Beaked whales and state-dependent decision-making: how does body condition affect the trade-off between foraging and predator avoidance? Article Swipe
Eilidh Siegal
,
Sascha K. Hooker
,
Saana Isojunno
,
Patrick J. O. Miller
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1098/rspb.2021.2539
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1098/rspb.2021.2539
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.
Related Topics
Concepts
Foraging
Predator
Predation
Biology
Human echolocation
Ecology
Context (archaeology)
Predator avoidance
Neuroscience
Paleontology
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1098/rspb.2021.2539
- OA Status
- hybrid
- Cited By
- 18
- References
- 58
- Related Works
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- OpenAlex ID
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All OpenAlex metadata
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https://openalex.org/W4210377943Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1098/rspb.2021.2539Digital Object Identifier
- Title
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Beaked whales and state-dependent decision-making: how does body condition affect the trade-off between foraging and predator avoidance?Work title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-01-26Full publication date if available
- Authors
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Eilidh Siegal, Sascha K. Hooker, Saana Isojunno, Patrick J. O. MillerList of authors in order
- Landing page
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https://doi.org/10.1098/rspb.2021.2539Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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hybridOpen access status per OpenAlex
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https://doi.org/10.1098/rspb.2021.2539Direct OA link when available
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Foraging, Predator, Predation, Biology, Human echolocation, Ecology, Context (archaeology), Predator avoidance, Neuroscience, PaleontologyTop concepts (fields/topics) attached by OpenAlex
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18Total citation count in OpenAlex
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2025: 6, 2024: 4, 2023: 4, 2022: 4Per-year citation counts (last 5 years)
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58Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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