Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima )
Dwarf sperm whales ( Kogia sima ) are small toothed whales that produce narrow-band high-frequency (NBHF) echolocation clicks. Such NBHF clicks, subject to high levels of acoustic absorption, are usually produced by small, shallow-diving odontocetes, such as porpoises, in keeping with their short-ra...
Published in: | Journal of Experimental Biology |
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Format: | Article in Journal/Newspaper |
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2021
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/echolocation-click-parameters-and-biosonar-behaviour-of-the-dwarf-sperm-whale-kogia-sima(638f32b0-7260-4fe3-89dc-9cb4680c6ef6).html https://doi.org/10.1242/jeb.240689 https://research-repository.st-andrews.ac.uk/bitstream/10023/25110/1/Malinka_2021_JEB_Echolocation_click_VoR.pdf https://journals.biologists.com/jeb/article/224/6/jeb240689/237928/Echolocation-click-parameters-and-biosonar#supplementary-data |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/638f32b0-7260-4fe3-89dc-9cb4680c6ef6 2023-05-15T18:26:51+02:00 Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) Malinka, Chloe E Tønnesen, Pernille Dunn, Charlotte A Claridge, Diane E Gridley, Tess Elwen, Simon H Teglberg Madsen, Peter 2021-03-26 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/echolocation-click-parameters-and-biosonar-behaviour-of-the-dwarf-sperm-whale-kogia-sima(638f32b0-7260-4fe3-89dc-9cb4680c6ef6).html https://doi.org/10.1242/jeb.240689 https://research-repository.st-andrews.ac.uk/bitstream/10023/25110/1/Malinka_2021_JEB_Echolocation_click_VoR.pdf https://journals.biologists.com/jeb/article/224/6/jeb240689/237928/Echolocation-click-parameters-and-biosonar#supplementary-data eng eng info:eu-repo/semantics/openAccess Malinka , C E , Tønnesen , P , Dunn , C A , Claridge , D E , Gridley , T , Elwen , S H & Teglberg Madsen , P 2021 , ' Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) ' , Journal of Experimental Biology , vol. 224 , no. 6 , jeb240689 . https://doi.org/10.1242/jeb.240689 Beam pattern Bioacoustics Hydrophone array Narrow-band high-frequency Passive acoustic monitoring Source parameters article 2021 ftunstandrewcris https://doi.org/10.1242/jeb.240689 2022-06-02T07:53:06Z Dwarf sperm whales ( Kogia sima ) are small toothed whales that produce narrow-band high-frequency (NBHF) echolocation clicks. Such NBHF clicks, subject to high levels of acoustic absorption, are usually produced by small, shallow-diving odontocetes, such as porpoises, in keeping with their short-range echolocation and fast click rates. Here, we sought to address the problem of how the little-studied and deep-diving Kogia can hunt with NBHF clicks in the deep sea. Specifically, we tested the hypotheses that Kogia produce NBHF clicks with longer inter-click intervals (ICIs), higher directionality and higher source levels (SLs) compared with other NBHF species. We did this by deploying an autonomous deep-water vertical hydrophone array in the Bahamas, where no other NBHF species are present, and by taking opportunistic recordings of a close-range Kogia sima in a South African harbour. Parameters from on-axis clicks (n=46) in the deep revealed very narrow-band clicks (root mean squared bandwidth, BW RMS , of 3±1 kHz), with SLs of up to 197 dB re. 1 µPa peak-to-peak (μPa pp ) at 1 m, and a half-power beamwidth of 8.8 deg. Their ICIs (mode of 245 ms) were much longer than those of porpoises (<100 ms), suggesting an inspection range that is longer than detection ranges of single prey, perhaps to facilitate auditory streaming of a complex echo scene. On-axis clicks in the shallow harbour (n=870) had ICIs and SLs in keeping with source parameters of other NBHF cetaceans. Thus, in the deep, dwarf sperm whales use a directional, but short-range echolocation system with moderate SLs, suggesting a reliable mesopelagic prey habitat. Article in Journal/Newspaper Sperm whale toothed whales University of St Andrews: Research Portal Journal of Experimental Biology 224 6 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Beam pattern Bioacoustics Hydrophone array Narrow-band high-frequency Passive acoustic monitoring Source parameters |
