Sexual Dimorphism Determination from the Lineal Dimensions of Skulls Determinaci車n del Dimorfismo Sexual utilizando las Dimensiones Lineales del Cr芍neo

作者：Daniela Alejandra Zavando Matamala; Ivan Claudio Suazo Galdames; Ricardo Luiz Smith

来源：International Journal of Morphology, 2009.

• Puntos craneometricos
• Craneo
• Dimorfismo sexual
• Analisis de la funcion discriminante
• Craniometries points
• Skull
• Sexual dimorphism
• Discriminant function

The sex determination from human skulls can be made by means of morphologic and morphometric methods have been broadly studied. These methods contribute with objective data; however, they present interpopulational variability. The purpose of this article is to determine sexual dimorphism using lineal dimensions in a sample of human skulls collection belonging to the Universidade Federal de Sao Paulo (UNIFESP), calculating the discriminant function. To complete the selection approaches, 226 skulls were analyzed. Mensurements were carried out among the following reference points of the skull: right Eurion- left Eurion (Eu - Eu), Glabella-Opisthocranion (Gla - Op), Basion - Bregma (Ba-Br), Nasion - Prosthion (Na-Pr), Bizigomatic (Zi-Zi), Maximal width of the piriform aperture (MWPA), and Nasion - Spinal (Na-ANS). Descriptive and inferential statistics (student%26apos;s t-test proved p %26lt;0.05, analysis of discriminant function) for sex were calculated. Statistically significant differences were seen in the following dimensions: Gla - Op, Na - Pro, Zi - Zi, and Na - ANS. Only for the distances Zi - Zi and Na-ANS, a discriminant function with a yield of 82% was identified for the correct classification for sex. The authors conclude that the lineal dimensions present a limited utility for sexual dimorphism in this sample. La determinaci車n del sexo a partir de cr芍neos humanos por m谷todos morfol車gicos cualitativos y morfom谷tricos ha sido ampliamente estudiada. 谷stos 迆ltimos se destacan por aportar datos objetivos; sin embargo, presentan variabilidad inter-poblacional. Los objetivos de este trabajo fueron: a) evaluar el dimorfismo sexual por medio de las dimensiones lineales, en una muestra de cr芍neos adultos pertenecientes a la Universidade F ederal de Sao Paulo (UNIFESP); b) construir una funci車n discriminante y c) evaluar su rendimiento. Se analizaron 226 cr芍neos que cumplieron los criterios de selecci車n. Se realizaron las mediciones entre los siguientes puntos craneom谷tricos: Eurion derecho- eurion izquierdo (Eu - Eu), Glabella- Opistocr芍neo (Gla - Op), Basion - Bregma (Ba-Br), Nasion - Prostion (Na-Pr), Bicigom芍tica (Zi-Zi), Ancho m芍ximo de la Apertura Piriforme (AMAP), Nasion - Espinal (Na-Es). Se calcularon estad赤sticos descriptivos e inferenciales (prueba t student p%26lt; 0.05, an芍lisis de funci車n discriminante) por sexo. Se establecieron diferencias estad赤sticamente significativas en las dimensiones Gla - Op, Na - Pro, Zi - Zi, Na - Es. S車lo las distancias Zi - Zi y Na-Es fueron capaces de componer una funci車n discriminante con un rendimiento del 82%, para la correc