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| NAS - Nonindigenous Aquatic Species |
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Common Name: a tunicate
Taxonomy: available through 
Nonindigenous Occurrences: First discovered in Long Beach, California, in 1985 (Lambert and Lambert 1995). It is now found from San Diego to Santa Barbara and San Francisco Bay (Lambert and Lambert 1995; Ruiz et al. 2000). This species is also established in Puget Sound, Washington (Ruiz et al. 2000; Cohen 2004).
Means of Introduction: Ballast water or ship fouling.
Status: Established in California. Seasonally abundant (Lambert and Lambert 1995).
Impact of Introduction: Unknown.
Remarks:
References
Lambert, G., and C.C. Lambert. 1995. Nonindigenous sea squirts in California Harbors. Aquatic Nuisance Species Digest 1(2):17,20.
Ruiz, G. M., P. W. Fofonoff, J. T. Carlton, M. J. Wonham, and A. H. Hines. 2000. Invasion of coastal marine communities in North America: Apparent patterns, processes, and biases. Annual Review of Ecological Systematics. 31: 481-531.
Other Resources: Photos - Tunicates of the West Coast of North America
Author: Pam Fuller
Revision Date: 4/24/2006 Citation for this information:
Pam Fuller. 2008. Ciona savignyi. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=1285> Revision Date: 4/24/2006
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