Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean
Variation in circulus spacing on scales of wild Atlantic salmon is indicative of changes in body length growth rate. We analyzed scale circulus spacing during the post-smolt growth period for adult one sea-winter salmon (n = 1947) returning to Scotland over the period 1993-2011. Growth pattern of sc...
Published in: | Journal of Fish Biology |
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2021
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Online Access: | https://orbit.dtu.dk/en/publications/a676f2e7-287d-4be0-ab19-27ec9a115270 https://doi.org/10.1111/jfb.14552 https://backend.orbit.dtu.dk/ws/files/221498143/ansa_jfb.14552.pdf https://backend.orbit.dtu.dk/ws/files/241727172/jfb.14552.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/a676f2e7-287d-4be0-ab19-27ec9a115270 2024-06-23T07:51:24+00:00 Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean Todd, Christopher D Hanson, Nora N Boehme, Lars Revie, Crawford W Marques, Ana Rita Pinheiro 2021 application/pdf https://orbit.dtu.dk/en/publications/a676f2e7-287d-4be0-ab19-27ec9a115270 https://doi.org/10.1111/jfb.14552 https://backend.orbit.dtu.dk/ws/files/221498143/ansa_jfb.14552.pdf https://backend.orbit.dtu.dk/ws/files/241727172/jfb.14552.pdf eng eng https://orbit.dtu.dk/en/publications/a676f2e7-287d-4be0-ab19-27ec9a115270 info:eu-repo/semantics/openAccess Todd , C D , Hanson , N N , Boehme , L , Revie , C W & Marques , A R P 2021 , ' Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean ' , Journal of Fish Biology , vol. 98 , no. 1 , pp. 6-16 . https://doi.org/10.1111/jfb.14552 article 2021 ftdtupubl https://doi.org/10.1111/jfb.14552 2024-06-11T14:55:44Z Variation in circulus spacing on scales of wild Atlantic salmon is indicative of changes in body length growth rate. We analyzed scale circulus spacing during the post-smolt growth period for adult one sea-winter salmon (n = 1947) returning to Scotland over the period 1993-2011. Growth pattern of scales was subjectively and visually categorized according to the occurrence and zonal sequence of three inter-circulus spacing criteria ("Slow", "Fast" and "Check" zones). We applied hierarchical time-series cluster analysis to the empirical circulus spacing data, followed by post hoc analysis of significant changes in growth patterns within the identified 20 clusters. Temporal changes in growth pattern frequencies showed significant correlation with sea surface temperature anomalies during the early months of the post-smolt growth season and throughout the Norwegian Sea. Since the turn of millennium, we observed: (i) a marked decrease in the occurrence of continuous Fast growth, and increased frequencies of fish showing (ii) an extended period of initially Slow growth, and (iii) the occurrence of obvious growth Checks, or hiatuses. These changes in post-smolt growth pattern were manifest also in decreases in the mean body length attained by the ocean midwinter, as sea surface temperatures have risen. Article in Journal/Newspaper Atlantic salmon North Atlantic Norwegian Sea Salmo salar Technical University of Denmark: DTU Orbit Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Norwegian Sea Journal of Fish Biology 98 1 6 16 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Variation in circulus spacing on scales of wild Atlantic salmon is indicative of changes in body length growth rate. We analyzed scale circulus spacing during the post-smolt growth period for adult one sea-winter salmon (n = 1947) returning to Scotland over the period 1993-2011. Growth pattern of scales was subjectively and visually categorized according to the occurrence and zonal sequence of three inter-circulus spacing criteria ("Slow", "Fast" and "Check" zones). We applied hierarchical time-series cluster analysis to the empirical circulus spacing data, followed by post hoc analysis of significant changes in growth patterns within the identified 20 clusters. Temporal changes in growth pattern frequencies showed significant correlation with sea surface temperature anomalies during the early months of the post-smolt growth season and throughout the Norwegian Sea. Since the turn of millennium, we observed: (i) a marked decrease in the occurrence of continuous Fast growth, and increased frequencies of fish showing (ii) an extended period of initially Slow growth, and (iii) the occurrence of obvious growth Checks, or hiatuses. These changes in post-smolt growth pattern were manifest also in decreases in the mean body length attained by the ocean midwinter, as sea surface temperatures have risen. |
format |
Article in Journal/Newspaper |
author |
Todd, Christopher D Hanson, Nora N Boehme, Lars Revie, Crawford W Marques, Ana Rita Pinheiro |
spellingShingle |
Todd, Christopher D Hanson, Nora N Boehme, Lars Revie, Crawford W Marques, Ana Rita Pinheiro Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
author_facet |
Todd, Christopher D Hanson, Nora N Boehme, Lars Revie, Crawford W Marques, Ana Rita Pinheiro |
author_sort |
Todd, Christopher D |
title |
Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
title_short |
Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
title_full |
Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
title_fullStr |
Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
title_full_unstemmed |
Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean |
title_sort |
variation in post-smolt growth pattern of wild one sea-winter salmon (salmo salar l.), and its linkage to surface warming in the eastern north atlantic ocean |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/a676f2e7-287d-4be0-ab19-27ec9a115270 https://doi.org/10.1111/jfb.14552 https://backend.orbit.dtu.dk/ws/files/221498143/ansa_jfb.14552.pdf https://backend.orbit.dtu.dk/ws/files/241727172/jfb.14552.pdf |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Midwinter Norwegian Sea |
geographic_facet |
Midwinter Norwegian Sea |
genre |
Atlantic salmon North Atlantic Norwegian Sea Salmo salar |
genre_facet |
Atlantic salmon North Atlantic Norwegian Sea Salmo salar |
op_source |
Todd , C D , Hanson , N N , Boehme , L , Revie , C W & Marques , A R P 2021 , ' Variation in post-smolt growth pattern of wild one sea-winter salmon (Salmo salar L.), and its linkage to surface warming in the eastern North Atlantic Ocean ' , Journal of Fish Biology , vol. 98 , no. 1 , pp. 6-16 . https://doi.org/10.1111/jfb.14552 |
op_relation |
https://orbit.dtu.dk/en/publications/a676f2e7-287d-4be0-ab19-27ec9a115270 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/jfb.14552 |
container_title |
Journal of Fish Biology |
container_volume |
98 |
container_issue |
1 |
container_start_page |
6 |
op_container_end_page |
16 |
_version_ |
1802642480519184384 |