The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.)
The combined effects of stocking density and sustained exercise on the behaviour and food intake – growth relationship of individually tagged juvenile Arctic charr (Salvelinus alpinus L.) were examined. Both food intake and growth (weight gain) were significantly lower in fish stocked at the high de...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1992
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Online Access: | http://dx.doi.org/10.1139/z92-017 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-017 |
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crcansciencepubl:10.1139/z92-017 2023-12-17T10:23:45+01:00 The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) Christiansen, Jørgen Schou Svendsen, Yngvar Stavset Jobling, Malcolm 1992 http://dx.doi.org/10.1139/z92-017 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-017 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 70, issue 1, page 115-122 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1992 crcansciencepubl https://doi.org/10.1139/z92-017 2023-11-19T13:39:17Z The combined effects of stocking density and sustained exercise on the behaviour and food intake – growth relationship of individually tagged juvenile Arctic charr (Salvelinus alpinus L.) were examined. Both food intake and growth (weight gain) were significantly lower in fish stocked at the high density (initial biomass ~47 kg∙m −3 ) than in fish stocked at the low density (initial biomass ~23 kg∙m −3 ). When the charr stocked at low densities were subjected to sustained exercise, they showed higher growth rates than fish reared in standing water (control). In contrast, exercise did not give rise to improved growth performance in fish stocked at high densities. The growth – food intake ratio (food utilization) differed markedly between control and exercised fish. Irrespective of stocking density, food utilization was significantly better in exercising fish than in fish reared in standing water. The differences in food intake, growth, and food utilization are discussed in relation to the changes in behaviour and social interactions induced by forcing the fish to swim against a water current. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Zoology 70 1 115 122 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Christiansen, Jørgen Schou Svendsen, Yngvar Stavset Jobling, Malcolm The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The combined effects of stocking density and sustained exercise on the behaviour and food intake – growth relationship of individually tagged juvenile Arctic charr (Salvelinus alpinus L.) were examined. Both food intake and growth (weight gain) were significantly lower in fish stocked at the high density (initial biomass ~47 kg∙m −3 ) than in fish stocked at the low density (initial biomass ~23 kg∙m −3 ). When the charr stocked at low densities were subjected to sustained exercise, they showed higher growth rates than fish reared in standing water (control). In contrast, exercise did not give rise to improved growth performance in fish stocked at high densities. The growth – food intake ratio (food utilization) differed markedly between control and exercised fish. Irrespective of stocking density, food utilization was significantly better in exercising fish than in fish reared in standing water. The differences in food intake, growth, and food utilization are discussed in relation to the changes in behaviour and social interactions induced by forcing the fish to swim against a water current. |
format |
Article in Journal/Newspaper |
author |
Christiansen, Jørgen Schou Svendsen, Yngvar Stavset Jobling, Malcolm |
author_facet |
Christiansen, Jørgen Schou Svendsen, Yngvar Stavset Jobling, Malcolm |
author_sort |
Christiansen, Jørgen Schou |
title |
The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
title_short |
The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
title_full |
The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
title_fullStr |
The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
title_full_unstemmed |
The combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile Arctic charr ( Salvelinus alpinus L.) |
title_sort |
combined effects of stocking density and sustained exercise on the behaviour, food intake, and growth of juvenile arctic charr ( salvelinus alpinus l.) |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/z92-017 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-017 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Canadian Journal of Zoology volume 70, issue 1, page 115-122 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z92-017 |
container_title |
Canadian Journal of Zoology |
container_volume |
70 |
container_issue |
1 |
container_start_page |
115 |
op_container_end_page |
122 |
_version_ |
1785560079714484224 |