Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance?
Body condition is central to how animals balance foraging with predator avoidance—a trade-off that fundamentally affects animal fitness. Animals in poor condition may accept greater predation risk to satisfy current foraging ‘needs’, while those in good condition may be more risk averse to protect f...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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2022
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Online Access: | https://research-portal.st-andrews.ac.uk/en/publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 https://doi.org/10.1098/rspb.2021.2539 https://research-repository.st-andrews.ac.uk/bitstream/10023/24753/1/Siegal_2022_RSPB_Beaked_whales_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 2024-09-30T14:37:50+00:00 Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? Siegal, Eilidh Hooker, Sascha Kate Isojunno, Saana Miller, Patrick James 2022-01-26 application/pdf https://research-portal.st-andrews.ac.uk/en/publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 https://doi.org/10.1098/rspb.2021.2539 https://research-repository.st-andrews.ac.uk/bitstream/10023/24753/1/Siegal_2022_RSPB_Beaked_whales_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 info:eu-repo/semantics/openAccess Siegal , E , Hooker , S K , Isojunno , S & Miller , P J 2022 , ' Beaked whales and state-dependent decision-making : how does body condition affect the trade-off between foraging and predator avoidance? ' , Proceedings of the Royal Society B , vol. 289 , no. 1967 , 20212539 . https://doi.org/10.1098/rspb.2021.2539 Beaked whale Anti-predator behaviour Behaviour Foraging State-dependent decision-making Body condition article 2022 ftunstandrewcris https://doi.org/10.1098/rspb.2021.2539 2024-09-04T23:45:35Z Body condition is central to how animals balance foraging with predator avoidance—a trade-off that fundamentally affects animal fitness. Animals in poor condition may accept greater predation risk to satisfy current foraging ‘needs’, while those in good condition may be more risk averse to protect future ‘assets’. These state-dependent behavioural predictions can help interpret responses to human activities, but are little explored in marine animals. This study investigates the influence of body condition on how beaked whales trade-off foraging and predator avoidance. Body density (indicating lipid-energy stores) was estimated for 15 foraging northern bottlenose whales tagged near Jan Mayen, Norway. Composite indices of foraging (diving and echolocation clicks) and anti-predation (long ascents, non-foraging dives and silent periods reducing predator eavesdropping) were negatively related. Experimental sonar exposures led to decreased foraging and increased risk aversion, confirming a foraging/perceived safety trade-off. However, lower lipid stores were not related to a decrease in predator avoidance versus foraging, i.e. worse condition animals did not prioritize foraging. Individual differences (personalities) or reproductive context could offer alternative explanations for the observed state-behaviour relationships. This study provides evidence of foraging/predator-avoidance trade-offs in a marine top predator and demonstrates that animals in worse condition might not always take more risks. Article in Journal/Newspaper Jan Mayen University of St Andrews: Research Portal Jan Mayen Norway Proceedings of the Royal Society B: Biological Sciences 289 1967 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Beaked whale Anti-predator behaviour Behaviour Foraging State-dependent decision-making Body condition |
spellingShingle |
Beaked whale Anti-predator behaviour Behaviour Foraging State-dependent decision-making Body condition Siegal, Eilidh Hooker, Sascha Kate Isojunno, Saana Miller, Patrick James Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
topic_facet |
Beaked whale Anti-predator behaviour Behaviour Foraging State-dependent decision-making Body condition |
description |
Body condition is central to how animals balance foraging with predator avoidance—a trade-off that fundamentally affects animal fitness. Animals in poor condition may accept greater predation risk to satisfy current foraging ‘needs’, while those in good condition may be more risk averse to protect future ‘assets’. These state-dependent behavioural predictions can help interpret responses to human activities, but are little explored in marine animals. This study investigates the influence of body condition on how beaked whales trade-off foraging and predator avoidance. Body density (indicating lipid-energy stores) was estimated for 15 foraging northern bottlenose whales tagged near Jan Mayen, Norway. Composite indices of foraging (diving and echolocation clicks) and anti-predation (long ascents, non-foraging dives and silent periods reducing predator eavesdropping) were negatively related. Experimental sonar exposures led to decreased foraging and increased risk aversion, confirming a foraging/perceived safety trade-off. However, lower lipid stores were not related to a decrease in predator avoidance versus foraging, i.e. worse condition animals did not prioritize foraging. Individual differences (personalities) or reproductive context could offer alternative explanations for the observed state-behaviour relationships. This study provides evidence of foraging/predator-avoidance trade-offs in a marine top predator and demonstrates that animals in worse condition might not always take more risks. |
format |
Article in Journal/Newspaper |
author |
Siegal, Eilidh Hooker, Sascha Kate Isojunno, Saana Miller, Patrick James |
author_facet |
Siegal, Eilidh Hooker, Sascha Kate Isojunno, Saana Miller, Patrick James |
author_sort |
Siegal, Eilidh |
title |
Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
title_short |
Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
title_full |
Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
title_fullStr |
Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
title_full_unstemmed |
Beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
title_sort |
beaked whales and state-dependent decision-making:how does body condition affect the trade-off between foraging and predator avoidance? |
publishDate |
2022 |
url |
https://research-portal.st-andrews.ac.uk/en/publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 https://doi.org/10.1098/rspb.2021.2539 https://research-repository.st-andrews.ac.uk/bitstream/10023/24753/1/Siegal_2022_RSPB_Beaked_whales_CC.pdf |
geographic |
Jan Mayen Norway |
geographic_facet |
Jan Mayen Norway |
genre |
Jan Mayen |
genre_facet |
Jan Mayen |
op_source |
Siegal , E , Hooker , S K , Isojunno , S & Miller , P J 2022 , ' Beaked whales and state-dependent decision-making : how does body condition affect the trade-off between foraging and predator avoidance? ' , Proceedings of the Royal Society B , vol. 289 , no. 1967 , 20212539 . https://doi.org/10.1098/rspb.2021.2539 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/publications/afb4b965-d256-41fb-a0d7-2f4eaf18abd0 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1098/rspb.2021.2539 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
289 |
container_issue |
1967 |
_version_ |
1811640609950138368 |