Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts
High levels of hybridization between Atlantic salmon Salmo salar and brown trout Salmo trutta have been reported in the River Driva. This study presents the underlying mechanisms of development of seawater (SW) tolerance and marine migration pattern for S. salar × S. trutta hybrids. Migrating S. sal...
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crwiley:10.1111/j.1095-8649.2012.03481.x 2024-06-02T08:03:34+00:00 Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts Urke, H. A. Kristensen, T. Arnekleiv, J. V. Haugen, T. O. Kjærstad, G. Stefansson, S. O. Ebbesson, L. O. E. Nilsen, T. O. 2012 http://dx.doi.org/10.1111/j.1095-8649.2012.03481.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2012.03481.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2012.03481.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 82, issue 1, page 206-227 ISSN 0022-1112 1095-8649 journal-article 2012 crwiley https://doi.org/10.1111/j.1095-8649.2012.03481.x 2024-05-03T10:54:04Z High levels of hybridization between Atlantic salmon Salmo salar and brown trout Salmo trutta have been reported in the River Driva. This study presents the underlying mechanisms of development of seawater (SW) tolerance and marine migration pattern for S. salar × S. trutta hybrids. Migrating S. salar × S. trutta hybrid smolts caught in the River Driva, Norway (a river containing Gyrodactylus salaris ), displayed freshwater (FW) gill Na + , K + ‐ATPase (NKA) activity levels of 11·8 µmol ADP mg protein h −1 , which were equal to or higher than activity levels observed in S. salar and S. trutta smolts. Following 4 days of SW exposure (salinity 32·3), enzyme activity remained high and plasma ion levels were maintained within the normal physiological range observed in S. salar smolts, indicating no signs of ion perturbations in S. salar × S. trutta hybrids. SW exposure induced an increase in NKA α 1b‐subunit mRNA levels with a concurrent decrease in α 1a levels. Salmo salar × S. trutta post‐smolts migrated rapidly through the fjord system, with increasing speed with distance from the river, as is often seen in S. salar smolts. The present findings suggest that S. salar × S. trutta smolts, as judged by the activity and transcription of the NKA system, regulation of plasma ion levels and migration speed more closely resemble S. salar than S. trutta . Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Driva ENVELOPE(9.633,9.633,62.533,62.533) Norway Journal of Fish Biology 82 1 206 227 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
High levels of hybridization between Atlantic salmon Salmo salar and brown trout Salmo trutta have been reported in the River Driva. This study presents the underlying mechanisms of development of seawater (SW) tolerance and marine migration pattern for S. salar × S. trutta hybrids. Migrating S. salar × S. trutta hybrid smolts caught in the River Driva, Norway (a river containing Gyrodactylus salaris ), displayed freshwater (FW) gill Na + , K + ‐ATPase (NKA) activity levels of 11·8 µmol ADP mg protein h −1 , which were equal to or higher than activity levels observed in S. salar and S. trutta smolts. Following 4 days of SW exposure (salinity 32·3), enzyme activity remained high and plasma ion levels were maintained within the normal physiological range observed in S. salar smolts, indicating no signs of ion perturbations in S. salar × S. trutta hybrids. SW exposure induced an increase in NKA α 1b‐subunit mRNA levels with a concurrent decrease in α 1a levels. Salmo salar × S. trutta post‐smolts migrated rapidly through the fjord system, with increasing speed with distance from the river, as is often seen in S. salar smolts. The present findings suggest that S. salar × S. trutta smolts, as judged by the activity and transcription of the NKA system, regulation of plasma ion levels and migration speed more closely resemble S. salar than S. trutta . |
format |
Article in Journal/Newspaper |
author |
Urke, H. A. Kristensen, T. Arnekleiv, J. V. Haugen, T. O. Kjærstad, G. Stefansson, S. O. Ebbesson, L. O. E. Nilsen, T. O. |
spellingShingle |
Urke, H. A. Kristensen, T. Arnekleiv, J. V. Haugen, T. O. Kjærstad, G. Stefansson, S. O. Ebbesson, L. O. E. Nilsen, T. O. Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
author_facet |
Urke, H. A. Kristensen, T. Arnekleiv, J. V. Haugen, T. O. Kjærstad, G. Stefansson, S. O. Ebbesson, L. O. E. Nilsen, T. O. |
author_sort |
Urke, H. A. |
title |
Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
title_short |
Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
title_full |
Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
title_fullStr |
Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
title_full_unstemmed |
Seawater tolerance and post‐smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts |
title_sort |
seawater tolerance and post‐smolt migration of wild atlantic salmon salmo salar× brown trout s. trutta hybrid smolts |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2012.03481.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2012.03481.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2012.03481.x |
long_lat |
ENVELOPE(9.633,9.633,62.533,62.533) |
geographic |
Driva Norway |
geographic_facet |
Driva Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 82, issue 1, page 206-227 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2012.03481.x |
container_title |
Journal of Fish Biology |
container_volume |
82 |
container_issue |
1 |
container_start_page |
206 |
op_container_end_page |
227 |
_version_ |
1800748138672160768 |