Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus
Abstract Intraspecific competition plays a significant role in shaping how animals use and share habitats in space and time. However, the way individuals may modify their diel activity in response to increased competition has received limited attention. We used juvenile (age 1+) Arctic charr Salveli...
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crwiley:10.1002/ece3.2177 2024-03-17T08:55:09+00:00 Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus Fingerle, Amy Larranaga, Nicolas Steingrímsson, Stefán Óli Icelandic Centre for Research 2016 http://dx.doi.org/10.1002/ece3.2177 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2177 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2177 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2177 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 6, issue 12, page 3965-3976 ISSN 2045-7758 2045-7758 Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics journal-article 2016 crwiley https://doi.org/10.1002/ece3.2177 2024-02-22T01:00:36Z Abstract Intraspecific competition plays a significant role in shaping how animals use and share habitats in space and time. However, the way individuals may modify their diel activity in response to increased competition has received limited attention. We used juvenile (age 1+) Arctic charr Salvelinus alpinus to test the prediction that individuals at high population density are more active and distribute their foraging activity over a greater portion of the 24‐h cycle than individuals at low population density. Individually tagged fish were stocked in seminatural stream enclosures at low (2 fish/m 2 ) and high (6 fish/m 2 ) density. During each of two 2‐week experimental rounds, activity of all fish within each enclosure was recorded every 3 h over seven 24‐h cycles. At high density, fish were more active and distributed their activity over a greater portion of the 24‐h cycle, with increased activity particularly at crepuscular times. Fluctuations in ecological conditions (e.g., water temperature and light intensity) also affected activity. Fish at high density grew as fast as fish at low density. This study demonstrates that individuals exhibit a degree of behavioral flexibility in their response to changes in ecological conditions and suggests that intraspecific competition can cause animals to modify temporal aspects of their activity to gain access to resources and maintain growth. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library Arctic Ecology and Evolution 6 12 3965 3976 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Fingerle, Amy Larranaga, Nicolas Steingrímsson, Stefán Óli Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
topic_facet |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Intraspecific competition plays a significant role in shaping how animals use and share habitats in space and time. However, the way individuals may modify their diel activity in response to increased competition has received limited attention. We used juvenile (age 1+) Arctic charr Salvelinus alpinus to test the prediction that individuals at high population density are more active and distribute their foraging activity over a greater portion of the 24‐h cycle than individuals at low population density. Individually tagged fish were stocked in seminatural stream enclosures at low (2 fish/m 2 ) and high (6 fish/m 2 ) density. During each of two 2‐week experimental rounds, activity of all fish within each enclosure was recorded every 3 h over seven 24‐h cycles. At high density, fish were more active and distributed their activity over a greater portion of the 24‐h cycle, with increased activity particularly at crepuscular times. Fluctuations in ecological conditions (e.g., water temperature and light intensity) also affected activity. Fish at high density grew as fast as fish at low density. This study demonstrates that individuals exhibit a degree of behavioral flexibility in their response to changes in ecological conditions and suggests that intraspecific competition can cause animals to modify temporal aspects of their activity to gain access to resources and maintain growth. |
author2 |
Icelandic Centre for Research |
format |
Article in Journal/Newspaper |
author |
Fingerle, Amy Larranaga, Nicolas Steingrímsson, Stefán Óli |
author_facet |
Fingerle, Amy Larranaga, Nicolas Steingrímsson, Stefán Óli |
author_sort |
Fingerle, Amy |
title |
Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
title_short |
Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
title_full |
Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
title_fullStr |
Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
title_full_unstemmed |
Density‐dependent diel activity in stream‐dwelling Arctic charr Salvelinus alpinus |
title_sort |
density‐dependent diel activity in stream‐dwelling arctic charr salvelinus alpinus |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/ece3.2177 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2177 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2177 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2177 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Ecology and Evolution volume 6, issue 12, page 3965-3976 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.2177 |
container_title |
Ecology and Evolution |
container_volume |
6 |
container_issue |
12 |
container_start_page |
3965 |
op_container_end_page |
3976 |
_version_ |
1793763515007238144 |