A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe
Abstract This study provides a regional picture of long‐term changes in Atlantic salmon growth at the southern edge of their distribution, using a multi‐population approach spanning 49 years and five populations. We provide empirical evidence of salmon life history being influenced by a combination...
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Online Access: | http://dx.doi.org/10.1111/jfb.15567 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15567 |
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crwiley:10.1111/jfb.15567 2024-09-15T17:56:22+00:00 A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe Tréhin, Cécile Rivot, Etienne Santanbien, Valentin Patin, Rémi Gregory, Stephen D. Lamireau, Ludivine Marchand, Frédéric Beaumont, William R. C. Scott, Luke J. Hillman, Robert Besnard, Anne‐Laure Boisson, Pierre‐Yves Meslier, Lisa King, Andrew R. Stevens, Jamie R. Nevoux, Marie 2023 http://dx.doi.org/10.1111/jfb.15567 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15567 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 104, issue 1, page 125-138 ISSN 0022-1112 1095-8649 journal-article 2023 crwiley https://doi.org/10.1111/jfb.15567 2024-08-22T04:15:31Z Abstract This study provides a regional picture of long‐term changes in Atlantic salmon growth at the southern edge of their distribution, using a multi‐population approach spanning 49 years and five populations. We provide empirical evidence of salmon life history being influenced by a combination of common signals in the marine environment and population‐specific signals. We identified an abrupt decline in growth from 1976 and a more recent decline after 2005. As these declines have also been recorded in northern European populations, our study significantly expands a pattern of declining marine growth to include southern European populations, thereby revealing a large‐scale synchrony in marine growth patterns for almost five decades. Growth increments during their sea sojourn were characterized by distinct temporal dynamics. At a coarse temporal resolution, growth during the first winter at sea seemed to gradually improve over the study period. However, the analysis of finer seasonal growth patterns revealed ecological bottlenecks of salmon life histories at sea in time and space. Our study reinforces existing evidence of an impact of early marine growth on maturation decision, with small‐sized individuals at the end of the first summer at sea being more likely to delay maturation. However, each population was characterized by a specific probabilistic maturation reaction norm, and a local component of growth at sea in which some populations have better growth in some years might further amplify differences in maturation rate. Differences between populations were smaller than those between sexes, suggesting that the sex‐specific growth threshold for maturation is a well‐conserved evolutionary phenomenon in salmon. Finally, our results illustrate that although most of the gain in length occurs during the first summer at sea, the temporal variability in body length at return is buffered against the decrease in post‐smolt growth conditions. The intricate combination of growth over successive seasons, and its ... Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology |
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English |
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Abstract This study provides a regional picture of long‐term changes in Atlantic salmon growth at the southern edge of their distribution, using a multi‐population approach spanning 49 years and five populations. We provide empirical evidence of salmon life history being influenced by a combination of common signals in the marine environment and population‐specific signals. We identified an abrupt decline in growth from 1976 and a more recent decline after 2005. As these declines have also been recorded in northern European populations, our study significantly expands a pattern of declining marine growth to include southern European populations, thereby revealing a large‐scale synchrony in marine growth patterns for almost five decades. Growth increments during their sea sojourn were characterized by distinct temporal dynamics. At a coarse temporal resolution, growth during the first winter at sea seemed to gradually improve over the study period. However, the analysis of finer seasonal growth patterns revealed ecological bottlenecks of salmon life histories at sea in time and space. Our study reinforces existing evidence of an impact of early marine growth on maturation decision, with small‐sized individuals at the end of the first summer at sea being more likely to delay maturation. However, each population was characterized by a specific probabilistic maturation reaction norm, and a local component of growth at sea in which some populations have better growth in some years might further amplify differences in maturation rate. Differences between populations were smaller than those between sexes, suggesting that the sex‐specific growth threshold for maturation is a well‐conserved evolutionary phenomenon in salmon. Finally, our results illustrate that although most of the gain in length occurs during the first summer at sea, the temporal variability in body length at return is buffered against the decrease in post‐smolt growth conditions. The intricate combination of growth over successive seasons, and its ... |
format |
Article in Journal/Newspaper |
author |
Tréhin, Cécile Rivot, Etienne Santanbien, Valentin Patin, Rémi Gregory, Stephen D. Lamireau, Ludivine Marchand, Frédéric Beaumont, William R. C. Scott, Luke J. Hillman, Robert Besnard, Anne‐Laure Boisson, Pierre‐Yves Meslier, Lisa King, Andrew R. Stevens, Jamie R. Nevoux, Marie |
spellingShingle |
Tréhin, Cécile Rivot, Etienne Santanbien, Valentin Patin, Rémi Gregory, Stephen D. Lamireau, Ludivine Marchand, Frédéric Beaumont, William R. C. Scott, Luke J. Hillman, Robert Besnard, Anne‐Laure Boisson, Pierre‐Yves Meslier, Lisa King, Andrew R. Stevens, Jamie R. Nevoux, Marie A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
author_facet |
Tréhin, Cécile Rivot, Etienne Santanbien, Valentin Patin, Rémi Gregory, Stephen D. Lamireau, Ludivine Marchand, Frédéric Beaumont, William R. C. Scott, Luke J. Hillman, Robert Besnard, Anne‐Laure Boisson, Pierre‐Yves Meslier, Lisa King, Andrew R. Stevens, Jamie R. Nevoux, Marie |
author_sort |
Tréhin, Cécile |
title |
A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
title_short |
A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
title_full |
A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
title_fullStr |
A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
title_full_unstemmed |
A multi‐population approach supports common patterns in marine growth and maturation decision in Atlantic salmon ( Salmo salar L.) from southern Europe |
title_sort |
multi‐population approach supports common patterns in marine growth and maturation decision in atlantic salmon ( salmo salar l.) from southern europe |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/jfb.15567 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.15567 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 104, issue 1, page 125-138 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.15567 |
container_title |
Journal of Fish Biology |
_version_ |
1810432569159712768 |