<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The age and growth of Vistula River migratory sea trout, <italic>Salmo trutta</italic> 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.</p></abstract>

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.

Age and growth of sea trout, <italic>Salmo trutta</italic> L., from new commercial catches in the lower Vistula River

Inland Fisheries Institute in Olsztyn, Department of Migratory Fishes

National Marine Fisheries Research Institute, Department of Fisheries Resources

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Age and growth of sea trout,  L., from new commercial catches in the lower Vistula River

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...

Age and growth of sea trout, Salmo trutta L., from new commercial catches in the lower Vistula River

Published Online: Aug 21, 2019

Page range: 72 - 79

Received: Feb 21, 2019

Accepted: Jun 01, 2019

DOI: https://doi.org/10.2478/aopf-2019-0008

Keywords
age structure, sea trout, Vistula River

© 2019 Rafał Bernaś et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Age and growth of sea trout, Salmo trutta L., from new commercial catches in the lower Vistula River

Published Online: Aug 21, 2019

Page range: 72 - 79

Received: Feb 21, 2019

Accepted: Jun 01, 2019

DOI: https://doi.org/10.2478/aopf-2019-0008

Keywordsage structure, sea trout, Vistula River

© 2019 Rafał Bernaś et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
age structure, sea trout, Vistula River