Ontogeny of material stiffness heterogeneity in the macaque mandibular corpus

Bibliographic Data

ID8313849
AuthorsDavid J Daegling (0000-0002-0108-8986, Department of Anthropology 1112 Turlington Hall, University of Florida Gainesville FL 32611, corresponding author), Michael C Granatosky (0000-0002-6465-5386, Department of Evolutionary Anthropology 201 Biological Sciences Building, PO Box 90383, Duke University Durham NC 27708), W S Mcgraw (0000-0003-1986-7408, The Ohio State University)
Year2014
Volume153
Issue2
Pages297-304
Publication date2014-02-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Physical Anthropology (JOURNAL)
Journal identifiersISSN: 0002-9483 • E-ISSN: 1096-8644
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajpa.22432
PMID24282152
OpenAlexW1945127041
LanguageEN
Citations received4
References cited61

Evidence is accumulating that bone material stiffness increases during ontogeny, and the role of elastic modulus in conditioning attributes of strength and toughness is therefore a focus of ongoing investigation. Developmental changes in structural properties of the primate mandible have been documented, but comparatively little is known about changes in material heterogeneity and their impact on biomechanical behavior. We examine a cross‐sectional sample of Macaca fascicularis ( N = 14) to investigate a series of hypotheses that collectively evaluate whether the patterning of material stiffness (elastic modulus) heterogeneity in the mandible differs among juvenile, subadult and adult individuals. Because differences in age‐related activity patterns are known to influence bone stiffness and strength, these data are potentially useful for understanding the relationship between feeding behavior on the one hand and material and structural properties of the mandible on the other. Elastic modulus is shown to be spatially dependent regardless of age, with this dependence being explicable primarily by differences in alveolar versus basal cortical bone. Elastic modulus does not differ consistently between buccal and lingual cortical plates, despite likely differences in the biomechanical milieu of these regions. Since we found only weak support for the hypothesis that the spatial patterning of heterogeneity becomes more predictable with age, accumulated load history may not account for regional differences in bone material properties in mature individuals with respect to the mandibular corpus. Am J Phys Anthropol 153:297–304, 2014. © 2013 Wiley Periodicals, Inc

Biology · Composite material · Cortical bone · Elastic modulus · Evolutionary biology · Mandible (arthropod mouthpart) · Ontogeny · Stiffness · Anatomy · Animal Behavior and Reproduction · Animal Vocal Communication and Behavior · Ecology · Materials Science · Primate Behavior and Ecology