Abstract
Adult and fourth-stage larval nematodes found in the stomachs of farmed cod in North Norway in October 2006 were identified as Hysterothylacium cornutum (Stossich, 1904), a nematode considered to be specific at the adult stage to tunas of the genus Thunnus. As far as we are aware, this is the first report of an adult form of this nematode from any host other than members of the genus Thunnus, and is also the first report from a polar region. The two infected cod, one with one large adult worm and another with six larvae, were in a sample of 17 that had been captured from the wild about 1 year before sampling and held in floating sea cages in Øksfjord, Finnmark County, North Norway, where the examinations took place. No further infections were found in any other samples of wild and farmed cod, totalling 261 fish, examined by us during the period 2006 and 2007 from five locations distributed along the coast of Norway from Øksfjord in the north to Ålesund in the south. Possible sources of this unusual infection are discussed, but no firm conclusion could be reached.
References
Berland B (1961) Nematodes from some Norwegian marine fishes. Sarsia 2:1–50
Berland B (1991) Hysterothylacium aduncum (Nematoda) in fish. Int Counc Explor Sea Leaflet No. 44:1–4
Bruce NL, Cannon LRG (1989) Hysterothylacium, Iheringascaris and Maricostula new genus, nematodes (Ascaridoidea) from Australian pelagic marine fishes. J Nat Hist 23:1397–1441. doi:10.1080/00222938900770771
Deardorff TL, Overstreet RM (1981) Larval Hysterothylacium (=Thynnascaris) (Nematoda: Anisakidae) from fishes and invertebrates in the Gulf of Mexico. Proc Helminth Soc Wash 48:113–126
Deardorff TL, Overstreet RM (1982) Hysterothylacium pelagicum sp. n., H. cornutum (Stossich, 1904) (Nematoda: Anisakidae) from marine fishes. Proc Helminth Soc Wash 49:246–251
Johnston TH, Mawson PM (1943) Some ascarid nematodes from Australian marine fish. Trans R Soc S Aust 67:20–35
Johnston TH, Mawson PM (1945) Parasitic nematodes. BANZ Ant Res Exp B Adel 5:73–160
Johnston TH, Mawson PM (1951) Additional nematodes from Australian fish. Trans R Soc S Aust 74:18–24
Kent ML (2000) Marine netpen farming leads to infections with some unusual parasites. Int J Parasitol 30:321–326. doi:10.1016/S0020-7519(00)00018-7
MacKenzie K, Hemmingsen W (2003) Potential disease problems due to parasites in species of marine fish new to mariculture. J Parasitol 89(Suppl.):S263–S270
Muus BJ, Nielsen JG, Dahlstrøm P, Nystrøm BO (1999) Sea fish. Scandinavian fishing year book, Baekgaardsvej 1, Hedehusene, Denmark, 340 pp
Obiekiezie AI, Lick R, Kerstan S, Møller H (1992) Larval nematodes in stomach wall granulomas of smelt Osmerus eperlanus from the German North Sea coast. Dis Aquat Organ 12:177–183. doi:10.3354/dao012177
Petter A (1969) Enquête sur les Nématodes des Poissons de la région nantaise. Ann Parasitol Hum Comp (Paris) 44:559–580
Williams EH Jr, Williams LB (1996) Parasites of offshore big game fishes of Puerto Rico and the Western Atlantic. Puerto Rico Department of Natural and Environmental Resources, San Juan, PR, and the University of Puerto Rico, Mayaguez, PR, 382 pp
Acknowledgments
The CODPAR project in the course of which these findings were made was funded jointly by the Norwegian Research Council and Innovation Norway. Cod for examination and laboratory facilities at Øksfjord were provided by staff of Ultra Seafood Loppa, for which we thank them.
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MacKenzie, K., Hemmingsen, W., Jansen, P.A. et al. Occurrence of the tuna nematode Hysterothylacium cornutum (Stossich, 1904) in farmed Atlantic cod Gadus morhua L. in North Norway. Polar Biol 32, 1087–1089 (2009). https://doi.org/10.1007/s00300-009-0642-1
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DOI: https://doi.org/10.1007/s00300-009-0642-1