Species Regional Summary
Styela clava
Pt. Conception to Southern Baja California ( NEP-VI )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st record: Newport Beach/CA/Newport Harbor (1933, MacGinitie and MacGinitie 1968, as S. barnhartiCarlton 1979; Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003)

Geographic Extent

Ensenada, Baja California/Mexico/Pacfic Ocean (Lambert and Lambert 2003); Shelter Island, Harbor Island, Fiddlers Cove, J St.; Point Loma, San Diego/CA/San Diego Bay (1972, Abbott and Johnson 1972; Carlton 1979); San Diego/CA/San Diego Bay (2000, Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014); San Diego/CA/Mission Bay (1971, Abbott and Johnson 1972; Carlton 1979); Quivera Basin, Dana Landing, South Shores Boat Ramp, Mission Bay Yacht Club; San Diego/CA/Mission Bay (Cohen et al. 2002; Lambert and Lambert 2003; (2012, Tracy and Reyns 2014); Dana Point Marina, San Diego/CA/Mission Bay (2003, de Rivera et al. 2005); San Diego/CA/Mission Bay (2000, Fairey et al. 2002; (2012, Tracy and Reyns 2014); Oceanside/CA/Oceanside Harbor (1994, Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003); Oceanside/CA/Oceanside Harbor (2000, Fairey et al. 2002); Dana Point/CA/Dana Point Harbor, Pacific Ocean (1994, Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003; 2011, California Department of Fish and Wildlife 2014); Newport Beach/CA/Newport Harbor (1933, Carlton 1979; Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003; Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014; Ruiz and Geller 2021, 2 of 10 sites sampled; 2018, Beshai et al. 2022)); Huntington Beach/CA/Huntington Harbor (2000, Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014; 2018, Beshai et al. 2022); Long Beach Marina/CA/Alamitos Bay (1971, Carlton 1979; Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003); Impound Marina, Long Beach/CA/Long Beach Harbor (1994, Lambert and Lambert 1998; Lambert and Lambert 2003); Long Beach/CA/Long Beach Harbor (2000, Fairey et al. 2002; 2017, Ruiz and Gelelr 2021, 1 of 10 sites); Watchorn Marina,Los Angeles/CA/ Los Angeles Harbor; (Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003; 2011, California Department of Fish and Wildlife 2014); Los Angeles/CA/Los Angeles Harbor 2000, Fairey et al. 2002); Redondo Beach/CA/King Harbor (Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003); Venice/CA/Marina del Rey (Lambert and Lambert 1998; Cohen et al. 2002; Fairey et al. 2002; Lambert and Lambert 2003; 2011, California Department of Fish and Wildlife 2014); Oxnard/CA/Port Hueneme (Lambert and Lambert 1998; Cohen et al. 2002; Fairey et al. 2002; Lambert and Lambert 2003); Oxnard/CA/Channel Islands Harbor (2001, Fairey et al. 2002; 2003, de Rivera et al. 2005a); Oxnard/CA/Port Hueneme (2011, California Department of Fish and Wildlife 2014); CA/Ventura Harbor (Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003); CA/Santa Barbara Harbor (Lambert and Lambert 1998; Fairey et al. 2002; Lambert and Lambert 2003; 2011, California Department of Fish and Wildlife 2014)

Vectors

Level Vector
Probable Hull Fouling

Regional Impacts

Ecological ImpactCompetition
Styela clava is abundant in Southern California harbors, often forming dense patches with 100% cover (Lambert and Lambert 1998; Lambert and Lambert 2003). It and other introduced ascidians have replaced the native species Pyura haustor and Ascidia ceratodes in southern California harbors (Lambert and Lambert 1998).
 

References

Full Reference List for Styela clava

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