Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar
The diet of repeat‐spawner Atlantic salmon Salmo salar was investigated using carbon and nitrogen stable‐isotope values from the outer growth band of scales, which reflect the fish's consumption and growth during their most recent marine phase. Isotope values for S. salar displaying different s...
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crwiley:10.1111/jfb.13846 2023-12-03T10:19:32+01:00 Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar Kelly, Brianne Benoît, Hugues P. Chaput, Gerald Jones, Ross A. Power, Michael Fisheries and Oceans Canada's International Governance Strategy program 2019 http://dx.doi.org/10.1111/jfb.13846 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13846 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13846 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 94, issue 1, page 40-52 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2019 crwiley https://doi.org/10.1111/jfb.13846 2023-11-09T14:14:28Z The diet of repeat‐spawner Atlantic salmon Salmo salar was investigated using carbon and nitrogen stable‐isotope values from the outer growth band of scales, which reflect the fish's consumption and growth during their most recent marine phase. Isotope values for S. salar displaying different spawning strategies were compared between and within the Miramichi and Nashwaak Rivers, New Brunswick, Canada and a Bayesian mixing model was used to infer dietary contributions from potential prey items. Significant differences in the stable‐isotope values were found among spawning strategies and between rivers, indicating differences in diet and feeding area, consistent with hypotheses. Bayesian mixing model results inferred the main prey items consumed during marine feeding by S. salar to consist of hyperiid amphipods and capelin Mallotus villosus for repeat alternate spawners from both rivers, sandlance Ammodytes sp. for repeat consecutive spawners from the Miramichi River and amphipods for repeat consecutive spawners from the Nashwaak River. These results demonstrate the diversity of feeding tactics among S. salar spawning strategies from the same river and between populations from different rivers. Accounting for differences in prey availability and the subsequent impact on S. salar diet and spawner return rates ( i.e., marine survival) will facilitate the application of ecosystem‐based management practices, such as ensuring that fisheries for forage species do not indirectly adversely affect S. salar return rates. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library (via Crossref) Canada Journal of Fish Biology 94 1 40 52 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Kelly, Brianne Benoît, Hugues P. Chaput, Gerald Jones, Ross A. Power, Michael Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The diet of repeat‐spawner Atlantic salmon Salmo salar was investigated using carbon and nitrogen stable‐isotope values from the outer growth band of scales, which reflect the fish's consumption and growth during their most recent marine phase. Isotope values for S. salar displaying different spawning strategies were compared between and within the Miramichi and Nashwaak Rivers, New Brunswick, Canada and a Bayesian mixing model was used to infer dietary contributions from potential prey items. Significant differences in the stable‐isotope values were found among spawning strategies and between rivers, indicating differences in diet and feeding area, consistent with hypotheses. Bayesian mixing model results inferred the main prey items consumed during marine feeding by S. salar to consist of hyperiid amphipods and capelin Mallotus villosus for repeat alternate spawners from both rivers, sandlance Ammodytes sp. for repeat consecutive spawners from the Miramichi River and amphipods for repeat consecutive spawners from the Nashwaak River. These results demonstrate the diversity of feeding tactics among S. salar spawning strategies from the same river and between populations from different rivers. Accounting for differences in prey availability and the subsequent impact on S. salar diet and spawner return rates ( i.e., marine survival) will facilitate the application of ecosystem‐based management practices, such as ensuring that fisheries for forage species do not indirectly adversely affect S. salar return rates. |
author2 |
Fisheries and Oceans Canada's International Governance Strategy program |
format |
Article in Journal/Newspaper |
author |
Kelly, Brianne Benoît, Hugues P. Chaput, Gerald Jones, Ross A. Power, Michael |
author_facet |
Kelly, Brianne Benoît, Hugues P. Chaput, Gerald Jones, Ross A. Power, Michael |
author_sort |
Kelly, Brianne |
title |
Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
title_short |
Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
title_full |
Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
title_fullStr |
Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
title_full_unstemmed |
Spawning‐strategy‐dependent diets in two North American populations of Atlantic salmon Salmo salar |
title_sort |
spawning‐strategy‐dependent diets in two north american populations of atlantic salmon salmo salar |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/jfb.13846 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13846 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13846 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 94, issue 1, page 40-52 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.13846 |
container_title |
Journal of Fish Biology |
container_volume |
94 |
container_issue |
1 |
container_start_page |
40 |
op_container_end_page |
52 |
_version_ |
1784266848767836160 |