The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta)
Partial migration is common in many animal taxa; however, the physiological variation underpinning migration strategies remains poorly understood. Among salmonid fishes, brown trout (Salmo trutta) is one of the species that exhibits the most complex variation in sympatric migration strategies, expre...
Published in: | Physiological and Biochemical Zoology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://pure.au.dk/portal/da/publications/the-physiological-basis-of-the-migration-continuum-in-brown-trout--salmo-trutta(45df200e-5fd6-4385-9564-6ae109f622d3).html https://doi.org/10.1086/674869 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/45df200e-5fd6-4385-9564-6ae109f622d3 2023-12-17T10:23:46+01:00 The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) Boel, Mikkel Aarestrup, Kim Baktoft, Henrik Larsen, Torben Madsen, Steffen Sondergaard Malte, Hans Skov, Christian Svendsen, Jon C. Koed, Anders 2014-03-01 https://pure.au.dk/portal/da/publications/the-physiological-basis-of-the-migration-continuum-in-brown-trout--salmo-trutta(45df200e-5fd6-4385-9564-6ae109f622d3).html https://doi.org/10.1086/674869 eng eng https://pure.au.dk/portal/da/publications/the-physiological-basis-of-the-migration-continuum-in-brown-trout--salmo-trutta(45df200e-5fd6-4385-9564-6ae109f622d3).html info:eu-repo/semantics/restrictedAccess Boel , M , Aarestrup , K , Baktoft , H , Larsen , T , Madsen , S S , Malte , H , Skov , C , Svendsen , J C & Koed , A 2014 , ' The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) ' , Physiological and Biochemical Zoology , vol. 87 , no. 2 , pp. 334-345 . https://doi.org/10.1086/674869 JUVENILE ATLANTIC SALMON LIFE-HISTORY VARIATION PARR-SMOLT TRANSFORMATION CHAR SALVELINUS-ALPINUS LIPID-METABOLISM ARCTIC CHARR NA+,K+-ATPASE ACTIVITY SEASONAL-VARIATIONS STEELHEAD TROUT NICHE SHIFT article 2014 ftuniaarhuspubl https://doi.org/10.1086/674869 2023-11-23T00:01:34Z Partial migration is common in many animal taxa; however, the physiological variation underpinning migration strategies remains poorly understood. Among salmonid fishes, brown trout (Salmo trutta) is one of the species that exhibits the most complex variation in sympatric migration strategies, expressed as a migration continuum, ranging from residency to anadromy. In looking at brown trout, our objective with this study was to test the hypothesis that variation in migration strategies is underpinned by physiological variation. Prior to migration, physiological samples were taken from fish in the stream and then released at the capture site. Using telemetry, we subsequently classified fish as resident, short-distance migrants (potamodromous), or long-distance migrants (potentially anadromous). Our results revealed that fish belonging to the resident strategy differed from those exhibiting any of the two migratory strategies. Gill Na,K-ATPase activity, condition factor, and indicators of nutritional status suggested that trout from the two migratory strategies were smoltified and energetically depleted before leaving the stream, compared to those in the resident strategy. The trout belonging to the two migratory strategies were generally similar; however, lower triacylglycerides levels in the short-distance migrants indicated that they were more lipid depleted prior to migration compared with the long-distance migrants. In the context of migration cost, we suggest that additional lipid depletion makes migrants more inclined to terminate migration at the first given feeding opportunity, whereas individuals that are less lipid depleted will migrate farther. Collectively, our data suggest that the energetic state of individual fish provides a possible mechanism underpinning the migration continuum in brown trout. Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon Salvelinus alpinus Aarhus University: Research Arctic Physiological and Biochemical Zoology 87 2 334 345 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
JUVENILE ATLANTIC SALMON LIFE-HISTORY VARIATION PARR-SMOLT TRANSFORMATION CHAR SALVELINUS-ALPINUS LIPID-METABOLISM ARCTIC CHARR NA+,K+-ATPASE ACTIVITY SEASONAL-VARIATIONS STEELHEAD TROUT NICHE SHIFT |
spellingShingle |
