Abstract
From September to November in 1995 a total of 49 mature sea trout were caught and radio tagged in the estuary (Randers fjord) or at the river mouth of the River Gudenå in Eastern Jutland. The tagged trout were between 2 and 6 yr old with total body length of 56–85 cm. Twenty-five of the tagged trout ascended the river. They were tracked every third day, for up to six months, until death or descent. Great variation was found in migration pattern and duration of river residence. Some fish spawned and left the river, some died after spawning, while others died unspent. The sea trout preferred to stay on the southern side of the main river, and Males spent significantly more time of the freshwater stay in spawning tributaries than females. Most of the trout ascended the main spawning tributary, the River Lilleå, where none passed a weir, 2 km upstream the confluence, despite the presence of a fish ladder.
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References
Baras, E. & J. P. Philippart (eds.), 1996. Underwater Biotelemetry, Proceedings of the first Conference and workshop on Fish telemetry in Europe, University of Liège, Belgium: 101–105.
Berg, O. K. & M. Berg, 1989. The duration of sea and freshwater residence of the sea trout, Salmo trutta, from the Vardnes River in northern Norway. Env. Biol. Fish. 15: 23–32.
Craig, J. F. 1982. A note on growth and mortality of trout, Salmo trutta (L)., in afferent streams of Windermere. J. Fish. Biol. 20: 423–429.
Dieperink, C. 1992. Opvandring af ørred og laks i Gudenåen. IFFReport Nr. 7. Danish Institute freshwater fisheries research (in Danish).
Fleming, I. A, B. Jonsson, M. R. Gross & A. Lamberg, 1996. An experimental study of the reproductive behaviour and success of farmed and wild salmon (Salmo salar). J. Appl. Ecol. 33: 893–905.
Heggberget, T. G., 1989. The population structure and migration system of Atlantic salmon (Salmo salar). In the River Alta, North Norway. A summary of the studies 1981–86. Salmon migration and – distribution symposium (2: 1987: Proceedings of the salmonid migration and distribution). University of Washington, Seattle: 124–129.
Heggberget, T. G., 1988. Timing of spawning in Norwegian Atlantic salmon (Salmo salar). Can. J. Fish. aquat. Sci. 45: 845–849.
Heggberget, T. G., R. A. Lund, N. Ryman & G. Ståhl, 1986. Growth and genetic variation of Atlantic salmon (Salmo salar) from different sections of the River Alta, North Norway. Can. J. Fish. aquat. Sci. 43: 1828–1835.
Hovey, S. J., D. P. F. King, D. Thompson & A. Scott, 1989. Mithochondrial DNA and allozyme analysis of Atlantic salmon, Salmo salar L., in England and Wales. J. Fish Biol. 35 (Suppl. A): 253–260.
Koed, A. K., G. Rasmussen, G. Holdensgaard & C. Pedersen, 1996. Tangetrappen. DFUReport Nr. 8. Danish Fisheries Research (in Danish).
Mellas, E. J. & J. M. Haynes, 1985. Swimming performance and behaviour of Rainbow trout (Salmo gairdneri) and White Perch (Morone americana): Effects of attaching telemetry transmitters. Can. J. Fish. aquat. Sci. 42: 488–493.
Nall, G. H., 1930. The Life of the Sea Trout. Seeley, Service & Co. Ltd. London.
Poulsen, E. M., 1935. Nye undersøgelser over Gudenåens lakseog havørredbestand. Beretning til Ministeriet for Landbrug og Fiskeri fra Den Danske Biologiske Station, nr.15. C. A. Reizel. København. 1935 (in Danish).
Økland, F., T. G. Heggberget & B. Jonsson, 1994. Migratory behaviour of wild and farmed Atlantic salmon (Salmo salar) during spawning. J. Fish Biol. 46: 1–7.
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Aarestrup, K., Jepsen, N. Spawning migration of sea trout (Salmo trutta (L)) in a Danish river. Hydrobiologia 371, 275–281 (1998). https://doi.org/10.1023/A:1017074011007
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DOI: https://doi.org/10.1023/A:1017074011007