Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea
This study investigated stock‐specific variation in selected ecophysiological variables during the feeding migrations of Atlantic salmon Salmo salar in the Baltic Sea. Oxidative stress biomarkers and EROD (ethoxyresorufin‐ O ‐deethylase, Cyp1A enzyme) activity were used as indicators of possible env...
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2012.03386.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2012.03386.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2012.03386.x |
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crwiley:10.1111/j.1095-8649.2012.03386.x 2024-06-02T08:03:33+00:00 Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea Vuori, K. Kiljunen, M. Kanerva, M. Koljonen, M.‐L. Nikinmaa, M. 2012 http://dx.doi.org/10.1111/j.1095-8649.2012.03386.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2012.03386.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2012.03386.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 81, issue 6, page 1815-1833 ISSN 0022-1112 1095-8649 journal-article 2012 crwiley https://doi.org/10.1111/j.1095-8649.2012.03386.x 2024-05-03T11:56:28Z This study investigated stock‐specific variation in selected ecophysiological variables during the feeding migrations of Atlantic salmon Salmo salar in the Baltic Sea. Oxidative stress biomarkers and EROD (ethoxyresorufin‐ O ‐deethylase, Cyp1A enzyme) activity were used as indicators of possible environmental stress and stable isotopes as determinants of diet and trophic position. Latvian S. salar stocks Daugava and Gauja had distinct stable‐isotope signatures compared to the other stocks, indicating differences in migration patterns, residency or arrival times, or dietary specialization among stocks. Salmo salar originating from Daugava and Gauja also had lower catalase enzyme activity than the other stocks. Post‐smolts originating from rivers of the Gulf of Finland had elevated EROD activities compared to fish of the same age from Bothnian Bay rivers, which could indicate exposure to organochlorine pollutants. No other stock‐specific differences in oxidative stress biomarkers were found. The study demonstrates how genetic, oxidative stress biomarker, EROD and stable‐isotope data may be combined to study trophic position, prey prevalence and environmental stress of mixed S. salar stocks foraging in the sea. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 81 6 1815 1833 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
This study investigated stock‐specific variation in selected ecophysiological variables during the feeding migrations of Atlantic salmon Salmo salar in the Baltic Sea. Oxidative stress biomarkers and EROD (ethoxyresorufin‐ O ‐deethylase, Cyp1A enzyme) activity were used as indicators of possible environmental stress and stable isotopes as determinants of diet and trophic position. Latvian S. salar stocks Daugava and Gauja had distinct stable‐isotope signatures compared to the other stocks, indicating differences in migration patterns, residency or arrival times, or dietary specialization among stocks. Salmo salar originating from Daugava and Gauja also had lower catalase enzyme activity than the other stocks. Post‐smolts originating from rivers of the Gulf of Finland had elevated EROD activities compared to fish of the same age from Bothnian Bay rivers, which could indicate exposure to organochlorine pollutants. No other stock‐specific differences in oxidative stress biomarkers were found. The study demonstrates how genetic, oxidative stress biomarker, EROD and stable‐isotope data may be combined to study trophic position, prey prevalence and environmental stress of mixed S. salar stocks foraging in the sea. |
format |
Article in Journal/Newspaper |
author |
Vuori, K. Kiljunen, M. Kanerva, M. Koljonen, M.‐L. Nikinmaa, M. |
spellingShingle |
Vuori, K. Kiljunen, M. Kanerva, M. Koljonen, M.‐L. Nikinmaa, M. Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
author_facet |
Vuori, K. Kiljunen, M. Kanerva, M. Koljonen, M.‐L. Nikinmaa, M. |
author_sort |
Vuori, K. |
title |
Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
title_short |
Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
title_full |
Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
title_fullStr |
Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
title_full_unstemmed |
Stock‐specific variation of trophic position, diet and environmental stress markers in Atlantic salmon Salmo salar during feeding migrations in the Baltic Sea |
title_sort |
stock‐specific variation of trophic position, diet and environmental stress markers in atlantic salmon salmo salar during feeding migrations in the baltic sea |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2012.03386.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2012.03386.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2012.03386.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 81, issue 6, page 1815-1833 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2012.03386.x |
container_title |
Journal of Fish Biology |
container_volume |
81 |
container_issue |
6 |
container_start_page |
1815 |
op_container_end_page |
1833 |
_version_ |
1800748106542743552 |