Relationship between marine growth and sea survival of two anadromous salmonid fish species
Source at: http://doi.org/10.1139/cjfas-2016-0408 Résumé : L’étude fait état de preuves empiriques appuyant le paradigme de « croissance–survie » chez les phases marines de l’omble chevalier (Salvelinus alpinus) et de la truite de mer (Salmo trutta). Ce paradigme postule que les individus plus grand...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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NRC Research Press
2017
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Online Access: | https://hdl.handle.net/10037/12428 https://doi.org/10.1139/cjfas-2016-0408 |
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University of Tromsø: Munin Open Research Archive |
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English |
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VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Jensen, Arne Johan Finstad, Bengt Fiske, Peder Forseth, Torbjørn Rikardsen, Audun H. Ugedal, Ola Relationship between marine growth and sea survival of two anadromous salmonid fish species |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
description |
Source at: http://doi.org/10.1139/cjfas-2016-0408 Résumé : L’étude fait état de preuves empiriques appuyant le paradigme de « croissance–survie » chez les phases marines de l’omble chevalier (Salvelinus alpinus) et de la truite de mer (Salmo trutta). Ce paradigme postule que les individus plus grands ou a` croissance plus rapide sont plus susceptibles de survivre que leurs conspécifiques plus petits ou a` croissance plus lente. Nous avons utilisé des données de capture de longue durée (25 ans) obtenues d’un piège dans la rivière Halselva, en Norvège, durant les migrations annuelles entre les milieux marins et d’eau douce. Des résultats semblables ont été obtenus pour les deux espèces. Il y a une corrélation positive entre la croissance durant le séjour en mer et les taux de retour, témoignant d’un lien entre un taux de survie plus élevé et la croissance. Le taux de croissance, la survie et la durée du séjour en mer des individus migrant pour la première fois sont corrélés, ce qui donne a` penser que des conditions ambiantes communes en mer influencent la productivité annuelle des poissons. Les températures de l’eau douce et de mer ont une incidence sur le moment de la migration, alors que les variations annuelles de la croissance et de la survie en mer ne sont pas corrélées a` la température. Cela porte a` croire qu’un autre facteur, tel que la variation de l’apport énergétique, constituerait la principale cause de variation de la croissance annuelle. En outre, le taux de croissance en mer des deux espèces pourrait refléter la production annuelle globale de l’écosystème du fjord, particulièrement en ce qui concerne leurs proies principales. [Traduit par la Rédaction] This study found empirical evidence supporting the “growth–survival” paradigm in the marine phase of Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta). The paradigm postulates that larger or faster-growing individuals are more likely to survive than smaller or slower-growing conspecifics. The study employed long-term (25 year) capture data from a trap in the River Halselva in Norway during annual migration between marine and freshwater environments. Similar results were found for both species. Growth during the sea sojourn and return rates were positively correlated, linking increased survival with growth. Specific growth rate, survival, and duration of the sea sojourn of first-time migrants were correlated, suggesting that common environmental conditions at sea influence annual fish productivity. Freshwater and sea temperatures affected migration timing, whereas annual variation in marine growth and survival did not correlate with temperatures. This suggests that other factors such as variation in energy intake were the main source of annual growth variations. Moreover, the marine growth rate of the two species may signal annual overall fjord ecosystem production, especially related to their main prey. |
format |
Article in Journal/Newspaper |
author |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder Forseth, Torbjørn Rikardsen, Audun H. Ugedal, Ola |
author_facet |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder Forseth, Torbjørn Rikardsen, Audun H. Ugedal, Ola |
author_sort |
Jensen, Arne Johan |
title |
Relationship between marine growth and sea survival of two anadromous salmonid fish species |
title_short |
Relationship between marine growth and sea survival of two anadromous salmonid fish species |
title_full |
Relationship between marine growth and sea survival of two anadromous salmonid fish species |
title_fullStr |
Relationship between marine growth and sea survival of two anadromous salmonid fish species |
title_full_unstemmed |
Relationship between marine growth and sea survival of two anadromous salmonid fish species |
title_sort |
relationship between marine growth and sea survival of two anadromous salmonid fish species |
publisher |
NRC Research Press |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/12428 https://doi.org/10.1139/cjfas-2016-0408 |
long_lat |
