Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation
Blainville's beaked whales (Mesoplodon densirostris Blainville) echolocate for prey during deep foraging dives. Here we use acoustic tags to demonstrate that these whales, in contrast to other toothed whales studied, produce two distinct types of click sounds during different phases in biosonar...
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/foraging-blainvilles-beaked-whales-mesoplodon-densirostris-produce-distinct-click-types-matched-to-different-phases-of-echolocation(3c08bbeb-f9c9-4d73-9aff-d1d75181677c).html https://doi.org/10.1242/jeb.02596 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/3c08bbeb-f9c9-4d73-9aff-d1d75181677c 2024-06-23T07:57:12+00:00 Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation Johnson, M. Madsen, P. T. Zimmer, W. M. X. de Soto, N. Aguilar Tyack, P. L. 2006-12-15 https://research-portal.st-andrews.ac.uk/en/researchoutput/foraging-blainvilles-beaked-whales-mesoplodon-densirostris-produce-distinct-click-types-matched-to-different-phases-of-echolocation(3c08bbeb-f9c9-4d73-9aff-d1d75181677c).html https://doi.org/10.1242/jeb.02596 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/foraging-blainvilles-beaked-whales-mesoplodon-densirostris-produce-distinct-click-types-matched-to-different-phases-of-echolocation(3c08bbeb-f9c9-4d73-9aff-d1d75181677c).html info:eu-repo/semantics/restrictedAccess Johnson , M , Madsen , P T , Zimmer , W M X , de Soto , N A & Tyack , P L 2006 , ' Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation ' , Journal of Experimental Biology , vol. 209 , no. 24 , pp. 5038-5050 . https://doi.org/10.1242/jeb.02596 article 2006 ftunstandrewcris https://doi.org/10.1242/jeb.02596 2024-06-13T00:33:52Z Blainville's beaked whales (Mesoplodon densirostris Blainville) echolocate for prey during deep foraging dives. Here we use acoustic tags to demonstrate that these whales, in contrast to other toothed whales studied, produce two distinct types of click sounds during different phases in biosonar-based foraging. Search clicks are emitted during foraging dives with inter-click intervals typically between 0.2 and 0.4 s. They have the distinctive form of an FM upsweep (modulation rate of about 110 kHz ms(-1)) with a-10 dB bandwidth from 26 to 51 kHz and a pulse length of 270 mu s, somewhat similar to chirp signals in bats and Cuvier's beaked whales (Ziphius cavirostris Cuvier), but quite different from clicks of other toothed whales studied. In comparison, the buzz clicks, produced in short bursts during the final stage of prey capture, are short (105 mu s) transients with no FM structure and a -10 dB bandwidth from 25 to 80 kHz or higher. Buzz clicks have properties similar to clicks reported from large delphinids and hold the potential for higher temporal resolution than the FM clicks. It is suggested that the two click types are adapted to the separate problems of target detection and classification versus capture of low target strength prey in a cluttered acoustic environment. Article in Journal/Newspaper toothed whales University of St Andrews: Research Portal Journal of Experimental Biology 209 24 5038 5050 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
Blainville's beaked whales (Mesoplodon densirostris Blainville) echolocate for prey during deep foraging dives. Here we use acoustic tags to demonstrate that these whales, in contrast to other toothed whales studied, produce two distinct types of click sounds during different phases in biosonar-based foraging. Search clicks are emitted during foraging dives with inter-click intervals typically between 0.2 and 0.4 s. They have the distinctive form of an FM upsweep (modulation rate of about 110 kHz ms(-1)) with a-10 dB bandwidth from 26 to 51 kHz and a pulse length of 270 mu s, somewhat similar to chirp signals in bats and Cuvier's beaked whales (Ziphius cavirostris Cuvier), but quite different from clicks of other toothed whales studied. In comparison, the buzz clicks, produced in short bursts during the final stage of prey capture, are short (105 mu s) transients with no FM structure and a -10 dB bandwidth from 25 to 80 kHz or higher. Buzz clicks have properties similar to clicks reported from large delphinids and hold the potential for higher temporal resolution than the FM clicks. It is suggested that the two click types are adapted to the separate problems of target detection and classification versus capture of low target strength prey in a cluttered acoustic environment. |
format |
Article in Journal/Newspaper |
author |
Johnson, M. Madsen, P. T. Zimmer, W. M. X. de Soto, N. Aguilar Tyack, P. L. |
spellingShingle |
Johnson, M. Madsen, P. T. Zimmer, W. M. X. de Soto, N. Aguilar Tyack, P. L. Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
author_facet |
Johnson, M. Madsen, P. T. Zimmer, W. M. X. de Soto, N. Aguilar Tyack, P. L. |
author_sort |
Johnson, M. |
title |
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
title_short |
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
title_full |
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
title_fullStr |
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
title_full_unstemmed |
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
title_sort |
foraging blainville's beaked whales (mesoplodon densirostris) produce distinct click types matched to different phases of echolocation |
publishDate |
2006 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/foraging-blainvilles-beaked-whales-mesoplodon-densirostris-produce-distinct-click-types-matched-to-different-phases-of-echolocation(3c08bbeb-f9c9-4d73-9aff-d1d75181677c).html https://doi.org/10.1242/jeb.02596 |
genre |
toothed whales |
genre_facet |
toothed whales |
op_source |
Johnson , M , Madsen , P T , Zimmer , W M X , de Soto , N A & Tyack , P L 2006 , ' Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation ' , Journal of Experimental Biology , vol. 209 , no. 24 , pp. 5038-5050 . https://doi.org/10.1242/jeb.02596 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/foraging-blainvilles-beaked-whales-mesoplodon-densirostris-produce-distinct-click-types-matched-to-different-phases-of-echolocation(3c08bbeb-f9c9-4d73-9aff-d1d75181677c).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1242/jeb.02596 |
container_title |
Journal of Experimental Biology |
container_volume |
209 |
container_issue |
24 |
container_start_page |
5038 |
op_container_end_page |
5050 |
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1802650715287453696 |