JUVENILE ATLANTIC SALMON LIFE-HISTORY VARIATION PARR-SMOLT TRANSFORMATION CHAR SALVELINUS-ALPINUS LIPID-METABOLISM ARCTIC CHARR NA+,K+-ATPASE ACTIVITY SEASONAL-VARIATIONS STEELHEAD TROUT NICHE SHIFT Boel, Mikkel Aarestrup, Kim Baktoft, Henrik Larsen, Torben Madsen, Steffen Sondergaard Malte, Hans Skov, Christian Svendsen, Jon C. Koed, Anders The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
topic_facet |
JUVENILE ATLANTIC SALMON LIFE-HISTORY VARIATION PARR-SMOLT TRANSFORMATION CHAR SALVELINUS-ALPINUS LIPID-METABOLISM ARCTIC CHARR NA+,K+-ATPASE ACTIVITY SEASONAL-VARIATIONS STEELHEAD TROUT NICHE SHIFT |
description |
Partial migration is common in many animal taxa; however, the physiological variation underpinning migration strategies remains poorly understood. Among salmonid fishes, brown trout (Salmo trutta) is one of the species that exhibits the most complex variation in sympatric migration strategies, expressed as a migration continuum, ranging from residency to anadromy. In looking at brown trout, our objective with this study was to test the hypothesis that variation in migration strategies is underpinned by physiological variation. Prior to migration, physiological samples were taken from fish in the stream and then released at the capture site. Using telemetry, we subsequently classified fish as resident, short-distance migrants (potamodromous), or long-distance migrants (potentially anadromous). Our results revealed that fish belonging to the resident strategy differed from those exhibiting any of the two migratory strategies. Gill Na,K-ATPase activity, condition factor, and indicators of nutritional status suggested that trout from the two migratory strategies were smoltified and energetically depleted before leaving the stream, compared to those in the resident strategy. The trout belonging to the two migratory strategies were generally similar; however, lower triacylglycerides levels in the short-distance migrants indicated that they were more lipid depleted prior to migration compared with the long-distance migrants. In the context of migration cost, we suggest that additional lipid depletion makes migrants more inclined to terminate migration at the first given feeding opportunity, whereas individuals that are less lipid depleted will migrate farther. Collectively, our data suggest that the energetic state of individual fish provides a possible mechanism underpinning the migration continuum in brown trout. |
format |
Article in Journal/Newspaper |
author |
Boel, Mikkel Aarestrup, Kim Baktoft, Henrik Larsen, Torben Madsen, Steffen Sondergaard Malte, Hans Skov, Christian Svendsen, Jon C. Koed, Anders |
author_facet |
Boel, Mikkel Aarestrup, Kim Baktoft, Henrik Larsen, Torben Madsen, Steffen Sondergaard Malte, Hans Skov, Christian Svendsen, Jon C. Koed, Anders |
author_sort |
Boel, Mikkel |
title |
The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
title_short |
The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
title_full |
The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
title_fullStr |
The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
title_full_unstemmed |
The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) |
title_sort |
physiological basis of the migration continuum in brown trout ( salmo trutta) |
publishDate |
2014 |
url |
https://pure.au.dk/portal/da/publications/the-physiological-basis-of-the-migration-continuum-in-brown-trout--salmo-trutta(45df200e-5fd6-4385-9564-6ae109f622d3).html https://doi.org/10.1086/674869 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Atlantic salmon Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Atlantic salmon Salvelinus alpinus |
op_source |
Boel , M , Aarestrup , K , Baktoft , H , Larsen , T , Madsen , S S , Malte , H , Skov , C , Svendsen , J C & Koed , A 2014 , ' The Physiological Basis of the Migration Continuum in Brown Trout ( Salmo trutta) ' , Physiological and Biochemical Zoology , vol. 87 , no. 2 , pp. 334-345 . https://doi.org/10.1086/674869 |
op_relation |
https://pure.au.dk/portal/da/publications/the-physiological-basis-of-the-migration-continuum-in-brown-trout--salmo-trutta(45df200e-5fd6-4385-9564-6ae109f622d3).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1086/674869 |
container_title |
Physiological and Biochemical Zoology |
container_volume |
87 |
container_issue |
2 |
container_start_page |
334 |
op_container_end_page |
345 |
_version_ |
1785560173953155072 |