Species Regional Summary
Styela clava
Newport Bay ( P040 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Record: Newport Beach/CA/Newport Harbor (1933, Carlton 1979; Lambert and Lambert 1998; Cohen et al. 2002; Lambert and Lambert 2003)

Geographic Extent

Newport Beach/CA/Newport Harbor (1933, Carlton 1979; Lambert and Lambert 1998; Cohen et al. 2002; Fairey et al. 2002; Lambert and Lambert 2003; 2011, California Department of Fish and Wildlife 2014; 2017, Ruiz and Geller 2021, 2 of 10 sites sampled; 2018, Beshai et al. 2022)

Vectors

Level Vector
Probable None

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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