Home
Resource
Feeding ecology and the trabecular structure of the mandibular condyle in extant primates
PDF
PDF format is widely accepted and good for printing.
Plug-in required
PDF-1(1.75 MB)
Citation & Export
View Usage Statistics
Staff View

Citation & Export
Hide

Simple citation

Coiner-Collier, Susan F.. Feeding ecology and the trabecular structure of the mandibular condyle in extant primates. Retrieved from https://doi.org/doi:10.7282/T3HD7XKB

Export

Click here for information about Citation Management Tools at Rutgers.

Statistics
Hide

Description

TitleFeeding ecology and the trabecular structure of the mandibular condyle in extant primates
NameCoiner-Collier, Susan F. (author); Scott, Robert S (chair); Cachel, Susan M (internal member); Vogel, Erin R (internal member); Ryan, Timothy M (outside member); Rutgers University; Graduate School - New Brunswick
Date Created2015
Other Date2015-10 (degree)
SubjectAnthropology, Mandibular condyle, Food--Analysis
Extent1 online resource (xii, 202 p. : ill.)
DescriptionNo straightforward functional relationship has been established between jaw morphology and diet in extant primates despite much research devoted to this issue. Food preparation and ingestion serve to load the mandible, and because of known remodeling responses to increased mandibular strain, the expectation is that higher mechanical loads generated by mechanically challenging foods and/or repetitive loading cycles should produce changes in mandibular morphology. This dissertation examines the relationship between primate mandibular morphology—specifically, the internal trabecular structure of the mandibular condyle—and two aspects of feeding ecology: food mechanical properties (FMPs) and time spent feeding. Because dietary FMPs influence chewing behavior, more mechanically challenging foods and/or increased repetitive loading cycles are expected to produce denser and/or more anisotropic trabecular bone within the mandibular condyle. I used high-resolution X-ray computed tomography (HRXCT) to image 28 anthropoid primate mandibles, and compared the results of trabecular analyses to data on FMPs and feeding time. My results demonstrated a strong relationship between dietary toughness and trabecular anisotropy. As toughness increases, trabecular bone within the mandibular condyle becomes more anisotropic. Toughness is associated with fiber content, and fiber requires greater durations of oral processing; tougher foods may thus require a greater total number of chewing cycles, and this increased overall load appears to be associated with a functional response within the condyle. Similarly, average daily time spent feeding is associated with trabecular thickness and trabecular number, although these relationships are not as strong as that between anisotropy and toughness and are modulated by changes in body size. In accordance with previous studies of the mammalian mandibular condyle, my results showed that trabecular bone within the mandibular condyle is oriented to maximally resist the compressive forces associated with mastication. Taken together, these results support a functional dietary signal in the trabecular structure of the primate mandibular condyle. FMPs and feeding time are associated with changes in trabecular orientation and volume fraction.
NotePh.D.
NoteIncludes bibliographical references
Noteby Susan F. Coiner-Collier
Genretheses, ETD doctoral
Persistent URLhttps://doi.org/doi:10.7282/T3HD7XKB
Languageeng
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
Version 8.5.5
Rutgers University Libraries - Copyright ©2024