ruiz et al., unpublished data); Baltimore County/MD/Gunpowder River estuary (Ruiz et al., unpublished data)

Vectors

Level Vector
Probable Hull Fouling

Regional Impacts

Ecological ImpactCompetition
Victorella pavida (s. l.) is one of the dominant fouling organisms in summer in Chesapeake Bay (Osburn 1944; Cory 1967; Lippson and Lippson 1984;  Abbe 1987) and is s presumed to compete with other fouling taxa for space in mesohaline fouling communities, including native barnacles and the introduced hydroids Cordylophora caspia and introduced Garveia franciscana, which are also frequently dominant in fouling communities (Cory 1967; Nauman and Cory 1969; Abbe 1987; Ruiz et al. unpublished data).
 
Ecological ImpactHabitat Change
Victorella pavida (s. l.) colonies provide habitat for a wide variety of small motile animals (amphipods, polychaetes, etc.) in Chesapeake Bay (Ruiz et al. unpublished observations).
 
Economic ImpactIndustry
Victorella pavida (s. l.) is an important fouling organism in power plants and other industrial users of estuarine waters in the Patuxent River, Chesapeake Bay (Nauman and Cory 1969).
 
Economic ImpactShipping/Boating
Boating - Victorella pavida (s. l.) is 'a nuisance fouling the bottom of boats' in Chesapeake Bay (Osburn 1944; Lippson and Lippson 1984).
 

References

Full Reference List for Victorella pavida

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