| Interspecific analysis of covariance structure in the masticatory apparatus of galagos. | |
| | |
MedLine Citation:
|
PMID: 17171669 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The primate masticatory apparatus (MA) is a functionally integrated set of features, each of which performs important functions in biting, ingestive, and chewing behaviors. A comparison of morphological covariance structure among species for these MA features will help us to further understand the evolutionary history of this region. In this exploratory analysis, the covariance structure of the MA is compared across seven galago species to investigate 1) whether there are differences in covariance structure in this region, and 2) if so, how has this covariation changed with respect to size, MA form, diet, and/or phylogeny? Ten measurements of the MA functionally related to bite force production and load resistance were obtained from 218 adults of seven galago species. Correlation matrices were generated for these 10 dimensions and compared among species via matrix correlations and Mantel tests. Subsequently, pairwise covariance disparity in the MA was estimated as a measure of difference in covariance structure between species. Covariance disparity estimates were correlated with pairwise distances related to differences in body size, MA size and shape, genetic distance (based on cytochrome-b sequences) and percentage of dietary foods to determine whether one or more of these factors is linked to differences in covariance structure. Galagos differ in MA covariance structure. Body size appears to be a major factor correlated with differences in covariance structure among galagos. The largest galago species, Otolemur crassicaudatus, exhibits large differences in body mass and covariance structure relative to other galagos, and thus plays a primary role in creating this association. MA size and shape do not correlate with covariance structure when body mass is held constant. Diet also shows no association. Genetic distance is significantly negatively correlated with covariance disparity when body mass is held constant, but this correlation appears to be a function of the small body size and large genetic distance for Galagoides demidoff. These exploratory results indicate that changing body size may have been a key factor in the evolution of the galago MA. |
| | |
Authors:
|
Christopher J Vinyard |
Related Documents
:
|
9061939 - A suite of falcon single-locus minisatellite probes: a powerful alternative to dna fing... 18841199 - Hybridization among three native north american canis species in a region of natural sy... 21157499 - Genetic mapping of adaptive wing size variation in drosophila simulans. 1232029 - The study of genic variation by electrophoretic and heat denaturation techniques at the... 12715049 - Does advertisement call variation coincide with genetic variation in the genetically di... 19697969 - Some haliotrema (monogenea: dactylogyridae) from cultured grouper (epinephelus spp.) wi... 11084029 - A pathogenic presenilin-1 deletion causes abberrant abeta 42 production in the absence ... 12524349 - Persistence of mhc heterozygosity in homozygous clonal killifish, rivulus marmoratus: i... 16180199 - Darwin and mendel: who was the pioneer of genetics? |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: American journal of primatology Volume: 69 ISSN: 0275-2565 ISO Abbreviation: Am. J. Primatol. Publication Date: 2007 Jan |
Date Detail:
|
Created Date: 2006-12-20 Completed Date: 2007-02-08 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8108949 Medline TA: Am J Primatol Country: United States |
Other Details:
|
Languages: eng Pagination: 46-58 Citation Subset: IM |
Affiliation:
|
Department of Anatomy, Northeastern Ohio Universities College of Medicine, Rootstown, Ohio 44272-0095, USA. cvinyard@neoucom.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Biomechanics Body Size Diet Jaw / anatomy & histology*, physiology Lorisidae / anatomy & histology*, physiology Mastication / physiology Multivariate Analysis Phylogeny |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Early evolution and biogeography of lorisiform strepsirrhines.
Next Document: Perinatal size and maturation of the olfactory and vomeronasal neuroepithelia in lorisoids and lemur...