Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr
Abstract – After release to the wild, captive reared salmon have shown lower foraging rates on natural prey and impaired ability to avoid natural predators and thus lower survival compared with wild‐born conspecifics. Here, we examine whether captive breeding influences learning of foraging on natur...
Published in: | Ecology of Freshwater Fish |
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Language: | English |
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crwiley:10.1111/j.1600-0633.2011.00505.x 2024-06-23T07:51:16+00:00 Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr Rodewald, Petra Hyvärinen, Pekka Hirvonen, Heikki 2011 http://dx.doi.org/10.1111/j.1600-0633.2011.00505.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2011.00505.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2011.00505.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 20, issue 4, page 569-579 ISSN 0906-6691 1600-0633 journal-article 2011 crwiley https://doi.org/10.1111/j.1600-0633.2011.00505.x 2024-06-11T04:44:26Z Abstract – After release to the wild, captive reared salmon have shown lower foraging rates on natural prey and impaired ability to avoid natural predators and thus lower survival compared with wild‐born conspecifics. Here, we examine whether captive breeding influences learning of foraging on natural prey and how enriched rearing methods may improve foraging on natural prey by Atlantic salmon ( Salmo salar ) parr. We reared offspring of hatchery or wild salmon of the same population in either a standard or enriched environment at production‐scale densities. The enriched environment featured submerged overhead shelter, varying water current, depth and direction and consequently alterations in food dispersion. Parr reared in the enriched environment expressed higher feeding rates, and parr of wild origin started to forage earlier on natural prey. The enriched method promoted foraging of hatchery reared parr on natural prey and is easily applicable to commercial production of salmonids for reintroduction or stock enhancement purposes. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Ecology of Freshwater Fish 20 4 569 579 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract – After release to the wild, captive reared salmon have shown lower foraging rates on natural prey and impaired ability to avoid natural predators and thus lower survival compared with wild‐born conspecifics. Here, we examine whether captive breeding influences learning of foraging on natural prey and how enriched rearing methods may improve foraging on natural prey by Atlantic salmon ( Salmo salar ) parr. We reared offspring of hatchery or wild salmon of the same population in either a standard or enriched environment at production‐scale densities. The enriched environment featured submerged overhead shelter, varying water current, depth and direction and consequently alterations in food dispersion. Parr reared in the enriched environment expressed higher feeding rates, and parr of wild origin started to forage earlier on natural prey. The enriched method promoted foraging of hatchery reared parr on natural prey and is easily applicable to commercial production of salmonids for reintroduction or stock enhancement purposes. |
format |
Article in Journal/Newspaper |
author |
Rodewald, Petra Hyvärinen, Pekka Hirvonen, Heikki |
spellingShingle |
Rodewald, Petra Hyvärinen, Pekka Hirvonen, Heikki Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
author_facet |
Rodewald, Petra Hyvärinen, Pekka Hirvonen, Heikki |
author_sort |
Rodewald, Petra |
title |
Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
title_short |
Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
title_full |
Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
title_fullStr |
Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
title_full_unstemmed |
Wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared Atlantic salmon parr |
title_sort |
wild origin and enriched environment promote foraging rate and learning to forage on natural prey of captive reared atlantic salmon parr |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2011.00505.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2011.00505.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2011.00505.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology of Freshwater Fish volume 20, issue 4, page 569-579 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2011.00505.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
20 |
container_issue |
4 |
container_start_page |
569 |
op_container_end_page |
579 |
_version_ |
1802642312158773248 |