Repositorio
Institucional

Estevez Campo, Enrique Jose

Lopez-Lazaro, Sandra#Lopez-Morago Rodriguez, Claudia#Aleman Aguilera, Inmaculada#Botella Lopez, Miguel Cecilio

Specific-age group sex estimation of infants through geometric morphometrics analysis of pubis and ischium

ELSEVIER IRELAND LTD

FORENSIC SCIENCE INTERNATIONAL

en

Sex determination of unknown individuals is one of the primary goals of Physical and Forensic Anthropology. The adult skeleton can be sexed using both morphological and metric traits on a large number of bones. The human pelvis is often used as an important element of adult sex determination. However, studies carried out about the pelvic bone in subadult individuals present several limitations due the absence of sexually dimorphic characteristics. In this study, we analyse the sexual dimorphism of the immature pubis and ischium bones, attending to their shape (Procrustes residuals) and size (centroid size), using an identified sample of subadult individuals composed of 58 individuals for the pubis and 83 for the ischium, aged between birth and 1 year of life, from the Granada osteological collection of identified infants (Granada, Spain). Geometric morphometric methods and discriminant analysis were applied to this study. The results of intra- and inter-observer error showed good and excellent agreement in the location of coordinates of landmarks and semilandmarks, respectively. Principal component analysis performed on shape and size variables showed superposition of the two sexes, suggesting a low degree of sexual dimorphism. Canonical variable analysis did not show significant changes between the male and female shapes. As a consequence, discriminant analysis with leave-one-out cross validation provided low classification accuracy. The results suggested a low degree of sexual dimorphism supported by significant sexual dimorphism in the subadult sample and poor cross-validated classification accuracy. The inclusion of centroid size as a discriminant variable does not imply a significant improvement in the results of the analysis. The similarities found between the sexes prevent consideration of pubic and ischial morphology as a sex estimator in early stages of development. The authors suggest extending this study by analysing the different trajectories of shape and size in later ontogeny between males and females. (C) 2018 Elsevier B.V. All rights reserved.

Artículo original

10.1016/j.forsciint.2018.03.012

pdf

Geometric morphometrics# Sex assessment# Sexual dimorphism juvenile# Pubis# Ischium# Forensic anthropology

http://dx.doi.org/10.1016/j.forsciint.2018.03.012

Medicine, Legal

Morfometría geométrica# Evaluación de sexo# Dimorfismo sexual juvenil# Pubis# isquion# Antropología forense

Antropología

Anatomía y Morfología

Ciencia Forense

WOS:000429779600029

Specific-age group sex estimation of infants through geometric morphometrics analysis of pubis and ischium

Artículo original

version publicada

ELSEVIER IRELAND LTD

FORENSIC SCIENCE INTERNATIONAL

Medicina Legal

0379-0738

en

pdf

hibrida#verde

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