1
40
2
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Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ajpa.20992" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ajpa.20992</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
368-381
Issue
3
Volume
139
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Food Mechanical Properties in Three Sympatric Species of Hapalemur in Ranomafana National Park, Madagascar
Publisher
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American Journal of Physical Anthropology
Date
A point or period of time associated with an event in the lifecycle of the resource
2009
2009-07
Subject
The topic of the resource
Anthropology; bamboo lemur; diet; evolution; Evolutionary Biology; fracture-toughness; genus cebus; hardness; macaca-fascicularis; mechanical properties; morphology; patterns; primates
Creator
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Yamashita N; Vinyard C J; Tan C L
Description
An account of the resource
We investigated mechanical dietary properties of sympatric bamboo lemurs, Hapalemur g. griseus, H. aureus, and H. (Prolemur) simus, in Ranomafana National Park, Madagascar. Each lemur species relies on bamboo, though previous behavioral observations found that they specialize on different parts of a common resource (Tan: Int J Primatol 20 [1999] 547-566; Tan: PhD dissertation [2000] State University of New York, Stony Brook). On the basis of these earlier behavioral ecology studies, we hypothesized that specialization on bamboo is related to differences in mechanical properties of specific parts. We quantified mechanical properties of individual plant parts from the diets of the bamboo lemur species using a portable tester. The diets of the Hapalemur spp. exhibited high levels of mechanical heterogeneity. The lemurs, however, could be segregated based on the most challenging (i.e., mechanically demanding) foods. Giant bamboo culm pith was the toughest and stiffest food eaten, and its sole lemur consumer, H. simus, had the most challenging diet. However, the mechanical dietary properties of H. simus and H. aureus overlapped considerably. In the cases where lemur species converged on the same bamboo part, the size of the part eaten increased with body size. Plant parts that were harvested orally but not necessarily masticated were the most demanding, indicating that food preparation may place significant loads on the masticatory apparatus. Finally, we describe how mechanical properties can influence feeding behavior. The elaborate procurement processes of H. simus feeding on culm pith and H. griseus and H. aureus feeding on young leaf bases are related to the toughnesses of protective coverings and the lemurs' exploitation of mechanical vulnerabilities in these plants. Am J Phys Anthropol 139:368-381, 2009. (C) 2008 Wiley-Liss, Inc.
Identifier
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<a href="http://doi.org/10.1002/ajpa.20992" target="_blank" rel="noreferrer noopener">10.1002/ajpa.20992</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2009
American journal of physical anthropology
Anthropology
bamboo lemur
Diet
Evolution
Evolutionary Biology
fracture-toughness
genus cebus
hardness
Journal Article
macaca-fascicularis
mechanical properties
morphology
patterns
Primates
Tan C L
Vinyard C J
Yamashita N
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ajp.20189" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ajp.20189</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
329-346
Issue
3
Volume
67
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Mechanical properties of foods used in experimental studies of primate masticatory function
Publisher
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American Journal of Primatology
Date
A point or period of time associated with an event in the lifecycle of the resource
2005
2005-11
Subject
The topic of the resource
biomechanical analysis; elastic modulus; etectromyography; fracture-toughness; fracture-toughness; genus cebus; jaw; lateral pterygoid muscle; macaca-fascicularis; mandibular symphysis; masseter force; mechanical properties; movement; old-world monkeys; periodontal mechanoreceptive afferents; Zoology
Creator
An entity primarily responsible for making the resource
Williams S H; Wright B W; Den Truong V; Daubert C R; Vinyard C J
Description
An account of the resource
In vivo studies, of jaw-muscle behavior have been integral factors in the development of our current understanding of the primate masticatory apparatus. However, even though it has been shown that food textures and mechanical properties influence jaw-muscle activity during mastication, very little effort has been made to quantify the relationship between the elicited masticatory responses of the subject and the mechanical proper-ties of the foods that are eaten. Recent work on human mastication highlights the importance of two mechanical properties-toughness and elastic modulus (i.e., stiffness)-for food breakdown during mastication. Here we provide data on the toughness and elastic modulus of the majority of foods used in experimental studies of the nonhuman primate masticatory apparatus. Food toughness ranges from approximately 56.97Jm(-2) (apple pulp) to 4355.45 Jm(-2) (prune pit). The elastic modulus of the experimental foods ranges from 0.07 MPa for gummy bears to 346 MPa for popcorn kernels. These data can help researchers studying primate mastication select among several potential foods with broadly similar mechanical properties. Moreover, they provide a framework for understanding how jaw-muscle activity varies with food mechanical properties in these studies.
Identifier
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<a href="http://doi.org/10.1002/ajp.20189" target="_blank" rel="noreferrer noopener">10.1002/ajp.20189</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2005
American journal of primatology
biomechanical analysis
Daubert C R
Den Truong V
Elastic Modulus
etectromyography
fracture-toughness
genus cebus
jaw
Journal Article
lateral pterygoid muscle
macaca-fascicularis
mandibular symphysis
masseter force
mechanical properties
Movement
old-world monkeys
periodontal mechanoreceptive afferents
Vinyard C J
Williams S H
Wright B W
Zoology