Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale
An immature female killer whale (Orcinus orca) stranded in the Wadden Sea in 2010 and was later transferred to Loro Parque, Tenerife, Spain, for rehabilitation. The killer whale, named “Morgan,” was suspected to have a hearing impairment. To test whether Morgan has a hearing deficit, auditory brains...
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ftunivwagenin:oai:library.wur.nl:wurpubs/506163 2024-01-21T10:07:48+01:00 Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale Lucke, K. Finneran, J.J. Almunia, Javier Houser, D.S. 2016 application/pdf https://research.wur.nl/en/publications/variability-in-click-evoked-potentials-in-killer-whales-orcinus-o https://doi.org/10.1578/AM.42.2.2016.184 en eng https://edepot.wur.nl/387012 https://research.wur.nl/en/publications/variability-in-click-evoked-potentials-in-killer-whales-orcinus-o doi:10.1578/AM.42.2.2016.184 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Aquatic Mammals 42 (2016) 2 ISSN: 0167-5427 Orcinus orca audiometry auditory evoked potentials hearing deficit killer whales marine mammal info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2016 ftunivwagenin https://doi.org/10.1578/AM.42.2.2016.184 2023-12-27T23:14:33Z An immature female killer whale (Orcinus orca) stranded in the Wadden Sea in 2010 and was later transferred to Loro Parque, Tenerife, Spain, for rehabilitation. The killer whale, named “Morgan,” was suspected to have a hearing impairment. To test whether Morgan has a hearing deficit, auditory brainstem responses to short-duration, broadband click stimuli were recorded. The same procedure was conducted with five other killer whales at Loro Parque for comparative purposes. Stereotypical click-evoked responses were recorded in all of the killer whales except Morgan, even at the highest click level that could be projected. Reductions in the amplitude of the click-evoked response paralleled reductions in the stimulus amplitude of the clicks presented to all of the other whales. The lack of a click-evoked response in Morgan indicates that she suffers from a hearing deficit. The magnitude and frequency range over which the hearing deficit occurs cannot be specified with the techniques used here. Nevertheless, it can be concluded that Morgan’s hearing sensitivity to broadband signals is at least 20 to 30 dB worse than the hearing sensitivity of the other killer whales tested. Morgan potentially suffers from a profound hearing deficit or even a complete loss of hearing, but this cannot be determined through the electrophysiological tests used in this experiment. Article in Journal/Newspaper Killer Whale Orca Orcinus orca Killer whale Wageningen UR (University & Research Centre): Digital Library Aquatic Mammals 42 2 184 192 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Orcinus orca audiometry auditory evoked potentials hearing deficit killer whales marine mammal |
spellingShingle |
Orcinus orca audiometry auditory evoked potentials hearing deficit killer whales marine mammal Lucke, K. Finneran, J.J. Almunia, Javier Houser, D.S. Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
topic_facet |
Orcinus orca audiometry auditory evoked potentials hearing deficit killer whales marine mammal |
description |
An immature female killer whale (Orcinus orca) stranded in the Wadden Sea in 2010 and was later transferred to Loro Parque, Tenerife, Spain, for rehabilitation. The killer whale, named “Morgan,” was suspected to have a hearing impairment. To test whether Morgan has a hearing deficit, auditory brainstem responses to short-duration, broadband click stimuli were recorded. The same procedure was conducted with five other killer whales at Loro Parque for comparative purposes. Stereotypical click-evoked responses were recorded in all of the killer whales except Morgan, even at the highest click level that could be projected. Reductions in the amplitude of the click-evoked response paralleled reductions in the stimulus amplitude of the clicks presented to all of the other whales. The lack of a click-evoked response in Morgan indicates that she suffers from a hearing deficit. The magnitude and frequency range over which the hearing deficit occurs cannot be specified with the techniques used here. Nevertheless, it can be concluded that Morgan’s hearing sensitivity to broadband signals is at least 20 to 30 dB worse than the hearing sensitivity of the other killer whales tested. Morgan potentially suffers from a profound hearing deficit or even a complete loss of hearing, but this cannot be determined through the electrophysiological tests used in this experiment. |
format |
Article in Journal/Newspaper |
author |
Lucke, K. Finneran, J.J. Almunia, Javier Houser, D.S. |
author_facet |
Lucke, K. Finneran, J.J. Almunia, Javier Houser, D.S. |
author_sort |
Lucke, K. |
title |
Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
title_short |
Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
title_full |
Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
title_fullStr |
Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
title_full_unstemmed |
Variability in click-evoked potentials in killer whales (Orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
title_sort |
variability in click-evoked potentials in killer whales (orcinus orca) and determination of a hearing impairment in a rehabilitated killer whale |
publishDate |
2016 |
url |
https://research.wur.nl/en/publications/variability-in-click-evoked-potentials-in-killer-whales-orcinus-o https://doi.org/10.1578/AM.42.2.2016.184 |
genre |
Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Killer whale |
op_source |
Aquatic Mammals 42 (2016) 2 ISSN: 0167-5427 |
op_relation |
https://edepot.wur.nl/387012 https://research.wur.nl/en/publications/variability-in-click-evoked-potentials-in-killer-whales-orcinus-o doi:10.1578/AM.42.2.2016.184 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1578/AM.42.2.2016.184 |
container_title |
Aquatic Mammals |
container_volume |
42 |
container_issue |
2 |
container_start_page |
184 |
op_container_end_page |
192 |
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1788698425154338816 |