Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway
Abstract Recent large influxes of non‐native Pacific pink salmon ( Oncorhynchus gorbuscha ) to North European rivers have raised concern over their potential negative impacts on native salmonids and recipient ecosystems. The eggs and carcasses of semelparous pink salmon may provide a significant nut...
Published in: | Ecology of Freshwater Fish |
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Online Access: | http://dx.doi.org/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12582 |
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crwiley:10.1111/eff.12582 2024-06-02T08:03:35+00:00 Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway Dunlop, Kathy Eloranta, Antti P. Schoen, Erik Wipfli, Mark Jensen, Jenny L.A. Muladal, Rune Christensen, Guttorm N. 2020 http://dx.doi.org/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12582 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology of Freshwater Fish volume 30, issue 2, page 270-283 ISSN 0906-6691 1600-0633 journal-article 2020 crwiley https://doi.org/10.1111/eff.12582 2024-05-03T11:57:24Z Abstract Recent large influxes of non‐native Pacific pink salmon ( Oncorhynchus gorbuscha ) to North European rivers have raised concern over their potential negative impacts on native salmonids and recipient ecosystems. The eggs and carcasses of semelparous pink salmon may provide a significant nutrient and energy subsidy to native biota, but this phenomenon has not been widely documented outside the species' native distribution. We analysed the stomach contents and stable isotope values (δ 15 N and δ 13 C) in muscle and liver tissues of juvenile Atlantic salmon ( Salmo salar ) and brown trout ( Salmo trutta ) to determine whether these native salmonids utilise marine‐derived nutrients and energy provided by pink salmon eggs and carcasses in the subarctic river system Vesterelva, northern Norway. Although egg foraging and assimilation of marine‐derived nutrients in fish body tissues were found to be minor at the population level, a few juvenile salmon and trout had recently eaten large quantities of pink salmon eggs. Some of these individuals also had high δ 15 N and δ 13 C values, indicating a long‐term diet subsidised by marine‐derived nutrients and energy from pink salmon eggs. Hence, our study provides novel evidence that the eggs of invasive pink salmon may provide an energetic, profitable food resource for juvenile native fish. More research is needed to understand the broader ecological implications for fishes and other biota in river ecosystems invaded by pink salmon. Article in Journal/Newspaper Atlantic salmon Northern Norway Oncorhynchus gorbuscha Pink salmon Salmo salar Subarctic Wiley Online Library Norway Pacific Vesterelva ENVELOPE(13.158,13.158,65.618,65.618) Ecology of Freshwater Fish 30 2 270 283 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Recent large influxes of non‐native Pacific pink salmon ( Oncorhynchus gorbuscha ) to North European rivers have raised concern over their potential negative impacts on native salmonids and recipient ecosystems. The eggs and carcasses of semelparous pink salmon may provide a significant nutrient and energy subsidy to native biota, but this phenomenon has not been widely documented outside the species' native distribution. We analysed the stomach contents and stable isotope values (δ 15 N and δ 13 C) in muscle and liver tissues of juvenile Atlantic salmon ( Salmo salar ) and brown trout ( Salmo trutta ) to determine whether these native salmonids utilise marine‐derived nutrients and energy provided by pink salmon eggs and carcasses in the subarctic river system Vesterelva, northern Norway. Although egg foraging and assimilation of marine‐derived nutrients in fish body tissues were found to be minor at the population level, a few juvenile salmon and trout had recently eaten large quantities of pink salmon eggs. Some of these individuals also had high δ 15 N and δ 13 C values, indicating a long‐term diet subsidised by marine‐derived nutrients and energy from pink salmon eggs. Hence, our study provides novel evidence that the eggs of invasive pink salmon may provide an energetic, profitable food resource for juvenile native fish. More research is needed to understand the broader ecological implications for fishes and other biota in river ecosystems invaded by pink salmon. |
format |
Article in Journal/Newspaper |
author |
Dunlop, Kathy Eloranta, Antti P. Schoen, Erik Wipfli, Mark Jensen, Jenny L.A. Muladal, Rune Christensen, Guttorm N. |
spellingShingle |
Dunlop, Kathy Eloranta, Antti P. Schoen, Erik Wipfli, Mark Jensen, Jenny L.A. Muladal, Rune Christensen, Guttorm N. Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
author_facet |
Dunlop, Kathy Eloranta, Antti P. Schoen, Erik Wipfli, Mark Jensen, Jenny L.A. Muladal, Rune Christensen, Guttorm N. |
author_sort |
Dunlop, Kathy |
title |
Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
title_short |
Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
title_full |
Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
title_fullStr |
Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
title_full_unstemmed |
Evidence of energy and nutrient transfer from invasive pink salmon ( Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) in northern Norway |
title_sort |
evidence of energy and nutrient transfer from invasive pink salmon ( oncorhynchus gorbuscha) spawners to juvenile atlantic salmon ( salmo salar) and brown trout ( salmo trutta) in northern norway |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12582 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eff.12582 |
long_lat |
ENVELOPE(13.158,13.158,65.618,65.618) |
geographic |
Norway Pacific Vesterelva |
geographic_facet |
Norway Pacific Vesterelva |
genre |
Atlantic salmon Northern Norway Oncorhynchus gorbuscha Pink salmon Salmo salar Subarctic |
genre_facet |
Atlantic salmon Northern Norway Oncorhynchus gorbuscha Pink salmon Salmo salar Subarctic |
op_source |
Ecology of Freshwater Fish volume 30, issue 2, page 270-283 ISSN 0906-6691 1600-0633 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eff.12582 |
container_title |
Ecology of Freshwater Fish |
container_volume |
30 |
container_issue |
2 |
container_start_page |
270 |
op_container_end_page |
283 |
_version_ |
1800748156310257664 |