spellingShingle |
Beam pattern Bioacoustics Hydrophone array Narrow-band high-frequency Passive acoustic monitoring Source parameters Malinka, Chloe E Tønnesen, Pernille Dunn, Charlotte A Claridge, Diane E Gridley, Tess Elwen, Simon H Teglberg Madsen, Peter Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
topic_facet |
Beam pattern Bioacoustics Hydrophone array Narrow-band high-frequency Passive acoustic monitoring Source parameters |
description |
Dwarf sperm whales ( Kogia sima ) are small toothed whales that produce narrow-band high-frequency (NBHF) echolocation clicks. Such NBHF clicks, subject to high levels of acoustic absorption, are usually produced by small, shallow-diving odontocetes, such as porpoises, in keeping with their short-range echolocation and fast click rates. Here, we sought to address the problem of how the little-studied and deep-diving Kogia can hunt with NBHF clicks in the deep sea. Specifically, we tested the hypotheses that Kogia produce NBHF clicks with longer inter-click intervals (ICIs), higher directionality and higher source levels (SLs) compared with other NBHF species. We did this by deploying an autonomous deep-water vertical hydrophone array in the Bahamas, where no other NBHF species are present, and by taking opportunistic recordings of a close-range Kogia sima in a South African harbour. Parameters from on-axis clicks (n=46) in the deep revealed very narrow-band clicks (root mean squared bandwidth, BW RMS , of 3±1 kHz), with SLs of up to 197 dB re. 1 µPa peak-to-peak (μPa pp ) at 1 m, and a half-power beamwidth of 8.8 deg. Their ICIs (mode of 245 ms) were much longer than those of porpoises (<100 ms), suggesting an inspection range that is longer than detection ranges of single prey, perhaps to facilitate auditory streaming of a complex echo scene. On-axis clicks in the shallow harbour (n=870) had ICIs and SLs in keeping with source parameters of other NBHF cetaceans. Thus, in the deep, dwarf sperm whales use a directional, but short-range echolocation system with moderate SLs, suggesting a reliable mesopelagic prey habitat. |
format |
Article in Journal/Newspaper |
author |
Malinka, Chloe E Tønnesen, Pernille Dunn, Charlotte A Claridge, Diane E Gridley, Tess Elwen, Simon H Teglberg Madsen, Peter |
author_facet |
Malinka, Chloe E Tønnesen, Pernille Dunn, Charlotte A Claridge, Diane E Gridley, Tess Elwen, Simon H Teglberg Madsen, Peter |
author_sort |
Malinka, Chloe E |
title |
Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
title_short |
Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
title_full |
Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
title_fullStr |
Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
title_full_unstemmed |
Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) |
title_sort |
echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( kogia sima ) |
publishDate |
2021 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/echolocation-click-parameters-and-biosonar-behaviour-of-the-dwarf-sperm-whale-kogia-sima(638f32b0-7260-4fe3-89dc-9cb4680c6ef6).html https://doi.org/10.1242/jeb.240689 https://research-repository.st-andrews.ac.uk/bitstream/10023/25110/1/Malinka_2021_JEB_Echolocation_click_VoR.pdf https://journals.biologists.com/jeb/article/224/6/jeb240689/237928/Echolocation-click-parameters-and-biosonar#supplementary-data |
genre |
Sperm whale toothed whales |
genre_facet |
Sperm whale toothed whales |
op_source |
Malinka , C E , Tønnesen , P , Dunn , C A , Claridge , D E , Gridley , T , Elwen , S H & Teglberg Madsen , P 2021 , ' Echolocation click parameters and biosonar behaviour of the dwarf sperm whale ( Kogia sima ) ' , Journal of Experimental Biology , vol. 224 , no. 6 , jeb240689 . https://doi.org/10.1242/jeb.240689 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1242/jeb.240689 |
container_title |
Journal of Experimental Biology |
container_volume |
224 |
container_issue |
6 |
_version_ |
1766208815615705088 |