Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds
Abstract The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantified using hidden state analysis of time series of acoustic and movement data recorded by tags ( DTAG ) attached to 12 sperm whales ( Physeter macrocep...
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crwiley:10.1890/15-0040 2024-09-30T14:38:04+00:00 Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds Isojunno, Saana Curé, Charlotte Kvadsheim, Petter Helgevold Lam, Frans‐Peter Alexander Tyack, Peter Lloyd Wensveen, Paul Jacobus Miller, Patrick James O'Malley Scottish Funding Council 2016 http://dx.doi.org/10.1890/15-0040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1890%2F15-0040 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/15-0040 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecological Applications volume 26, issue 1, page 77-93 ISSN 1051-0761 1939-5582 journal-article 2016 crwiley https://doi.org/10.1890/15-0040 2024-09-11T04:15:19Z Abstract The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantified using hidden state analysis of time series of acoustic and movement data recorded by tags ( DTAG ) attached to 12 sperm whales ( Physeter macrocephalus ) using suction cups. Behavioral state transition modeling showed that tagged whales switched to a non‐foraging, non‐resting state during both experimental transmissions of low‐frequency active sonar from an approaching vessel ( LFAS 1–2 kH z, source level 214 dB re 1 μPa m, four tag records) and playbacks of potential predator (killer whale, Orcinus orca ) sounds broadcast at naturally occurring sound levels as a positive control from a drifting boat (five tag records). Time spent in foraging states and the probability of prey capture attempts were reduced during these two types of exposures with little change in overall locomotion activity, suggesting an effect on energy intake with no immediate compensation. Whales switched to the active non‐foraging state over received sound pressure levels of 131–165 dB re 1 μPa during LFAS exposure. In contrast, no changes in foraging behavior were detected in response to experimental negative controls (no‐sonar ship approach or noise control playback) or to experimental medium‐frequency active sonar exposures ( MFAS 6–7 kH z, source level 199 re 1 μPa m, received sound pressure level [ SPL ] = 73–158 dB re 1 μPa). Similarly, there was no reduction in foraging effort for three whales exposed to incidental, unidentified 4.7–5.1 kH z sonar signals received at lower levels ( SPL = 89–133 dB re 1 μPa). These results demonstrate that similar to predation risk, exposure to sonar can affect functional behaviors, and indicate that increased perception of risk with higher source level or lower frequency may modulate how sperm whales respond to anthropogenic sound. Article in Journal/Newspaper Killer Whale Orca Orcinus orca Physeter macrocephalus Killer whale Wiley Online Library Ecological Applications 26 1 77 93 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantified using hidden state analysis of time series of acoustic and movement data recorded by tags ( DTAG ) attached to 12 sperm whales ( Physeter macrocephalus ) using suction cups. Behavioral state transition modeling showed that tagged whales switched to a non‐foraging, non‐resting state during both experimental transmissions of low‐frequency active sonar from an approaching vessel ( LFAS 1–2 kH z, source level 214 dB re 1 μPa m, four tag records) and playbacks of potential predator (killer whale, Orcinus orca ) sounds broadcast at naturally occurring sound levels as a positive control from a drifting boat (five tag records). Time spent in foraging states and the probability of prey capture attempts were reduced during these two types of exposures with little change in overall locomotion activity, suggesting an effect on energy intake with no immediate compensation. Whales switched to the active non‐foraging state over received sound pressure levels of 131–165 dB re 1 μPa during LFAS exposure. In contrast, no changes in foraging behavior were detected in response to experimental negative controls (no‐sonar ship approach or noise control playback) or to experimental medium‐frequency active sonar exposures ( MFAS 6–7 kH z, source level 199 re 1 μPa m, received sound pressure level [ SPL ] = 73–158 dB re 1 μPa). Similarly, there was no reduction in foraging effort for three whales exposed to incidental, unidentified 4.7–5.1 kH z sonar signals received at lower levels ( SPL = 89–133 dB re 1 μPa). These results demonstrate that similar to predation risk, exposure to sonar can affect functional behaviors, and indicate that increased perception of risk with higher source level or lower frequency may modulate how sperm whales respond to anthropogenic sound. |
author2 |
Scottish Funding Council |
format |
Article in Journal/Newspaper |
author |
Isojunno, Saana Curé, Charlotte Kvadsheim, Petter Helgevold Lam, Frans‐Peter Alexander Tyack, Peter Lloyd Wensveen, Paul Jacobus Miller, Patrick James O'Malley |
spellingShingle |
Isojunno, Saana Curé, Charlotte Kvadsheim, Petter Helgevold Lam, Frans‐Peter Alexander Tyack, Peter Lloyd Wensveen, Paul Jacobus Miller, Patrick James O'Malley Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
author_facet |
Isojunno, Saana Curé, Charlotte Kvadsheim, Petter Helgevold Lam, Frans‐Peter Alexander Tyack, Peter Lloyd Wensveen, Paul Jacobus Miller, Patrick James O'Malley |
author_sort |
Isojunno, Saana |
title |
Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
title_short |
Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
title_full |
Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
title_fullStr |
Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
title_full_unstemmed |
Sperm whales reduce foraging effort during exposure to 1–2 kHz sonar and killer whale sounds |
title_sort |
sperm whales reduce foraging effort during exposure to 1–2 khz sonar and killer whale sounds |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1890/15-0040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1890%2F15-0040 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/15-0040 |
genre |
Killer Whale Orca Orcinus orca Physeter macrocephalus Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Physeter macrocephalus Killer whale |
op_source |
Ecological Applications volume 26, issue 1, page 77-93 ISSN 1051-0761 1939-5582 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1890/15-0040 |
container_title |
Ecological Applications |
container_volume |
26 |
container_issue |
1 |
container_start_page |
77 |
op_container_end_page |
93 |
_version_ |
1811640815454257152 |