Time Learning and Anticipatory Activity in Groups of Arctic Charr
Abstract Time learning and anticipatory activity were studied in five groups of 16–17 Arctic charr ( Salvelinus alpinus ) using self‐feeding devices with individual recognition (PIT (Passive Integrated Transponders)‐tags). The fish were kept under a LD 12:12 h cycle and periods of free access to the...
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crwiley:10.1111/j.1439-0310.2005.01094.x 2024-09-15T17:52:21+00:00 Time Learning and Anticipatory Activity in Groups of Arctic Charr Brännäs, Eva Berglund, Ulf Eriksson, Lars‐Ove 2005 http://dx.doi.org/10.1111/j.1439-0310.2005.01094.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1439-0310.2005.01094.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1439-0310.2005.01094.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ethology volume 111, issue 7, page 681-692 ISSN 0179-1613 1439-0310 journal-article 2005 crwiley https://doi.org/10.1111/j.1439-0310.2005.01094.x 2024-08-06T04:20:47Z Abstract Time learning and anticipatory activity were studied in five groups of 16–17 Arctic charr ( Salvelinus alpinus ) using self‐feeding devices with individual recognition (PIT (Passive Integrated Transponders)‐tags). The fish were kept under a LD 12:12 h cycle and periods of free access to the food were alternated with periods of time‐limited (2 h) access to food. Self‐feeding activity was significantly related to the light period in unrestricted conditions while related to the feeding periods during time‐limited access to food. The fish learned to concentrate their feeding activity to the restricted mealtime (>50% of the daily self‐feeding activity) within 10 d. The food anticipatory activity, measured as an increased self‐feeding activity before the feeding time and as aggressive interactions close to the trigger, was significant in both cases. The dominant individuals increased the trigger activity in advance of the time‐restricted reward period and subdominant individuals approached the trigger also in advance, inducing aggressive interactions. Thus, anticipating and learning a temporally predictable food source was pronounced in groups of self‐feeding Arctic charr. Article in Journal/Newspaper Arctic charr Salvelinus alpinus Wiley Online Library Ethology 111 7 681 692 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Time learning and anticipatory activity were studied in five groups of 16–17 Arctic charr ( Salvelinus alpinus ) using self‐feeding devices with individual recognition (PIT (Passive Integrated Transponders)‐tags). The fish were kept under a LD 12:12 h cycle and periods of free access to the food were alternated with periods of time‐limited (2 h) access to food. Self‐feeding activity was significantly related to the light period in unrestricted conditions while related to the feeding periods during time‐limited access to food. The fish learned to concentrate their feeding activity to the restricted mealtime (>50% of the daily self‐feeding activity) within 10 d. The food anticipatory activity, measured as an increased self‐feeding activity before the feeding time and as aggressive interactions close to the trigger, was significant in both cases. The dominant individuals increased the trigger activity in advance of the time‐restricted reward period and subdominant individuals approached the trigger also in advance, inducing aggressive interactions. Thus, anticipating and learning a temporally predictable food source was pronounced in groups of self‐feeding Arctic charr. |
format |
Article in Journal/Newspaper |
author |
Brännäs, Eva Berglund, Ulf Eriksson, Lars‐Ove |
spellingShingle |
Brännäs, Eva Berglund, Ulf Eriksson, Lars‐Ove Time Learning and Anticipatory Activity in Groups of Arctic Charr |
author_facet |
Brännäs, Eva Berglund, Ulf Eriksson, Lars‐Ove |
author_sort |
Brännäs, Eva |
title |
Time Learning and Anticipatory Activity in Groups of Arctic Charr |
title_short |
Time Learning and Anticipatory Activity in Groups of Arctic Charr |
title_full |
Time Learning and Anticipatory Activity in Groups of Arctic Charr |
title_fullStr |
Time Learning and Anticipatory Activity in Groups of Arctic Charr |
title_full_unstemmed |
Time Learning and Anticipatory Activity in Groups of Arctic Charr |
title_sort |
time learning and anticipatory activity in groups of arctic charr |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1439-0310.2005.01094.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1439-0310.2005.01094.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1439-0310.2005.01094.x |
genre |
Arctic charr Salvelinus alpinus |
genre_facet |
Arctic charr Salvelinus alpinus |
op_source |
Ethology volume 111, issue 7, page 681-692 ISSN 0179-1613 1439-0310 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1439-0310.2005.01094.x |
container_title |
Ethology |
container_volume |
111 |
container_issue |
7 |
container_start_page |
681 |
op_container_end_page |
692 |
_version_ |
1810294400893321216 |