Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning
Predator conditioning can be used to improve post-release antipredator recognition of hatchery-reared salmonids. However, possible negative stress-related effects of prolonged predator conditioning on juvenile fish physiology are poorly understood. We studied the effects of prolonged (91 days) preda...
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ftzenodo:oai:zenodo.org:5023003 2024-09-15T17:52:23+00:00 Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning Kortet, Raine Laakkonen, Mika V.M. Tikkanen, Jouni Vainikka, Anssi Hirvonen, Heikki 2019-03-12 https://doi.org/10.5061/dryad.t73c30m unknown Zenodo https://doi.org/10.1111/are.14023 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.t73c30m oai:zenodo.org:5023003 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode predator conditioning Cortisol antipredator response immune defence Salvelinus alpinus info:eu-repo/semantics/other 2019 ftzenodo https://doi.org/10.5061/dryad.t73c30m10.1111/are.14023 2024-07-26T11:42:25Z Predator conditioning can be used to improve post-release antipredator recognition of hatchery-reared salmonids. However, possible negative stress-related effects of prolonged predator conditioning on juvenile fish physiology are poorly understood. We studied the effects of prolonged (91 days) predator odour exposure on whole-body cortisol level and spleen size in six full-sib families of juvenile hatchery-bred Arctic charr (Salvelinus alpinus). Chemical cues from water containing charr-fed pikeperch (Sander lucioperca) were used as the predator exposure stimuli, and lakewater was used as a chemical control. Our study revealed that juvenile body cortisol levels post-predator conditioning were affected by treatment, fish size and their interaction. Importantly, among the smaller (i.e. slowest growing) charr, the predator-exposed fish had higher cortisol levels than control fish, while the opposite pattern was true for the larger fish. These results suggest that chemical cues from charr-fed predators induce a prolonged stress response in juvenile charr. As prolonged predation exposure seems to elevate stress levels in a size-dependent manner, the larger, faster growing fish could possibly have intrinsically lower stress responses to predation threats than smaller, slower growing fish. Possible coupling between stress sensitivity and growth requires further attention due to the likely implications for the management of unintended domestication among captive-reared salmonids. Arctic_charr_cortisol_data_Dryad Cortisol data Other/Unknown Material Arctic charr Salvelinus alpinus Zenodo |
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predator conditioning Cortisol antipredator response immune defence Salvelinus alpinus |
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predator conditioning Cortisol antipredator response immune defence Salvelinus alpinus Kortet, Raine Laakkonen, Mika V.M. Tikkanen, Jouni Vainikka, Anssi Hirvonen, Heikki Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
topic_facet |
predator conditioning Cortisol antipredator response immune defence Salvelinus alpinus |
description |
Predator conditioning can be used to improve post-release antipredator recognition of hatchery-reared salmonids. However, possible negative stress-related effects of prolonged predator conditioning on juvenile fish physiology are poorly understood. We studied the effects of prolonged (91 days) predator odour exposure on whole-body cortisol level and spleen size in six full-sib families of juvenile hatchery-bred Arctic charr (Salvelinus alpinus). Chemical cues from water containing charr-fed pikeperch (Sander lucioperca) were used as the predator exposure stimuli, and lakewater was used as a chemical control. Our study revealed that juvenile body cortisol levels post-predator conditioning were affected by treatment, fish size and their interaction. Importantly, among the smaller (i.e. slowest growing) charr, the predator-exposed fish had higher cortisol levels than control fish, while the opposite pattern was true for the larger fish. These results suggest that chemical cues from charr-fed predators induce a prolonged stress response in juvenile charr. As prolonged predation exposure seems to elevate stress levels in a size-dependent manner, the larger, faster growing fish could possibly have intrinsically lower stress responses to predation threats than smaller, slower growing fish. Possible coupling between stress sensitivity and growth requires further attention due to the likely implications for the management of unintended domestication among captive-reared salmonids. Arctic_charr_cortisol_data_Dryad Cortisol data |
format |
Other/Unknown Material |
author |
Kortet, Raine Laakkonen, Mika V.M. Tikkanen, Jouni Vainikka, Anssi Hirvonen, Heikki |
author_facet |
Kortet, Raine Laakkonen, Mika V.M. Tikkanen, Jouni Vainikka, Anssi Hirvonen, Heikki |
author_sort |
Kortet, Raine |
title |
Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
title_short |
Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
title_full |
Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
title_fullStr |
Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
title_full_unstemmed |
Data from: Size‐dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning |
title_sort |
data from: size‐dependent stress response in juvenile arctic charr (salvelinus alpinus) under prolonged predator conditioning |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.t73c30m |
genre |
Arctic charr Salvelinus alpinus |
genre_facet |
Arctic charr Salvelinus alpinus |
op_relation |
https://doi.org/10.1111/are.14023 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.t73c30m oai:zenodo.org:5023003 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.t73c30m10.1111/are.14023 |
_version_ |
1810294428280029184 |