ENVELOPE(-57.831,-57.831,51.500,51.500) ENVELOPE(139.986,139.986,-66.661,-66.661) ENVELOPE(141.558,141.558,-66.764,-66.764) |
geographic |
Arctic Chevalier Norway Poissons Les Retour |
geographic_facet |
Arctic Chevalier Norway Poissons Les Retour |
genre |
Arctic Salvelinus alpinus |
genre_facet |
Arctic Salvelinus alpinus |
op_relation |
Canadian Journal of Fisheries and Aquatic Sciences Jensen, A. J., Finstad, B., Fiske, P., Forseth, T., Rikardsen, A. H. & Ugedal, O. (2017). Relationship between marine growth and sea survival of two anadromous salmonid fish species. Canadian Journal of Fisheries and Aquatic Sciences, 00(0000), 1-8. http://doi.org/10.1139/cjfas-2016-0408 FRIDAID 1520824 doi:10.1139/cjfas-2016-0408 0706-652X 1205-7533 https://hdl.handle.net/10037/12428 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1139/cjfas-2016-0408 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
75 |
container_issue |
4 |
container_start_page |
621 |
op_container_end_page |
628 |
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1766349905503191040 |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/12428 2023-05-15T15:19:42+02:00 Relationship between marine growth and sea survival of two anadromous salmonid fish species Jensen, Arne Johan Finstad, Bengt Fiske, Peder Forseth, Torbjørn Rikardsen, Audun H. Ugedal, Ola 2017-06-12 https://hdl.handle.net/10037/12428 https://doi.org/10.1139/cjfas-2016-0408 eng eng NRC Research Press Canadian Journal of Fisheries and Aquatic Sciences Jensen, A. J., Finstad, B., Fiske, P., Forseth, T., Rikardsen, A. H. & Ugedal, O. (2017). Relationship between marine growth and sea survival of two anadromous salmonid fish species. Canadian Journal of Fisheries and Aquatic Sciences, 00(0000), 1-8. http://doi.org/10.1139/cjfas-2016-0408 FRIDAID 1520824 doi:10.1139/cjfas-2016-0408 0706-652X 1205-7533 https://hdl.handle.net/10037/12428 openAccess VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.1139/cjfas-2016-0408 2021-06-25T17:55:32Z Source at: http://doi.org/10.1139/cjfas-2016-0408 Résumé : L’étude fait état de preuves empiriques appuyant le paradigme de « croissance–survie » chez les phases marines de l’omble chevalier (Salvelinus alpinus) et de la truite de mer (Salmo trutta). Ce paradigme postule que les individus plus grands ou a` croissance plus rapide sont plus susceptibles de survivre que leurs conspécifiques plus petits ou a` croissance plus lente. Nous avons utilisé des données de capture de longue durée (25 ans) obtenues d’un piège dans la rivière Halselva, en Norvège, durant les migrations annuelles entre les milieux marins et d’eau douce. Des résultats semblables ont été obtenus pour les deux espèces. Il y a une corrélation positive entre la croissance durant le séjour en mer et les taux de retour, témoignant d’un lien entre un taux de survie plus élevé et la croissance. Le taux de croissance, la survie et la durée du séjour en mer des individus migrant pour la première fois sont corrélés, ce qui donne a` penser que des conditions ambiantes communes en mer influencent la productivité annuelle des poissons. Les températures de l’eau douce et de mer ont une incidence sur le moment de la migration, alors que les variations annuelles de la croissance et de la survie en mer ne sont pas corrélées a` la température. Cela porte a` croire qu’un autre facteur, tel que la variation de l’apport énergétique, constituerait la principale cause de variation de la croissance annuelle. En outre, le taux de croissance en mer des deux espèces pourrait refléter la production annuelle globale de l’écosystème du fjord, particulièrement en ce qui concerne leurs proies principales. [Traduit par la Rédaction] This study found empirical evidence supporting the “growth–survival” paradigm in the marine phase of Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta). The paradigm postulates that larger or faster-growing individuals are more likely to survive than smaller or slower-growing conspecifics. The study employed long-term (25 year) capture data from a trap in the River Halselva in Norway during annual migration between marine and freshwater environments. Similar results were found for both species. Growth during the sea sojourn and return rates were positively correlated, linking increased survival with growth. Specific growth rate, survival, and duration of the sea sojourn of first-time migrants were correlated, suggesting that common environmental conditions at sea influence annual fish productivity. Freshwater and sea temperatures affected migration timing, whereas annual variation in marine growth and survival did not correlate with temperatures. This suggests that other factors such as variation in energy intake were the main source of annual growth variations. Moreover, the marine growth rate of the two species may signal annual overall fjord ecosystem production, especially related to their main prey. Article in Journal/Newspaper Arctic Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Chevalier ENVELOPE(-57.831,-57.831,51.500,51.500) Norway Poissons Les ENVELOPE(139.986,139.986,-66.661,-66.661) Retour ENVELOPE(141.558,141.558,-66.764,-66.764) Canadian Journal of Fisheries and Aquatic Sciences 75 4 621 628 |