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Text
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URL Address
<a href="http://doi.org/10.1371/journal.pone.0156753" target="_blank" rel="noreferrer noopener">http://doi.org/10.1371/journal.pone.0156753</a>
Pages
e0156753–e0156753
Issue
6
Volume
11
Dublin Core
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Title
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Severe Bone Loss as Part of the Life History Strategy of Bowhead Whales.
Publisher
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PloS one
Date
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2016
2016
Subject
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Animals; *Life History Traits; Bone and Bones/diagnostic imaging/pathology; Bone Resorption/*pathology; Bowhead Whale/*growth & development; Tomography; X-Ray Computed; Computer-Assisted; Image Processing
Creator
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George John C; Stimmelmayr Raphaela; Suydam Robert; Usip Sharon; Givens Geof; Sformo Todd; Thewissen J G M
Description
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The evolution of baleen constituted a major evolutionary change that made it possible for baleen whales to reach enormous body sizes while filter feeding on tiny organisms and migrating over tremendous distances. Bowhead whales (Balaena mysticetus) live in the Arctic where the annual cycle of increasing and decreasing ice cover affects their habitat, prey, and migration. During the nursing period, bowheads grow rapidly; but between weaning and approximately year 5, bowhead whales display sustained baleen and head growth while limiting growth in the rest of their bodies. During this period, they withdraw resources from the skeleton, in particular the ribs, which may lose 40% of bone mass. Such dramatic changes in bones of immature mammals are rare, although fossil cetaceans between 40 and 50 million years ago show an array of rib specializations that include bone loss and are usually interpreted as related to buoyancy control.
Identifier
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<a href="http://doi.org/10.1371/journal.pone.0156753" target="_blank" rel="noreferrer noopener">10.1371/journal.pone.0156753</a>
Rights
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
*Life History Traits
2016
Animals
Bone and Bones/diagnostic imaging/pathology
Bone Resorption/*pathology
Bowhead Whale/*growth & development
Computer-Assisted
Department of Anatomy & Neurobiology
George John C
Givens Geof
Image Processing
NEOMED College of Medicine
PloS one
Sformo Todd
Stimmelmayr Raphaela
Suydam Robert
Thewissen J G M
Tomography
Usip Sharon
X-Ray Computed