Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions
To improve stocking success in threatened populations, captive-reared animals are often familiarized to natural environment. However, whether such actions improve the ability to cope with multiple biological interactions, such as competition, predation, and parasitism that impose contradicting press...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0083 |
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crcansciencepubl:10.1139/cjfas-2023-0083 2024-03-03T08:42:50+00:00 Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions Karvonen, Anssi Klemme, Ines Räihä, Ville Hyvärinen, Pekka 2023 http://dx.doi.org/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0083 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 80, issue 11, page 1759-1769 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2023 crcansciencepubl https://doi.org/10.1139/cjfas-2023-0083 2024-02-07T10:53:34Z To improve stocking success in threatened populations, captive-reared animals are often familiarized to natural environment. However, whether such actions improve the ability to cope with multiple biological interactions, such as competition, predation, and parasitism that impose contradicting pressures on decision-making, is not well understood. Here, we explored short-term (4 weeks) and long-term (10 months) effects of enriched rearing on fitness-related traits of Atlantic salmon ( Salmo salar). Salmon with different backgrounds of enrichment and parasite infection (eye fluke Diplostomum pseudospathaceum) were released to semi-natural ponds and monitored for activity, growth, and predation susceptibility. Fish from enriched rearing showed lower short-term activity and higher short-term growth, suggesting that they coped better with novel conditions. However, predation susceptibility and longer-term growth and survival were unaffected by rearing treatment. Importantly, parasitism did not remove the positive effect of enrichment on growth, although the infection decreased both short-term and long-term growth and survival. These results suggest that enriched rearing can enhance fitness-related traits, such as growth, of stocked fish, particularly during the critical early days, which can have important implications for stock enhancement activities. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 80 11 1759 1769 |
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Canadian Science Publishing |
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English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Karvonen, Anssi Klemme, Ines Räihä, Ville Hyvärinen, Pekka Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
To improve stocking success in threatened populations, captive-reared animals are often familiarized to natural environment. However, whether such actions improve the ability to cope with multiple biological interactions, such as competition, predation, and parasitism that impose contradicting pressures on decision-making, is not well understood. Here, we explored short-term (4 weeks) and long-term (10 months) effects of enriched rearing on fitness-related traits of Atlantic salmon ( Salmo salar). Salmon with different backgrounds of enrichment and parasite infection (eye fluke Diplostomum pseudospathaceum) were released to semi-natural ponds and monitored for activity, growth, and predation susceptibility. Fish from enriched rearing showed lower short-term activity and higher short-term growth, suggesting that they coped better with novel conditions. However, predation susceptibility and longer-term growth and survival were unaffected by rearing treatment. Importantly, parasitism did not remove the positive effect of enrichment on growth, although the infection decreased both short-term and long-term growth and survival. These results suggest that enriched rearing can enhance fitness-related traits, such as growth, of stocked fish, particularly during the critical early days, which can have important implications for stock enhancement activities. |
format |
Article in Journal/Newspaper |
author |
Karvonen, Anssi Klemme, Ines Räihä, Ville Hyvärinen, Pekka |
author_facet |
Karvonen, Anssi Klemme, Ines Räihä, Ville Hyvärinen, Pekka |
author_sort |
Karvonen, Anssi |
title |
Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
title_short |
Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
title_full |
Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
title_fullStr |
Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
title_full_unstemmed |
Enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
title_sort |
enriched rearing environment enhances fitness-related traits of salmonid fishes facing multiple biological interactions |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2023-0083 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2023-0083 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 80, issue 11, page 1759-1769 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2023-0083 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
80 |
container_issue |
11 |
container_start_page |
1759 |
op_container_end_page |
1769 |
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1792498296279793664 |