JPR Advance Access originally published online on October 19, 2005
Journal of Plankton Research 2005 27(12):1301-1306; doi:10.1093/plankt/fbi088
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SHORT COMMUNICATION |
First record of the calanoid copepod Acartia omorii (Copepoda: Calanoida: Acartiidae) in the southern bight of the North Sea
Ecosystem Complexity Research Group, Station Marine de Wimereux, CNRS UMR 8013 Elico, 28 Avenue Foch, 62930 Wimereux, France and School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
Corresponding Author: laurent.seuront{at}univ-lille1.fr
Received July 18, 2005; accepted in principle August 25, 2005; accepted for publication October 12, 2005; published online October 19, 2005
Communicating editor: K.J. Flynn
The occurrence of the calanoid copepod, Acartia omorii, is reported for the first time in the coastal waters of the Southern bight of the North Sea, off Calais harbour. Acartia omorii males and females were consistently found in four plankton samples. The collected specimens were compared with A. omorii individuals collected from the type locality (Tokyo Bay, Japan). The capture of A. omorii, a species native to Japanese coastal waters, is in agreement with the recent observation of the Japanese macroalgae Undaria pinnatifida within Calais harbor and the hypothesis of passive transport in ships ballast water.