Behavioral responses to predatory sounds predict sensitivity of cetaceans to anthropogenic noise within a soundscape of fear

SignificanceAcoustic signals travel efficiently in the marine environment, allowing soniferous predators and prey to eavesdrop on each other. Our results with four cetacean species indicate that they use acoustic information to assess predation risk and have evolved mechanisms to reduce predation ri...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2022-03, Vol.119 (13), p.e2114932119-e2114932119
Main Authors: Miller, Patrick J O, Isojunno, Saana, Siegal, Eilidh, Lam, Frans-Peter A, Kvadsheim, Petter H, Curé, Charlotte
Format: Article
Language:English
Subjects:
Acoustics
Adaptation
Animals
Anthropogenic factors
Anti-predator behavior
Aquatic mammals
Biological Sciences
Cetacea
Context
Fear
Foraging habitats
Hearing
Human influences
Ice cover
Mechanics
Noise
Noise prediction
Physics
Playbacks
Polar environments
Predation
Predators
Predatory Behavior
Risk perception
Sensitivity
Sonar
Sound
Species
Whale, Killer
Whales & whaling
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Summary:SignificanceAcoustic signals travel efficiently in the marine environment, allowing soniferous predators and prey to eavesdrop on each other. Our results with four cetacean species indicate that they use acoustic information to assess predation risk and have evolved mechanisms to reduce predation risk by ceasing foraging. Species that more readily gave up foraging in response to predatory sounds of killer whales also decreased foraging more during 1- to 4-kHz sonar exposures, indicating that species exhibiting costly antipredator responses also have stronger behavioral reactions to anthropogenic noise. This advance in our understanding of the drivers of disturbance helps us to predict what species and habitats are likely to be most severely impacted by underwater noise pollution in oceans undergoing increasing anthropogenic activities.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.2114932119