Elastic Modulus of Cetacean Auditory Ossicles
ABSTRACT In order to model the hearing capabilities of marine mammals (cetaceans), it is necessary to understand the mechanical properties, such as elastic modulus, of the middle ear bones in these species. Biologically realistic models can be used to investigate the biomechanics of hearing in cetac...
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crwiley:10.1002/ar.22896 2024-06-02T08:04:02+00:00 Elastic Modulus of Cetacean Auditory Ossicles Tubelli, Andrew A. Zosuls, Aleks Ketten, Darlene R. Mountain, David C. 2014 http://dx.doi.org/10.1002/ar.22896 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.22896 https://onlinelibrary.wiley.com/doi/full/10.1002/ar.22896 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Anatomical Record volume 297, issue 5, page 892-900 ISSN 1932-8486 1932-8494 journal-article 2014 crwiley https://doi.org/10.1002/ar.22896 2024-05-03T10:47:36Z ABSTRACT In order to model the hearing capabilities of marine mammals (cetaceans), it is necessary to understand the mechanical properties, such as elastic modulus, of the middle ear bones in these species. Biologically realistic models can be used to investigate the biomechanics of hearing in cetaceans, much of which is currently unknown. In the present study, the elastic moduli of the auditory ossicles (malleus, incus, and stapes) of eight species of cetacean, two baleen whales (mysticete) and six toothed whales (odontocete), were measured using nanoindentation. The two groups of mysticete ossicles overall had lower average elastic moduli (35.2 ± 13.3 GPa and 31.6 ± 6.5 GPa) than the groups of odontocete ossicles (53.3 ± 7.2 GPa to 62.3 ± 4.7 GPa). Interior bone generally had a higher modulus than cortical bone by up to 36%. The effects of freezing and formalin‐fixation on elastic modulus were also investigated, although samples were few and no clear trend could be discerned. The high elastic modulus of the ossicles and the differences in the elastic moduli between mysticetes and odontocetes are likely specializations in the bone for underwater hearing. Anat Rec, 297:892–900, 2014. © 2014 Wiley Periodicals, Inc. Article in Journal/Newspaper baleen whales toothed whales Wiley Online Library The Anatomical Record 297 5 892 900 |
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English |
description |
ABSTRACT In order to model the hearing capabilities of marine mammals (cetaceans), it is necessary to understand the mechanical properties, such as elastic modulus, of the middle ear bones in these species. Biologically realistic models can be used to investigate the biomechanics of hearing in cetaceans, much of which is currently unknown. In the present study, the elastic moduli of the auditory ossicles (malleus, incus, and stapes) of eight species of cetacean, two baleen whales (mysticete) and six toothed whales (odontocete), were measured using nanoindentation. The two groups of mysticete ossicles overall had lower average elastic moduli (35.2 ± 13.3 GPa and 31.6 ± 6.5 GPa) than the groups of odontocete ossicles (53.3 ± 7.2 GPa to 62.3 ± 4.7 GPa). Interior bone generally had a higher modulus than cortical bone by up to 36%. The effects of freezing and formalin‐fixation on elastic modulus were also investigated, although samples were few and no clear trend could be discerned. The high elastic modulus of the ossicles and the differences in the elastic moduli between mysticetes and odontocetes are likely specializations in the bone for underwater hearing. Anat Rec, 297:892–900, 2014. © 2014 Wiley Periodicals, Inc. |
format |
Article in Journal/Newspaper |
author |
Tubelli, Andrew A. Zosuls, Aleks Ketten, Darlene R. Mountain, David C. |
spellingShingle |
Tubelli, Andrew A. Zosuls, Aleks Ketten, Darlene R. Mountain, David C. Elastic Modulus of Cetacean Auditory Ossicles |
author_facet |
Tubelli, Andrew A. Zosuls, Aleks Ketten, Darlene R. Mountain, David C. |
author_sort |
Tubelli, Andrew A. |
title |
Elastic Modulus of Cetacean Auditory Ossicles |
title_short |
Elastic Modulus of Cetacean Auditory Ossicles |
title_full |
Elastic Modulus of Cetacean Auditory Ossicles |
title_fullStr |
Elastic Modulus of Cetacean Auditory Ossicles |
title_full_unstemmed |
Elastic Modulus of Cetacean Auditory Ossicles |
title_sort |
elastic modulus of cetacean auditory ossicles |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/ar.22896 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.22896 https://onlinelibrary.wiley.com/doi/full/10.1002/ar.22896 |
genre |
baleen whales toothed whales |
genre_facet |
baleen whales toothed whales |
op_source |
The Anatomical Record volume 297, issue 5, page 892-900 ISSN 1932-8486 1932-8494 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ar.22896 |
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The Anatomical Record |
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297 |
container_issue |
5 |
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892 |
op_container_end_page |
900 |
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1800748665808093184 |