Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland
Abstract There is some evidence that the river migration success of Atlantic salmon smolts, on their first migration to sea, varies both spatially and temporally. However, we have only a poor understanding of what may be driving this variation. In this study, we used acoustic telemetry to quantify t...
Published in: | Journal of Fish Biology |
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Online Access: | http://dx.doi.org/10.1111/jfb.15884 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15884 |
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crwiley:10.1111/jfb.15884 2024-09-15T17:55:58+00:00 Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland Rodger, Jessica R. Guthrie, Jemma Honkanen, Hannele M. Lothian, Angus J. Lilly, Jessie Walters, Marcus Miller, Richie Hawkins, Lorraine Reeve, Al Ribbens, Jamie Henderson, Jim Parke, Debbie Green, Amy Shields, Brian A. Ramsden, Philip Fletcher, Melanie Kettle‐White, Alan Shaw, Brian Burns, Stephen Laughton, Robert Conroy, Chris Daphne, Chris Williams, Keith Robertson, Sean Bean, Colin W. del Villar, Diego Waters, Catherine Rosell, Robert Cotter, Deirdre Smith, Melanie Maoiléidigh, Niall Ó. Kennedy, Richard Adams, Colin E. European Commission Environment Agency Natural England NatureScot 2024 http://dx.doi.org/10.1111/jfb.15884 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15884 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Journal of Fish Biology ISSN 0022-1112 1095-8649 journal-article 2024 crwiley https://doi.org/10.1111/jfb.15884 2024-08-15T04:21:30Z Abstract There is some evidence that the river migration success of Atlantic salmon smolts, on their first migration to sea, varies both spatially and temporally. However, we have only a poor understanding of what may be driving this variation. In this study, we used acoustic telemetry to quantify the spatial and temporal variations in river migration success in Atlantic salmon smolts on their first migration to sea. In total 4120 Atlantic salmon smolts migrating through 22 rivers in Scotland, England, Ireland, and Northern Ireland over multiple years were included in the study. Individuals were defined as successful migrants if detected leaving the river to enter marine waters. The results show significant temporal (up to 4 years) and spatial (river) variations in migration success, with overall between‐river migration success varying from 3.4% to 97.0% and between years from 3.4% and 61.0%. Temporal variation in migration success was river specific, with some rivers being more temporally stable (exhibiting little variation between years) than others. Across all rivers and years, individual migration success was predicted positively by body condition and negatively by tag burden. The rate of migration success for a population (migration success standardized to a common river distance [proportion km −1 ]) was predicted by a number of environmental factors. The proportion of river catchment that comprised wetland and woodland positively predicted migration success, whereas the proportion of grassland and peatland in a catchment negatively predicted the rate of migration success. Although the mechanisms through which these effects may be operating were not directly examined in this study, we discuss some potential routes through which they may occur. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract There is some evidence that the river migration success of Atlantic salmon smolts, on their first migration to sea, varies both spatially and temporally. However, we have only a poor understanding of what may be driving this variation. In this study, we used acoustic telemetry to quantify the spatial and temporal variations in river migration success in Atlantic salmon smolts on their first migration to sea. In total 4120 Atlantic salmon smolts migrating through 22 rivers in Scotland, England, Ireland, and Northern Ireland over multiple years were included in the study. Individuals were defined as successful migrants if detected leaving the river to enter marine waters. The results show significant temporal (up to 4 years) and spatial (river) variations in migration success, with overall between‐river migration success varying from 3.4% to 97.0% and between years from 3.4% and 61.0%. Temporal variation in migration success was river specific, with some rivers being more temporally stable (exhibiting little variation between years) than others. Across all rivers and years, individual migration success was predicted positively by body condition and negatively by tag burden. The rate of migration success for a population (migration success standardized to a common river distance [proportion km −1 ]) was predicted by a number of environmental factors. The proportion of river catchment that comprised wetland and woodland positively predicted migration success, whereas the proportion of grassland and peatland in a catchment negatively predicted the rate of migration success. Although the mechanisms through which these effects may be operating were not directly examined in this study, we discuss some potential routes through which they may occur. |
author2 |
European Commission Environment Agency Natural England NatureScot |
format |
Article in Journal/Newspaper |
author |
Rodger, Jessica R. Guthrie, Jemma Honkanen, Hannele M. Lothian, Angus J. Lilly, Jessie Walters, Marcus Miller, Richie Hawkins, Lorraine Reeve, Al Ribbens, Jamie Henderson, Jim Parke, Debbie Green, Amy Shields, Brian A. Ramsden, Philip Fletcher, Melanie Kettle‐White, Alan Shaw, Brian Burns, Stephen Laughton, Robert Conroy, Chris Daphne, Chris Williams, Keith Robertson, Sean Bean, Colin W. del Villar, Diego Waters, Catherine Rosell, Robert Cotter, Deirdre Smith, Melanie Maoiléidigh, Niall Ó. Kennedy, Richard Adams, Colin E. |
spellingShingle |
Rodger, Jessica R. Guthrie, Jemma Honkanen, Hannele M. Lothian, Angus J. Lilly, Jessie Walters, Marcus Miller, Richie Hawkins, Lorraine Reeve, Al Ribbens, Jamie Henderson, Jim Parke, Debbie Green, Amy Shields, Brian A. Ramsden, Philip Fletcher, Melanie Kettle‐White, Alan Shaw, Brian Burns, Stephen Laughton, Robert Conroy, Chris Daphne, Chris Williams, Keith Robertson, Sean Bean, Colin W. del Villar, Diego Waters, Catherine Rosell, Robert Cotter, Deirdre Smith, Melanie Maoiléidigh, Niall Ó. Kennedy, Richard Adams, Colin E. Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
author_facet |
Rodger, Jessica R. Guthrie, Jemma Honkanen, Hannele M. Lothian, Angus J. Lilly, Jessie Walters, Marcus Miller, Richie Hawkins, Lorraine Reeve, Al Ribbens, Jamie Henderson, Jim Parke, Debbie Green, Amy Shields, Brian A. Ramsden, Philip Fletcher, Melanie Kettle‐White, Alan Shaw, Brian Burns, Stephen Laughton, Robert Conroy, Chris Daphne, Chris Williams, Keith Robertson, Sean Bean, Colin W. del Villar, Diego Waters, Catherine Rosell, Robert Cotter, Deirdre Smith, Melanie Maoiléidigh, Niall Ó. Kennedy, Richard Adams, Colin E. |
author_sort |
Rodger, Jessica R. |
title |
Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
title_short |
Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
title_full |
Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
title_fullStr |
Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
title_full_unstemmed |
Determinants of riverine migration success by Atlantic salmon ( Salmo salar) smolts from rivers across the UK and Ireland |
title_sort |
determinants of riverine migration success by atlantic salmon ( salmo salar) smolts from rivers across the uk and ireland |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1111/jfb.15884 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15884 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology ISSN 0022-1112 1095-8649 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/jfb.15884 |
container_title |
Journal of Fish Biology |
_version_ |
1810432183338270720 |