1
40
3
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Text
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URL Address
<a href="http://doi.org/10.1002/ajpa.21178" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ajpa.21178</a>
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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).
Pages
583-593
Issue
4
Volume
141
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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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Trabecular Bone Structure in the Mandibular Condyles of Gouging and Nongouging Platyrrhine Primates
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
2010
2010-04
Subject
The topic of the resource
Anthropology; architecture; biomechanics; bone; callithrix-jacchus; callitrichids; cancellous; cortical bone; elastic principal directions; Evolutionary Biology; femoral-head; fossil record; iterative selection method; jaw functional morphology; marmosets; mechanical properties; tamarins; temporomandibular-joint
Creator
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Ryan T M; Colbert M; Ketcham R A; Vinyard C J
Description
An account of the resource
The relationship between mandibular form and biomechanical function is a topic of significant interest to morphologists and paleontologists alike. Several previous studies have examined the morphology of the mandible in gouging and nongouging primates as a means of understanding the anatomical correlates of this feeding behavior. The goal of the current study was to quantify the trabecular bone structure of the mandibular condyle of gouging and nongouging primates to assess the functional morphology of the jaw in these animals. High-resolution computed tomography scan data were collected from the mandibles of five adult common marmosets (Callithrix jacchus), saddle-back tamarins (Saguinus fuscicollis), and squirrel monkeys (Saimiri sciureus), respectively, and various three-dimensional morphometric parameters were measured from the condylar trabecular bone. No significant differences were found among the taxa for most trabecular bone structural features. Importantly, no mechanically significant parameters, such as bone volume fraction and degree of anisotropy, were found to vary significantly between gouging and nongouging primates. The lack of significant differences in mechanically relevant structural parameters among these three platyrrhine taxa may suggest that gouging as a habitual dietary behavior does not involve significantly higher loads on the mandibular condyle than other masticatory behaviors. Alternatively, the similarities in trabecular architecture across these three taxa may indicate that trabecular bone is relatively unimportant mechanically in the condyle of these primates and therefore is functionally uninformative. Am J Phys Anthropol 141:583-593, 2010. (C) 2009 Wiley-Liss, Inc.
Identifier
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<a href="http://doi.org/10.1002/ajpa.21178" target="_blank" rel="noreferrer noopener">10.1002/ajpa.21178</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2010
American journal of physical anthropology
Anthropology
architecture
biomechanics
Bone
callithrix-jacchus
callitrichids
cancellous
Colbert M
cortical bone
elastic principal directions
Evolutionary Biology
femoral-head
fossil record
iterative selection method
jaw functional morphology
Journal Article
Ketcham R A
marmosets
mechanical properties
Ryan T M
tamarins
temporomandibular-joint
Vinyard C J
-
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/10.1007/s10764-006-9083-7" target="_blank" rel="noreferrer noopener">http://doi.org/10.1007/s10764-006-9083-7</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
1461-1490
Issue
5
Volume
27
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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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Cross-sectional bone distribution in the mandibles of gouging and non-gouging platyrrhini
Publisher
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International Journal of Primatology
Date
A point or period of time associated with an event in the lifecycle of the resource
2006
2006-10
Subject
The topic of the resource
bone biomechanics; callithrix-jacchus; cross-sectional geometry; form; functional-significance; iterative selection method; jaw functional morphology; load resistance; macaca-fascicularis; mandibular corpus; morphology; new-world monkeys; primates; stress; tree gouging; Zoology
Creator
An entity primarily responsible for making the resource
Vinyard C J; Ryan T M
Description
An account of the resource
