Diversity Of Mandibular Morphology In Some Carnivorans
Abstract Comparison of mandibular morphology of some aquatic (seals, walruses, and sea otters) and terrestrial (hyenas and pandas) carnivorans demonstrates a rather general pattern correlating size of condyloid angle, size of gape, and diet. Structural differences of carnivoran jaws reveal morpholog...
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crdegruyter:10.1515/vzoo-2015-0028 2023-05-15T16:05:19+02:00 Diversity Of Mandibular Morphology In Some Carnivorans Rahmat, S. J. Koretsky, I. A. 2015 http://dx.doi.org/10.1515/vzoo-2015-0028 http://content.sciendo.com/view/journals/vzoo/49/3/article-p267.xml https://www.degruyter.com/view/j/vzoo.2015.49.issue-3/vzoo-2015-0028/vzoo-2015-0028.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0/ CC-BY-NC-ND Vestnik Zoologii volume 49, issue 3, page 267-284 ISSN 2073-2333 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2015 crdegruyter https://doi.org/10.1515/vzoo-2015-0028 2022-04-14T05:07:35Z Abstract Comparison of mandibular morphology of some aquatic (seals, walruses, and sea otters) and terrestrial (hyenas and pandas) carnivorans demonstrates a rather general pattern correlating size of condyloid angle, size of gape, and diet. Structural differences of carnivoran jaws reveal morphological and ecological adaptations that are directly correlated with availability of prey, diving depth, feeding competition and specialized feeding methods. Specifically, the inclination of the condyloid process relative to the axis of the alveolar row (= condyloid angle) can be used to determine dietary preferences, including size of prey. Generally, carnivorans with a large condyloid angle feed on larger prey, while a low condyloid angle suggests feeding on small prey or can be an advantageous feeding mechanism. Mirounga angustirostris (Northern elephant seal) displays sex-specific characters in cranial and postcranial elements. Likewise, significant sexually dimorphic differences in the size of condyloid angle imply that deeper-diving male Northern elephant seals have a feeding niche dissimilar to that of females. Morphological assessment of male M. angustirostris suggests they are bottom-feeding seals that utilize a suction-feeding mechanism to capture small prey and crush shells with their teeth, which become weaker as they age. Article in Journal/Newspaper Elephant Seal Elephant Seals walrus* De Gruyter (via Crossref) Vestnik Zoologii 49 3 267 284 |
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Open Polar |
collection |
De Gruyter (via Crossref) |
op_collection_id |
crdegruyter |
language |
unknown |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Rahmat, S. J. Koretsky, I. A. Diversity Of Mandibular Morphology In Some Carnivorans |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Comparison of mandibular morphology of some aquatic (seals, walruses, and sea otters) and terrestrial (hyenas and pandas) carnivorans demonstrates a rather general pattern correlating size of condyloid angle, size of gape, and diet. Structural differences of carnivoran jaws reveal morphological and ecological adaptations that are directly correlated with availability of prey, diving depth, feeding competition and specialized feeding methods. Specifically, the inclination of the condyloid process relative to the axis of the alveolar row (= condyloid angle) can be used to determine dietary preferences, including size of prey. Generally, carnivorans with a large condyloid angle feed on larger prey, while a low condyloid angle suggests feeding on small prey or can be an advantageous feeding mechanism. Mirounga angustirostris (Northern elephant seal) displays sex-specific characters in cranial and postcranial elements. Likewise, significant sexually dimorphic differences in the size of condyloid angle imply that deeper-diving male Northern elephant seals have a feeding niche dissimilar to that of females. Morphological assessment of male M. angustirostris suggests they are bottom-feeding seals that utilize a suction-feeding mechanism to capture small prey and crush shells with their teeth, which become weaker as they age. |
format |
Article in Journal/Newspaper |
author |
Rahmat, S. J. Koretsky, I. A. |
author_facet |
Rahmat, S. J. Koretsky, I. A. |
author_sort |
Rahmat, S. J. |
title |
Diversity Of Mandibular Morphology In Some Carnivorans |
title_short |
Diversity Of Mandibular Morphology In Some Carnivorans |
title_full |
Diversity Of Mandibular Morphology In Some Carnivorans |
title_fullStr |
Diversity Of Mandibular Morphology In Some Carnivorans |
title_full_unstemmed |
Diversity Of Mandibular Morphology In Some Carnivorans |
title_sort |
diversity of mandibular morphology in some carnivorans |
publisher |
Walter de Gruyter GmbH |
publishDate |
2015 |
url |
http://dx.doi.org/10.1515/vzoo-2015-0028 http://content.sciendo.com/view/journals/vzoo/49/3/article-p267.xml https://www.degruyter.com/view/j/vzoo.2015.49.issue-3/vzoo-2015-0028/vzoo-2015-0028.pdf |
genre |
Elephant Seal Elephant Seals walrus* |
genre_facet |
Elephant Seal Elephant Seals walrus* |
op_source |
Vestnik Zoologii volume 49, issue 3, page 267-284 ISSN 2073-2333 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1515/vzoo-2015-0028 |
container_title |
Vestnik Zoologii |
container_volume |
49 |
container_issue |
3 |
container_start_page |
267 |
op_container_end_page |
284 |
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1766401212315336704 |