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 quantifi ed using hidden state analysis of time series of acoustic and movement data recorded by tags ( DTAG ) attached to 12 sperm whales ( Physeter macro...
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fttno:oai:tudelft.nl:uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 2023-05-15T17:03:34+02:00 Sperm whales reduce foraging effort during exposure to 1-2 kHz sonar and killer whale sounds.: Isojunno,S. Curé, C. Helgevold Kvadsheim, P. Lam, F.P.A. Tyack, P.L. Wensveen, P.J. Miller, P.J.O 2016-01-01 http://resolver.tudelft.nl/uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 en eng uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 533231 http://resolver.tudelft.nl/uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 Ecologocial Applications, 1, 26, 77-93 Spermwhales Anthropogenic noise Naval sonar Behavioral budget DTAG Functional state Physeter macrocephalus risk-disturbance hypothesis Defence Safety and Security Observation Weapon & Protection Systems AS - Acoustics & Sonar TS - Technical Sciences article 2016 fttno 2022-04-10T16:35:34Z Abstract . The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantifi ed 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 (fi ve 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 TU Delft: Institutional Repository (Delft University of Technology) |
institution |
Open Polar |
collection |
TU Delft: Institutional Repository (Delft University of Technology) |
op_collection_id |
fttno |
language |
English |
topic |
Spermwhales Anthropogenic noise Naval sonar Behavioral budget DTAG Functional state Physeter macrocephalus risk-disturbance hypothesis Defence Safety and Security Observation Weapon & Protection Systems AS - Acoustics & Sonar TS - Technical Sciences |
spellingShingle |
Spermwhales Anthropogenic noise Naval sonar Behavioral budget DTAG Functional state Physeter macrocephalus risk-disturbance hypothesis Defence Safety and Security Observation Weapon & Protection Systems AS - Acoustics & Sonar TS - Technical Sciences Isojunno,S. Curé, C. Helgevold Kvadsheim, P. Lam, F.P.A. Tyack, P.L. Wensveen, P.J. Miller, P.J.O Sperm whales reduce foraging effort during exposure to 1-2 kHz sonar and killer whale sounds.: |
topic_facet |
Spermwhales Anthropogenic noise Naval sonar Behavioral budget DTAG Functional state Physeter macrocephalus risk-disturbance hypothesis Defence Safety and Security Observation Weapon & Protection Systems AS - Acoustics & Sonar TS - Technical Sciences |
description |
Abstract . The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantifi ed 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 (fi ve 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. |
format |
Article in Journal/Newspaper |
author |
Isojunno,S. Curé, C. Helgevold Kvadsheim, P. Lam, F.P.A. Tyack, P.L. Wensveen, P.J. Miller, P.J.O |
author_facet |
Isojunno,S. Curé, C. Helgevold Kvadsheim, P. Lam, F.P.A. Tyack, P.L. Wensveen, P.J. Miller, P.J.O |
author_sort |
Isojunno,S. |
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.: |
publishDate |
2016 |
url |
http://resolver.tudelft.nl/uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 |
genre |
Killer Whale Orca Orcinus orca Physeter macrocephalus Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Physeter macrocephalus Killer whale |
op_source |
Ecologocial Applications, 1, 26, 77-93 |
op_relation |
uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 533231 http://resolver.tudelft.nl/uuid:8fe32920-32f9-4bac-a9ce-d85c01a78991 |
_version_ |
1766057470422155264 |