Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use
The magnitude of variation of diel activity patterns and habitat use of wild Atlantic salmon (Salmo salar) parr was examined during the summer and autumn through a gradient of declining temperature. Fish were marked with passive integrated transponders and tracked using a large network of flatbed an...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0274 |
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crcansciencepubl:10.1139/cjfas-2012-0274 2024-04-07T07:51:06+00:00 Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use Roy, Mathieu L. Roy, André G. Grant, James W.A. Bergeron, Normand E. 2013 http://dx.doi.org/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0274 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 7, page 1082-1091 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjfas-2012-0274 2024-03-08T00:37:42Z The magnitude of variation of diel activity patterns and habitat use of wild Atlantic salmon (Salmo salar) parr was examined during the summer and autumn through a gradient of declining temperature. Fish were marked with passive integrated transponders and tracked using a large network of flatbed antennas. High interindividual variability was observed, as some individuals were predominantly nocturnal whereas others frequently changed their daily activity pattern. Overall fish activity decreased with decreasing temperature and increasing flow stage, but most of these changes in daily activity were observed in crepuscular periods. Parr used habitats with lower velocity at night than in the day during the summer, but not in the autumn. Furthermore, there was no difference between day and night habitats for fish that were cathemeral (active both day and night during a given day), so differences between day and night habitats were the result of individuals adopting different activity patterns. These results suggest that habitat interacts with activity pattern, as individuals using suboptimal habitats seem to increase daytime foraging to secure sufficient energy. Temporal and among-fish variability of activity patterns illustrate the dynamic nature of foraging decisions that may partly result from trade-offs experienced at the microhabitat scale. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 70 7 1082 1091 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Roy, Mathieu L. Roy, André G. Grant, James W.A. Bergeron, Normand E. Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The magnitude of variation of diel activity patterns and habitat use of wild Atlantic salmon (Salmo salar) parr was examined during the summer and autumn through a gradient of declining temperature. Fish were marked with passive integrated transponders and tracked using a large network of flatbed antennas. High interindividual variability was observed, as some individuals were predominantly nocturnal whereas others frequently changed their daily activity pattern. Overall fish activity decreased with decreasing temperature and increasing flow stage, but most of these changes in daily activity were observed in crepuscular periods. Parr used habitats with lower velocity at night than in the day during the summer, but not in the autumn. Furthermore, there was no difference between day and night habitats for fish that were cathemeral (active both day and night during a given day), so differences between day and night habitats were the result of individuals adopting different activity patterns. These results suggest that habitat interacts with activity pattern, as individuals using suboptimal habitats seem to increase daytime foraging to secure sufficient energy. Temporal and among-fish variability of activity patterns illustrate the dynamic nature of foraging decisions that may partly result from trade-offs experienced at the microhabitat scale. |
format |
Article in Journal/Newspaper |
author |
Roy, Mathieu L. Roy, André G. Grant, James W.A. Bergeron, Normand E. |
author_facet |
Roy, Mathieu L. Roy, André G. Grant, James W.A. Bergeron, Normand E. |
author_sort |
Roy, Mathieu L. |
title |
Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
title_short |
Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
title_full |
Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
title_fullStr |
Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
title_full_unstemmed |
Individual variability of wild juvenile Atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
title_sort |
individual variability of wild juvenile atlantic salmon activity patterns: effect of flow stage, temperature, and habitat use |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0274 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0274 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 7, page 1082-1091 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2012-0274 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
70 |
container_issue |
7 |
container_start_page |
1082 |
op_container_end_page |
1091 |
_version_ |
1795665950801920000 |