The age and growth of Vistula River migratory sea trout, Salmo trutta L., caught in commercial catches in the Vistula in 2017-2018 were analyzed. The mean length of the sea trout caught was 61.4 cm in 2017 and 62.8 cm in 2018. It was confirmed that the fish caught reached an average of 56.5 cm following the first year at sea, 69 cm after the second year, and 82 cm after the third. The dominant age class among the fish in the catches was a sea age 1+. No older age classes than 3+ were noted. The age at smoltification of the sea trout examined in most instances was 2+. The results obtained were compared and discussed in light of historical results. The condition coefficient calculated was lower than that of the 1960s.
If the inline PDF is not rendering correctly, you can download the PDF file here.
BACC II Author Team 2015 – Second Assessment of Climate Change for the Baltic; Regional Climate Studies; 1st ed. – Springer Cham 501 p.
Backiel T. Sych R. 1958 – Resorption and spawning marks of sea trout scales in Polish waters – Rocz. Nauk Rol. 73-B: 119-158 (in Polish).
Bartel R. Auvinen H. Ikonen E. 2001 – Differences in migration pattern and growth of Polish and Finnish sea trout (Salmo trutta L.) released in the same areas – Arch. Pol. Fish. 9: 105-122.
Bartel R. Wiśniewolski W. Prus P. 2007 – Impact of the Wloclawek dam on migratory fish in the Vistula River – Arch. Pol. Fish. 15: 141-156.
Bartel R. Pachur M. Bernaś R. 2010 – Distribution migrations and growth of tagged sea trout released into the Vistula River – Arch. Pol. Fish. 18: 225-237.
Bontemps S. 1977 – Fish migration through the fishway at a damn on the Vistula River – Gosp. Ryb. 29: 18-19 (in Polish).
Borzęcka I. 1999 – The age of migrating Vistula sea trout and the variability of smolt recruitment to the sea before damming the river – Bull. Sea Fish. Inst. Gdynia 3(148): 3-21.
Borzęcka I. 2001 – Growth of Vistula sea trout (Salmo trutta m. trutta L.) based on adults caught in the Vistula River prior to the construction of the dam in Włocławek – Bull. Sea Fish. Inst. Gdynia 2(153): 3-12.
Borzęcka I. 2003 – Characteristics of sea trout (Salmo trutta m. trutta) from the Drweca River based on scale samples collected between 1988–1992 – Arch. Pol. Fish. 11: 165-179.
Chełkowski Z. 1974 – Studies on Rega River trout (Salmo trutta L.) biology – Rozprawy AR Szczecin Nr 37 (in Polish).
Degerman E. Leonardsson K. Lundqvist H. 2012 – Coastal migrations temporary use of neighboring rivers and growth of sea trout (Salmo trutta) from nine northern Baltic Sea rivers – ICES J. Mar. Sci. 69: 971-980.
Dębowski P. 2018 – The largest Baltic population of sea trout (Salmo trutta L.): its decline restoration attempts and current status – Fish. Aquat. Life 26: 81-100.
Dixon B. 1931 – Age and growth rate of sea trout (Salmo trutta) in the Reda and Dunajec rivers – Prace Dz. Ekon. i Organiz. Rybactwa PAN Gosp. Wiejskiej 46 (in Polish).
ICES 2018 – Report of the Baltic Salmon and Trout Assessment Working Group (WGBAST) – 20-28 March 2018 Turku Finland. ICES CM 2018/ACOM:10. 369 p.
Jokiel J. 1961 – Results of tagging Vistula River sea trout smolts – Gosp. Ryb. 13: 18-20 (in Polish).
Jonsson B. Jonsson N. Brodtkorb E. Ingebrigtsen P.J. 2001 – Life-history traits of brown trout vary with the size of small streams – Funct. Ecol. 15: 310-317.
Kallio-Nyberg I. Veneranta L. Saloniemi I. Jutila E. Pakarinen T. 2017 – Spatial distribution of migratory Salmo trutta in the northern Baltic Sea – Boreal Environ. Res. 22: 431-444.
Pałka W. Bieniarz K. 1983 – Migration growth exploitation and marking of Dunajec sea trout (Salmo trutta L.) – Rocz. Nauk Rol. 100-H-2: 71-94 (in Polish).
Radtke G. Bernaś R. Płąchocki D. Prus P. Wiśniewolski W. 2018 – Does the dam in Włocławek still have an impact on the ichthyofauna of the lower Vistula River?–Some ichthyological and environmental data – Rocz. Nauk. PZW 31: 21-56 (in Polish).
Ricker W.E. 1975 – Computation and interpretation of biological statistics of fish populations – Bull. Fish. Res. Board Can. 191: 203-233.
Sych R. 1967 – Interpreting the scales of sea trout (Salmo trutta L.) from the Vistula River – Acta Hydrobiol. 9: 231-280 (in Polish).
Wąs A. Bernaś R. 2016 – Long-term and seasonal genetic differentiation in wild and enhanced stocks of sea trout (Salmo trutta m. trutta L.) from the Vistula River in the southern Baltic – Management implications – Fish. Res.175: 57-65.
Żarnecki S. 1957 – The age and growth of seasonal populations of sea trout entering the river Vistula in autumn 1951 – ICES C.M. 1957/73.
Żarnecki S. 1963 – Occurrence of seasonal populations of Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta L.) in the Vistula River – Acta Hydrobiol. 5: 255-294 (in Polish).