In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris )
In-air and underwater sound detection thresholds were obtained for a female northern elephant seal (Mirounga angustirostris). Hearing sensitivity in air was generally poor, but was best for frequencies between 3.2 and 15 kHz, and showed greatest sensitivity at 6.3 kHz (43 dB re: 20 µPa). The upper f...
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1999
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crcansciencepubl:10.1139/z99-151 2023-12-17T10:29:37+01:00 In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) Kastak, D Schusterman, R J 1999 http://dx.doi.org/10.1139/z99-151 http://www.nrcresearchpress.com/doi/pdf/10.1139/z99-151 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 77, issue 11, page 1751-1758 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1999 crcansciencepubl https://doi.org/10.1139/z99-151 2023-11-19T13:39:11Z In-air and underwater sound detection thresholds were obtained for a female northern elephant seal (Mirounga angustirostris). Hearing sensitivity in air was generally poor, but was best for frequencies between 3.2 and 15 kHz, and showed greatest sensitivity at 6.3 kHz (43 dB re: 20 µPa). The upper frequency limit in air was approximately 20 kHz. The underwater audiogram is similar to those obtained from other phocids in that sensitivity was best between 3.2 and 45 kHz, with greatest sensitivity at 6.4 kHz (58 dB re: 1 µPa) and an upper frequency cutoff of approximately 55 kHz. The elephant seal was more sensitive to low frequencies (<1 kHz) than other pinnipeds tested. Thresholds obtained in water were lower than those obtained in air (19 dB in terms of sound pressure, 52 dB in terms of sound intensity), indicating that the elephant seal is adapted for underwater hearing. The outer and middle ears of the elephant seal are modified relative to those of other phocids. These modifications are probably needed to cope with extreme static pressures related to deep diving, and are likely to confer relatively good auditory sensitivity under water. Article in Journal/Newspaper Elephant Seal Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 77 11 1751 1758 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Kastak, D Schusterman, R J In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
In-air and underwater sound detection thresholds were obtained for a female northern elephant seal (Mirounga angustirostris). Hearing sensitivity in air was generally poor, but was best for frequencies between 3.2 and 15 kHz, and showed greatest sensitivity at 6.3 kHz (43 dB re: 20 µPa). The upper frequency limit in air was approximately 20 kHz. The underwater audiogram is similar to those obtained from other phocids in that sensitivity was best between 3.2 and 45 kHz, with greatest sensitivity at 6.4 kHz (58 dB re: 1 µPa) and an upper frequency cutoff of approximately 55 kHz. The elephant seal was more sensitive to low frequencies (<1 kHz) than other pinnipeds tested. Thresholds obtained in water were lower than those obtained in air (19 dB in terms of sound pressure, 52 dB in terms of sound intensity), indicating that the elephant seal is adapted for underwater hearing. The outer and middle ears of the elephant seal are modified relative to those of other phocids. These modifications are probably needed to cope with extreme static pressures related to deep diving, and are likely to confer relatively good auditory sensitivity under water. |
format |
Article in Journal/Newspaper |
author |
Kastak, D Schusterman, R J |
author_facet |
Kastak, D Schusterman, R J |
author_sort |
Kastak, D |
title |
In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
title_short |
In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
title_full |
In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
title_fullStr |
In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
title_full_unstemmed |
In-air and underwater hearing sensitivity of a northern elephant seal ( Mirounga angustirostris ) |
title_sort |
in-air and underwater hearing sensitivity of a northern elephant seal ( mirounga angustirostris ) |
publisher |
Canadian Science Publishing |
publishDate |
1999 |
url |
http://dx.doi.org/10.1139/z99-151 http://www.nrcresearchpress.com/doi/pdf/10.1139/z99-151 |
genre |
Elephant Seal |
genre_facet |
Elephant Seal |
op_source |
Canadian Journal of Zoology volume 77, issue 11, page 1751-1758 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z99-151 |
container_title |
Canadian Journal of Zoology |
container_volume |
77 |
container_issue |
11 |
container_start_page |
1751 |
op_container_end_page |
1758 |
_version_ |
1785582036003586048 |