Humeral epiphyseal shape in the Felidae: the influence of phylogeny, allometry and locomotion

Walmsley, Anthony, Elton, Sarah, Louys, Julien, Bishop, Laura C. and Meloro, Carlo (2012) Humeral epiphyseal shape in the Felidae: the influence of phylogeny, allometry and locomotion. Journal of Morphology, 273 12: 1424-1438. doi:10.1002/jmor.20084

Author Walmsley, Anthony
Elton, Sarah
Louys, Julien
Bishop, Laura C.
Meloro, Carlo
Title Humeral epiphyseal shape in the Felidae: the influence of phylogeny, allometry and locomotion
Journal name Journal of Morphology   Check publisher's open access policy
ISSN 0362-2525
Publication date 2012-10-15
Sub-type Article (original research)
DOI 10.1002/jmor.20084
Volume 273
Issue 12
Start page 1424
End page 1438
Total pages 15
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Collection year 2013
Language eng
Abstract Bone morphology of the cats (Mammalia: Felidae) is influenced by many factors, including locomotor mode, body size, hunting methods, prey size and phylogeny. Here, we investigate the shape of the proximal and distal humeral epiphyses in extant species of the felids, based on two-dimensional landmark configurations. Geometric morphometric techniques were used to describe shape differences in the context of phylogeny, allometry and locomotion. The influence of these factors on epiphyseal shape was assessed using Principal Component Analysis, Linear Discriminant functions and multivariate regression. Phylogenetic Generalised Least Squares was used to examine the association between size or locomotion and humeral epiphyseal shape, after taking a phylogenetic error term into account. Results show marked differences in epiphyseal shape between felid lineages, with a relatively large phylogenetic influence. Additionally, the adaptive influences of size and locomotion are demonstrated, and their influence is independent of phylogeny in most, but not all, cases. Several features of epiphyseal shape are common to the largest terrestrial felids, including a relative reduction in the surface area of the humeral head and increased robusticity of structures that provide attachment for jointstabilising muscles, including the medial epicondyle and the greater and lesser tubercles. This increased robusticity is a functional response to the increased loading forces placed on the joints due to large body mass.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2013 Collection
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Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 15 times in Scopus Article | Citations
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Created: Wed, 10 Apr 2013, 14:10:21 EST by Ashleigh Paroz on behalf of School of Earth Sciences