Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge
The relationship among relative size, growth rate and diel visits into a feeding compartment were studied in Arctic charr Salvelinus alpinus , a species known for its flexible activity patterns. Individual swimming activity from a refuge compartment into an uncovered feeding compartment was studied...
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crwiley:10.1111/j.1095-8649.2008.01941.x 2024-06-02T08:00:05+00:00 Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge Brännäs, E. 2008 http://dx.doi.org/10.1111/j.1095-8649.2008.01941.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2008.01941.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2008.01941.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 73, issue 3, page 524-535 ISSN 0022-1112 1095-8649 journal-article 2008 crwiley https://doi.org/10.1111/j.1095-8649.2008.01941.x 2024-05-03T11:26:34Z The relationship among relative size, growth rate and diel visits into a feeding compartment were studied in Arctic charr Salvelinus alpinus , a species known for its flexible activity patterns. Individual swimming activity from a refuge compartment into an uncovered feeding compartment was studied using an automated passive integrated transponder system. Approximately half of the individuals in four groups of S. alpinus spent 70–80% of their time in the feeding compartment, regardless of the time of day. The remaining individuals spent nearly as much time (70–80%) in the feeding compartment during the night, but only spent c. 20% of their time in the feeding compartment during the day. These individuals had a lower mean ± s . d . masses (13·17 ± 4·34 g) and growth rate (daily growth coefficient, G = 0·80 ± 1·19) than those individuals that spent most of their time in the feeding compartment during the day (mass = 16·65 ± 5·73 g and G = 2·04 ± 0·81). This indicated that some smaller fish were absent from the feeding compartment during daytime, possibly to avoid aggression from larger conspecifics. In the open compartment, the aggressive interactions were more frequent in daylight than during night and always low in the covered compartment. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library Arctic Journal of Fish Biology 73 3 524 535 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
The relationship among relative size, growth rate and diel visits into a feeding compartment were studied in Arctic charr Salvelinus alpinus , a species known for its flexible activity patterns. Individual swimming activity from a refuge compartment into an uncovered feeding compartment was studied using an automated passive integrated transponder system. Approximately half of the individuals in four groups of S. alpinus spent 70–80% of their time in the feeding compartment, regardless of the time of day. The remaining individuals spent nearly as much time (70–80%) in the feeding compartment during the night, but only spent c. 20% of their time in the feeding compartment during the day. These individuals had a lower mean ± s . d . masses (13·17 ± 4·34 g) and growth rate (daily growth coefficient, G = 0·80 ± 1·19) than those individuals that spent most of their time in the feeding compartment during the day (mass = 16·65 ± 5·73 g and G = 2·04 ± 0·81). This indicated that some smaller fish were absent from the feeding compartment during daytime, possibly to avoid aggression from larger conspecifics. In the open compartment, the aggressive interactions were more frequent in daylight than during night and always low in the covered compartment. |
format |
Article in Journal/Newspaper |
author |
Brännäs, E. |
spellingShingle |
Brännäs, E. Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
author_facet |
Brännäs, E. |
author_sort |
Brännäs, E. |
title |
Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
title_short |
Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
title_full |
Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
title_fullStr |
Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
title_full_unstemmed |
Temporal resource partitioning varies with individual competitive ability: a test with Arctic charr Salvelinus alpinus visiting a feeding site from a refuge |
title_sort |
temporal resource partitioning varies with individual competitive ability: a test with arctic charr salvelinus alpinus visiting a feeding site from a refuge |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2008.01941.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2008.01941.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2008.01941.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 73, issue 3, page 524-535 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2008.01941.x |
container_title |
Journal of Fish Biology |
container_volume |
73 |
container_issue |
3 |
container_start_page |
524 |
op_container_end_page |
535 |
_version_ |
1800744097278853120 |