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Musculoskeletal scapular correlates of plantigrade and acrobatic positional activities in Papio cynocephalus anubis and Macaca fascicularis
Author(s) -
Kimes Kyle R.,
Siegel Michael I.,
Sadler Deborah L.
Publication year - 1981
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330550407
Subject(s) - quadrupedalism , papio anubis , primate , biology , anatomy , scapula , psychology , evolutionary biology , neuroscience , ecology , baboon
This study investigates several musculoskeletal scapular correlates of quadrupedal behavior in predominantly plantigrade, Papio cynocephalus anubis and acrobatic, less plantigrade, Macaca fascicularis . Positional behaviors differ in these two primates reflecting the amount of time spent emphasizing one or the other of these captive behavioral regimes. Stresses associated with particular patterns of behavior result in different scapular morphologies. Papio exhibits a significantly broader scapula with a more dorsoventrally curved blade accompanying an enlarged teres major muscle. The supraspinous fossa is wider in Papio , while the infraspinous/teres major attachment is wider in Macaca . Angular measurements reflect the breadth dimension of the various fossae. These results utilize two species of primates to extend a methodology developed in previous studies and to suggest that a predictable interdependence occurs between scapular dimensions and certain behavioral activities.