Argulus sp. (Crustacea: Branchiura) on cod, Gadus morhua from Finnmark, northern Norway

• Published in: Journal of the Marine Biological Association of the United Kingdom
• Main Authors: Schram, T.A., Iversen, L., Heuch, P.A., Sterud, E.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 2005
• Subjects: Aquatic Science; Norway; Finnmark; Gadus morhua; Northern Norway
• Online Access: http://dx.doi.org/10.1017/s0025315405010866h; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315405010866

Six specimens of an unknown Argulus species were found on a cod caught off the coast of Finnmark in northern Norway. All six were found to be sixth stage male larvae, ∼2·6 mm long and 1·6 mm wide. Argulus has not previously been recorded from cod and this is also the first record of a marine Argulus from Norwegian waters. The Argulus sp. from cod can be easily distinguished from other marine species found in northern European waters, and also from Norwegian freshwater species of Argulus . It is believed that it represents a new species, but a complete species description must await the finding of adult stages.