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Shape, size, and maturity trajectories of the human ilium

Wilson, Laura A.B. ; Ives, Rachel ; Cardoso, Hugo F.V. ; Humphrey, Louise T.

American journal of physical anthropology, 2015-01, Vol.156 (1), p.19-34 [Periódico revisado por pares]

United States: Blackwell Publishing Ltd

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  • Título:
    Shape, size, and maturity trajectories of the human ilium
  • Autor: Wilson, Laura A.B. ; Ives, Rachel ; Cardoso, Hugo F.V. ; Humphrey, Louise T.
  • Assuntos: Adolescent ; Analysis of Variance ; Anthropology, Physical ; Child ; Child, Preschool ; development ; Female ; geometric morphometrics ; Geometry ; growth ; Humans ; Ilium - anatomy & histology ; Ilium - growth & development ; Infant ; Infant, Newborn ; juvenile sex determination ; Male ; Morphology ; Ontogeny ; Physical anthropology ; postcranial skeleton ; Quantitative analysis ; Sex Determination by Skeleton ; Sexuality ; United Kingdom
  • É parte de: American journal of physical anthropology, 2015-01, Vol.156 (1), p.19-34
  • Notas: istex:027B781715937E2B5980A24F0F866EE9DF95F9D5
    ark:/67375/WNG-TZR91F2W-M
    ArticleID:AJPA22625
    Swiss National Science Foundation (SNF) - No. PBZHP3_141470; No. P300P3_151189
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: ABSTRACT Morphological traits of the ilium have consistently been more successful for juvenile sex determination than have techniques applied to other skeletal elements, however relatively little is known about the ontogeny and maturation of size and shape dimorphism in the ilium. We use a geometric morphometric approach to quantitatively separate the ontogeny of size and shape of the ilium, and analyze interpopulation differences in the onset, rate and patterning of sexual dimorphism. We captured the shape of three traits for a total of 191 ilia from Lisbon (Portugal) and London (UK) samples of known age and sex (0–17 years). Our results indicate that a) there is a clear dissociation between the ontogeny of size and shape in males and females, b) the ontogeny of size and shape are each defined by non‐linear trajectories that differ between the sexes, c) there are interpopulation differences in ontogenetic shape trajectories, which point to population‐specific patterning in the attainment of sexual dimorphism, and d) the rate of shape maturation and size maturation is typically higher for females than males. Male and female shape differences in the ilium are brought about by trajectory divergence. Differences in size and shape maturation between the sexes suggest that maturity may confound our ability to discriminate between the sexes by introducing variation not accounted for in age‐based groupings. The accuracy of sex determination methods using the ilium may be improved by the use of different traits for particular age groups, to capture the ontogenetic development of shape in both sexes. Am J Phys Anthropol 156:19–34, 2015 © 2014 Wiley Periodicals, Inc.
  • Editor: United States: Blackwell Publishing Ltd
  • Idioma: Inglês
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