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Occurrence of the alien ascidian Perophora japonica at Plymouth

Published online by Cambridge University Press:  31 October 2000

Teruaki Nishikawa
Affiliation:
Nagoya University Museum, Chikusa-ku, Nagoya 464-8601, Japan
John D.D. Bishop
Affiliation:
Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, PL1 2PB, UK
A. Dorothea Sommerfeldt
Affiliation:
Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, PL1 2PB, UK

Abstract

Several colonies of the phlebobranch ascidian Perophora japonica were found during 1999 at a marina in Plymouth Sound, Devon, UK. The species was still present in the spring of 2000. This appears to be the first record from British coasts of the species, which is native to Japan and Korea but is previously known from northern France. The stolons of P. japonica bear distinctive, star-shaped terminal buds, which are bright yellow in the Plymouth population. Comparison is made with Atlantic representatives of the genus, particularly the native British species P. listeri.

Type
Brief Report
Copyright
2000 Marine Biological Association of the United Kingdom

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