Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar
The goal of 'life skills training' is to improve survival of captive-reared animals after release to the wild. Our study tested the hypothesis that learned predator recognition in hatchery-reared fish is favoured at ecologically appropriate periods during ontogeny. We began by asking wheth...
Published in: | Animal Behaviour |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2008
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ontogenetic-learning-of-predator-recognition-in-hatcheryreared-atlantic-salmon-salmo-salar(492a550c-90a3-4d2a-8246-4b0937d9162c).html https://doi.org/10.1016/j.anbehav.2007.10.019 http://www.scopus.com/inward/record.url?scp=42049120484&partnerID=8YFLogxK |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/492a550c-90a3-4d2a-8246-4b0937d9162c 2023-05-15T15:31:04+02:00 Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar Hawkins, LA Magurran, Anne Elizabeth Armstrong, JD 2008-05 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ontogenetic-learning-of-predator-recognition-in-hatcheryreared-atlantic-salmon-salmo-salar(492a550c-90a3-4d2a-8246-4b0937d9162c).html https://doi.org/10.1016/j.anbehav.2007.10.019 http://www.scopus.com/inward/record.url?scp=42049120484&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Hawkins , LA , Magurran , A E & Armstrong , JD 2008 , ' Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar ' , Animal Behaviour , vol. 75 , pp. 1663-1671 . https://doi.org/10.1016/j.anbehav.2007.10.019 alarm substance Atlantic salmon classical conditioning innate behaviour life skills training opercular rate Salmo salar CHEMICAL CUES ANTIPREDATOR BEHAVIOR ACQUIRED PREDATOR OLFACTORY ORGAN CHINOOK SALMON RAINBOW-TROUT BROOK TROUT FISH RESPONSES SURVIVAL article 2008 ftunstandrewcris https://doi.org/10.1016/j.anbehav.2007.10.019 2021-12-26T14:14:38Z The goal of 'life skills training' is to improve survival of captive-reared animals after release to the wild. Our study tested the hypothesis that learned predator recognition in hatchery-reared fish is favoured at ecologically appropriate periods during ontogeny. We began by asking whether the innate response of Atlantic salmon to predator odour (from high- and low-risk predators) declines during hatchery rearing. Next, we used classical conditioning to assess the capacity of fish in different age groups to learn to recognize predator odour. The first experiment showed that innate predator recognition is retained by fish for at least 8 months in a hatchery environment. However, the response of 10- to 15-week-old salmon to predator odour was significantly greater than that of younger (3-week-old) or older (28- to 36-week-old). fish. This is consistent with a period of heightened receptivity to predator odour cues. The second experiment provided evidence for age-dependent learning because salmon aged 16-20 weeks showed learned predator recognition abilities, whereas 3-week-old fish relied on innate responses. The onset of learning occurred at the age when wild fish undergo a habitat shift that greatly increases their encounters with predators. Future attempts to improve predator recognition skills of fish should take greater account of life history and focus on the ontogenetic stage where learning is favoured. Crown Copyright (c) 2007 Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour. All rights reserved. Article in Journal/Newspaper Atlantic salmon Salmo salar University of St Andrews: Research Portal Animal Behaviour 75 5 1663 1671 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
alarm substance Atlantic salmon classical conditioning innate behaviour life skills training opercular rate Salmo salar CHEMICAL CUES ANTIPREDATOR BEHAVIOR ACQUIRED PREDATOR OLFACTORY ORGAN CHINOOK SALMON RAINBOW-TROUT BROOK TROUT FISH RESPONSES SURVIVAL |
spellingShingle |
alarm substance Atlantic salmon classical conditioning innate behaviour life skills training opercular rate Salmo salar CHEMICAL CUES ANTIPREDATOR BEHAVIOR ACQUIRED PREDATOR OLFACTORY ORGAN CHINOOK SALMON RAINBOW-TROUT BROOK TROUT FISH RESPONSES SURVIVAL Hawkins, LA Magurran, Anne Elizabeth Armstrong, JD Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
topic_facet |
alarm substance Atlantic salmon classical conditioning innate behaviour life skills training opercular rate Salmo salar CHEMICAL CUES ANTIPREDATOR BEHAVIOR ACQUIRED PREDATOR OLFACTORY ORGAN CHINOOK SALMON RAINBOW-TROUT BROOK TROUT FISH RESPONSES SURVIVAL |
description |
The goal of 'life skills training' is to improve survival of captive-reared animals after release to the wild. Our study tested the hypothesis that learned predator recognition in hatchery-reared fish is favoured at ecologically appropriate periods during ontogeny. We began by asking whether the innate response of Atlantic salmon to predator odour (from high- and low-risk predators) declines during hatchery rearing. Next, we used classical conditioning to assess the capacity of fish in different age groups to learn to recognize predator odour. The first experiment showed that innate predator recognition is retained by fish for at least 8 months in a hatchery environment. However, the response of 10- to 15-week-old salmon to predator odour was significantly greater than that of younger (3-week-old) or older (28- to 36-week-old). fish. This is consistent with a period of heightened receptivity to predator odour cues. The second experiment provided evidence for age-dependent learning because salmon aged 16-20 weeks showed learned predator recognition abilities, whereas 3-week-old fish relied on innate responses. The onset of learning occurred at the age when wild fish undergo a habitat shift that greatly increases their encounters with predators. Future attempts to improve predator recognition skills of fish should take greater account of life history and focus on the ontogenetic stage where learning is favoured. Crown Copyright (c) 2007 Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Hawkins, LA Magurran, Anne Elizabeth Armstrong, JD |
author_facet |
Hawkins, LA Magurran, Anne Elizabeth Armstrong, JD |
author_sort |
Hawkins, LA |
title |
Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
title_short |
Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
title_full |
Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
title_fullStr |
Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
title_full_unstemmed |
Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar |
title_sort |
ontogenetic learning of predator recognition in hatchery-reared atlantic salmon, salmo salar |
publishDate |
2008 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ontogenetic-learning-of-predator-recognition-in-hatcheryreared-atlantic-salmon-salmo-salar(492a550c-90a3-4d2a-8246-4b0937d9162c).html https://doi.org/10.1016/j.anbehav.2007.10.019 http://www.scopus.com/inward/record.url?scp=42049120484&partnerID=8YFLogxK |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Hawkins , LA , Magurran , A E & Armstrong , JD 2008 , ' Ontogenetic learning of predator recognition in hatchery-reared Atlantic salmon, Salmo salar ' , Animal Behaviour , vol. 75 , pp. 1663-1671 . https://doi.org/10.1016/j.anbehav.2007.10.019 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.anbehav.2007.10.019 |
container_title |
Animal Behaviour |
container_volume |
75 |
container_issue |
5 |
container_start_page |
1663 |
op_container_end_page |
1671 |
_version_ |
1766361562758512640 |