Consulta: subjectFacets:"Large hairy armadillo"
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Data/hora: 08/06/2024 02:34:56

A geometric morphometric study of sex differences in the scapula, humerus and ulna of Chaetophractus villosus (Xenarthra, Dasypodidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Acuña,Francisco; Sidorkewicj,Nora S.; Popp,Albertina I.; Casanave,Emma B.
ABSTRACT Sexual differences in some of the components of the pectoral girdle and forelimb of Chaetophractus villosus (Desmarest, 1804) were investigated by means of geometric morphometrics. A total of 15 scapulae (7 males, 8 females) and 50 humeri-ulnae complexes (24 males, 26 females) were examined. No size differences were detected between sexes for any of the bones, but shape differences were found for the humerus and the ulna that enhance the in-forces or the related in-levers. Females had a more robust humerus, with an enlarged deltoid tuberosity, a more spherical head, higher tubercular and epicondylar widths, and more developed supracondylar crests. The ulna of the females was characterised by a more pronounced curvature along its main axis, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Large hairy armadillo; Fossorial mammals; Shape-based dimorphism; Appendicular skeleton.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100210