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Marine Ecology Progress Series

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MEPS 165:119-126 (1998)  -  doi:10.3354/meps165119

Invasion of Hawaiian shores by an Atlantic barnacle

A. J. Southward1,*, R. S. Burton2, S. L. Coles3, P. R. Dando4, R. DeFelice3, J. Hoover5, P. E. Parnell6, T. Yamaguchi7, W. A. Newman2

1Department of Biology, University of Victoria, Victoria, British Columbia V8W 2Y2, Canada 2Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0202, USA 3Department of Natural Sciences, B. P. Bishop Museum, Honolulu, Hawaii 96817, USA 4School of Ocean Science, University of Wales Bangor, Menai Bridge, Anglesey LL59 5EY, United Kingdom
5Hawaii Medical Library, 1221 Punchbowl Street, Honolulu, Hawaii 96813, USA
6Oceanography Department, University of Hawaii, 1000 Pope Road, Honolulu, Hawaii 96822, USA
7Department of Earth Sciences, Chiba University, Yoyoi-cho, Inage, Chiba 263, Japan
*Address for correspondence: Marine Biological Association, Citadel Hill, Plymouth PL1 2PB, United Kingdom. E-mail:

A largely vacant niche in the upper mid-littoral zone of sheltered Hawaiian shores is now occupied by Chthamalus proteus Dando & Southward, 1980 (Crustacea, Cirripedia), otherwise found in the Caribbean, the Gulf of Mexico and Brazil. The identity of the species was established by morphological details and confirmed by allozyme electrophoresis. Previously, chthamaline barnacles have rarely been found fouling hulls of ships; this is the first recorded instance of regular occurrence on ships as well as of remote dispersal in the genus. While the introduction of C. proteus apparently has had little impact so far, there is a need to step up monitoring programs so as to prevent rather than simply detect future introductions.

Chthamalus proteus · Remote dispersal · Introduced species · Fouling · Enzyme electrophoresis · Setal characters

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