Premium
Evo‐devo: Evidence of developmental plasticity in the shape of the talo‐crural joint in response to substrate use.
Author(s) -
Turley Kevin,
Frost Stephen R.
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.520.8
Subject(s) - bipedalism , gorilla , arboreal locomotion , biology , ecomorphology , taxon , hominidae , anatomy , troglodytes , pan paniscus , zoology , evolutionary biology , ecology , paleontology , habitat , biological evolution , genetics
Is plasticity in joint shape observed with different substrate use? The current study examines the appositional articular morphology (AAM) of the talo‐crural joint across catarrhine primates. Matched tibiae and tali from 245 adults and 163 subadults from 6 hominoid and 6 cercopithecoid taxa ( H. sapiens, G. gorilla, P. troglodytes, P. paniscus, Pongo spp., Hylobatidae , M. fascicularis, M. mulatta, M. thibetana, P. hamadryas, C. guereza, N. larvatus ) were studied. Sixteen tibial and 15 talar landmarks were placed on laser surface scans of the articular surfaces using Landmark Editor software. Generalized Procrustes analysis, principal component analysis, multivariate regression and singular warps analysis were used to examine joint shape. Adult terrestrial taxa have features that provide flexibility and stability on horizontally placed irregular surfaces of different textures, while adult arboreal taxa medially placed curvilinear surfaces with irregular surface movement. Evidence of developmental plasticity due to substrate preference was observed. Adult articular shape sorted by substrate preference across superfamily reflecting differences in use, and when the AAM subsets were examined, subadults of both arboreal and terrestrial forms are similar, and there was little change between subadults and adults in arboreal taxa, but significant change between subadults and adults of terrestrial forms. Funding provided in part by NSF BCS0452539, and the University of Oregon, and funding to the CPRC by NIH Grant No. P40 RR003640. Grant Funding Source : University of Oregon