Species Regional Summary
Botryllus schlosseri
Humboldt Bay ( P130 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Reocrd: CA/Humboldt Bay ("present for at least 30 years", Boyd et al. 2002)

Geographic Extent

CA/Humboldt Bay ("present for at least 30 years", Boyd et al. 2002; 2000, Ruiz et al., unpublished data); Woodley Island Marina/CA/Humboldt Bay (2001, Fairey et al. 2002); Woodley Island Marina/CA/Humboldt Bay (Nelson 2009)

Vectors

Level Vector
Alternate Hull Fouling
Alternate Oyster Accidental
Alternate Oyster Accidental
Alternate None

Regional Impacts

Ecological ImpactCompetition
In fouling plate experiments in Humboldt Bay, Nelson (2009) found that colonial tunicates (Botryllus schlosseri and Botrylloides violaceus), growing in sheets, were able to quickly occupy space on fouling plates, but did not decrease recruitment or species richness.
 

References

Full Reference List for Botryllus schlosseri

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