Recent morphometric analyses have led to dissimilar conclusions about whether the jaws of tree-gouging primates are designed to resist the purportedly large forces generated during this biting behavior. We further address this question by comparing the cross-sectional geometry of the mandibular corpus and symphysis in tree-gouging common marmosets (Callithrix jacchus) to nongouging saddleback tamarins (Saguinus fuscicollis) and squirrel monkeys (Saimiri sciureus). As might be expected, based on size, squirrel monkeys tend to have absolutely larger cross-sectional areas at each tooth location sampled, while saddleback tamarins are intermediate, followed by the smaller common marmosets. Similarly, the amount and distribution of cortical bone in squirrel monkey jaws provides them with increased ability to resist sagittal bending (I (xx) ) and torsion (K) in the corpus as well as coronal bending (I (xx) ) and shearing in the symphysis. However, when the biomechanical parameters are scaled to respective load arm estimates, there are few significant differences in relative resistance abilities among the 3 species. A power analysis indicates that we cannot statistically rule out subtle changes in marmoset jaw form linked to resisting loads during gouging. Nevertheless, our results correspond to studies in vivo of jaw loading, field data, and other comparative analyses suggesting that common marmosets do not generate relatively large bite forces during tree gouging. The 3 species are like most other anthropoids in having thinner bone on the lingual than on the buccal side of the mandibular corpus at M-1. The similarity in corporal shape across anthropoids supports a hypothesized stereotypical pattern of jaw loading during chewing and may indicate a conserved pattern of mandibular growth for the suborder. Despite the overall similarity, platyrrhines may differ slightly from catarrhines in the details of their cortical bone distribution.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1007/s10764-006-9083-7" target="_blank" rel="noreferrer noopener">10.1007/s10764-006-9083-7</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2006
bone biomechanics
callithrix-jacchus
cross-sectional geometry
form
functional-significance
international journal of primatology
iterative selection method
jaw functional morphology
Journal Article
load resistance
macaca-fascicularis
mandibular corpus
morphology
new-world monkeys
Primates
Ryan T M
Stress
tree gouging
Vinyard C J
Zoology
-
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/10.1007/s10764-007-9178-9" target="_blank" rel="noreferrer noopener">http://doi.org/10.1007/s10764-007-9178-9</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
1421-1439
Issue
6
Volume
29
Search for Full-text
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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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Linking Laboratory and Field Approaches in Studying the Evolutionary Physiology of Biting in Bamboo Lemurs
Publisher
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International Journal of Primatology
Date
A point or period of time associated with an event in the lifecycle of the resource
2008
2008-12
Subject
The topic of the resource
bamboo; bite force; biting; bone strain; galago crassicaudatus; indian anolis; jaw functional morphology; lizard sceloporus-merriami; lizards; load resistance; locomotor performance; macaca-fascicularis; mandibular function; periodontal mechanoreceptors; ranomafana national-park; Zoology
Creator
An entity primarily responsible for making the resource
Vinyard C; Yamashita N; Tan C
Description
An account of the resource
A realistic understanding of primate morphological adaptations requires a multidisciplinary approach including experimental studies of physiological performance and field studies documenting natural behaviors and reproductive success. For primate feeding, integrative efforts combining experimental and ecological approaches are rare. We discuss methods for collecting maximum bite forces in the field as part of an integrated ecomorphological research design. Specifically, we compare maximum biting ability in 3 sympatric bamboo lemurs (Hapalemur simus, H. aureus, and H. griseus) at Ranomafana National Park, Madagascar to determine if biting performance contributes to the observed partitioning of a shared bamboo diet. We assessed performance by recording maximum bite forces via jaw-muscle stimulations in anesthetized subjects from each species. Behavioral observations and food properties testing show that the largest species, Hapalemur simus, consumes the largest and most mechanically challenging foods. Our results suggest that Hapalemur simus can generate larger bite forces on average than those of the 2 smaller species. However, the overlap in maximum biting ability between Hapalemur simus and H. aureus indicates that biting performance cannot be the sole factor driving dietary segregation. Though maximum bite force does not fully explain dietary segregation, we hypothesize that size-related increases in both maximum bite force and jaw robusticity provide Hapalemur simus with an improved ability to process routinely its more obdurate diet. We demonstrate the feasibility of collecting physiological, ecological, and morphological data on the same free-ranging primates in their natural habitats. Integrating traditionally laboratory-based approaches with field studies broadens the range of potential primate species for physiological research and fosters improved tests of hypothesized feeding adaptations.
Identifier
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<a href="http://doi.org/10.1007/s10764-007-9178-9" target="_blank" rel="noreferrer noopener">10.1007/s10764-007-9178-9</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2008
bamboo
Bite Force
biting
bone strain
galago crassicaudatus
indian anolis
international journal of primatology
jaw functional morphology
Journal Article
lizard sceloporus-merriami
lizards
load resistance
locomotor performance
macaca-fascicularis
mandibular function
periodontal mechanoreceptors
ranomafana national-park
Tan C
Vinyard C
Yamashita N
Zoology