Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals
Abstract Background : The hyoid apparatus of odontocetes (toothed whales) serves as a major attachment point for many of the muscles and ligaments subserving breathing, swallowing, and sound production. Methods : This study examines the hyoid apparatus in 48 specimens of ten odontocete genera ( Phoc...
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crwiley:10.1002/ar.1092400417 2024-06-02T08:15:16+00:00 Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals Reidenberg, Joy S. Laitman, Jeffrey T. 1994 http://dx.doi.org/10.1002/ar.1092400417 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.1092400417 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.1092400417 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Anatomical Record volume 240, issue 4, page 598-624 ISSN 0003-276X 1097-0185 journal-article 1994 crwiley https://doi.org/10.1002/ar.1092400417 2024-05-03T11:22:24Z Abstract Background : The hyoid apparatus of odontocetes (toothed whales) serves as a major attachment point for many of the muscles and ligaments subserving breathing, swallowing, and sound production. Methods : This study examines the hyoid apparatus in 48 specimens of ten odontocete genera ( Phocoena , Lagenorhynchus , Stenella , Delphinus , Tursiops , Grampus , Globicephala , Mesoplodon , Physeter , and Kogia ) collected post mortem from beach strandings. Results : The odontocete hyoid apparatus, as that of their closest terrestrial relatives, the artiodactyls, is divisible into a basal portion (bashyal, paired thyrohyals) and a suspensory portion (paired ceratohyals, epihyals, stylohyals, and tympanohyals) connecting the basal portion to the skull base. Unlike other terrestrial mammals, the basal portion lies inferior to the laryngeal aditus, is flattened dorso‐ventrally, and is relatively large, thus providing a broad surface area for muscle attachments. The suspensory elements are not as flattened and are joined by synovial joints (except for epihyal‐stylohyal fusion). Muscular specializations include enlargement of those which retract the hyoid apparatus (e.g., sternohyoid) or control the tongue (e.g., styloglossus, hyoglossus). These muscles may be particularly important in a specialized prey capture behavior called suction feeding. In addition, the hyoid apparatus has a tilted placement, which allows asymmetrical enlargement of the piriform sinuses. Asymmetry is also seen in the muscular attachment between the larynx and the hyoid apparatus. The most pronounced differences from the basic pattern are observed in two families: Physeteridae and Ziphiidae. Conclusions : The derived position and shape of the odontocete hyoid apparatus may have evolved to subserve several specialized upper respiratory/digestive tract functions, such as simultaneous feeding (suction and swallowing) and sound production. © 1994 Wiley‐Liss, Inc. Article in Journal/Newspaper toothed whales Wiley Online Library The Anatomical Record 240 4 598 624 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Background : The hyoid apparatus of odontocetes (toothed whales) serves as a major attachment point for many of the muscles and ligaments subserving breathing, swallowing, and sound production. Methods : This study examines the hyoid apparatus in 48 specimens of ten odontocete genera ( Phocoena , Lagenorhynchus , Stenella , Delphinus , Tursiops , Grampus , Globicephala , Mesoplodon , Physeter , and Kogia ) collected post mortem from beach strandings. Results : The odontocete hyoid apparatus, as that of their closest terrestrial relatives, the artiodactyls, is divisible into a basal portion (bashyal, paired thyrohyals) and a suspensory portion (paired ceratohyals, epihyals, stylohyals, and tympanohyals) connecting the basal portion to the skull base. Unlike other terrestrial mammals, the basal portion lies inferior to the laryngeal aditus, is flattened dorso‐ventrally, and is relatively large, thus providing a broad surface area for muscle attachments. The suspensory elements are not as flattened and are joined by synovial joints (except for epihyal‐stylohyal fusion). Muscular specializations include enlargement of those which retract the hyoid apparatus (e.g., sternohyoid) or control the tongue (e.g., styloglossus, hyoglossus). These muscles may be particularly important in a specialized prey capture behavior called suction feeding. In addition, the hyoid apparatus has a tilted placement, which allows asymmetrical enlargement of the piriform sinuses. Asymmetry is also seen in the muscular attachment between the larynx and the hyoid apparatus. The most pronounced differences from the basic pattern are observed in two families: Physeteridae and Ziphiidae. Conclusions : The derived position and shape of the odontocete hyoid apparatus may have evolved to subserve several specialized upper respiratory/digestive tract functions, such as simultaneous feeding (suction and swallowing) and sound production. © 1994 Wiley‐Liss, Inc. |
format |
Article in Journal/Newspaper |
author |
Reidenberg, Joy S. Laitman, Jeffrey T. |
spellingShingle |
Reidenberg, Joy S. Laitman, Jeffrey T. Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
author_facet |
Reidenberg, Joy S. Laitman, Jeffrey T. |
author_sort |
Reidenberg, Joy S. |
title |
Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
title_short |
Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
title_full |
Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
title_fullStr |
Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
title_full_unstemmed |
Anatomy of the hyoid apparatus in odontoceli (toothed whales): Specializations of their skeleton and musculature compared with those of terrestrial mammals |
title_sort |
anatomy of the hyoid apparatus in odontoceli (toothed whales): specializations of their skeleton and musculature compared with those of terrestrial mammals |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1002/ar.1092400417 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.1092400417 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.1092400417 |
genre |
toothed whales |
genre_facet |
toothed whales |
op_source |
The Anatomical Record volume 240, issue 4, page 598-624 ISSN 0003-276X 1097-0185 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ar.1092400417 |
container_title |
The Anatomical Record |
container_volume |
240 |
container_issue |
4 |
container_start_page |
598 |
op_container_end_page |
624 |
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1800739395093921792 |