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photo by Dann Blackwood (USGS)


Nancy C. Balcom, University of Conneticut

Botrylloides violaceus  

Common Name: an orange sheath tunicate

Taxonomy: available through ITIS logo

Identification: Colonial.  Thin, rubbery crust.  Usually orange, but variable.  Individuals arranged in twisting rows, more than 1/16" (2mm) long, 1/64" (0.5mm) wide (Meinkoth 1981).

Size: 1/8

US auto-generated map
Alaska auto-generated map
Alaska
Hawaii auto-generated map
Hawaii
Caribbean auto-generated map
Caribbean

Interactive maps: Continental US, Alaska, Hawaii, Caribbean

Nonindigenous Occurrences: Populations are established in Prince William Sound, Alaska (Ruiz 2000); San Francisco Bay, California (Ruiz 2000); Long Island Sound, Connecticut (Balabam 2001); coastal areas of Maine (Balabam 2001); Long Island Sound, New York (Balabam 2001); Coos Bay, Oregon (Ruiz 2000); Puget Sound, Washington (Cohen 2004).

Ecology: Found on rocks, pilings, floats, and other substrates in bays and harbors; near low-tide line and below (Meinkoth 1981).

Means of Introduction: Shipping.

Status: Established.

Impact of Introduction:

Remarks:

References

Author: Pam Fuller

Revision Date: 2/19/2009

Citation for this information:
Pam Fuller. 2010. Botrylloides violaceus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=2418> Revision Date: 2/19/2009





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