A New Method for Quantifying the Asymmetry of Biological Elements by Means of a Photogrammetric Technique Using a Parametric Computer-Aided Design System
Fecha
2022-11-02
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Editor
MDPI
Resumen
In the area of zoology, it is of great interest to determine the degree of asymmetry existing in the different animal structures in order to establish it as a variable (biomarker). In this study, a new methodology is proposed for obtaining this variable ‘Asymmetry Index.’ Forty-eight Ibe-rian red deer antlers (Cervus elaphus hispanicus) from hunting reserves in the province of Jaen (Spain) have been used. The degree of asymmetry of their antlers between homologous points considered in the two right and left sides of each antler was obtained. The methodology is ap-plied within a parametric Computer-Aided Design system from the photogrammetric restitu-tion of the antler from two photographs. The procedure compares the degree of asymmetry in which the points of each of the right and left sides of the antler are found by means of lengths and angles with respect to an established reference plane based on the geometry of the speci-men’s skull. As a result of the study, it has been observed that the Asymmetry Index obtained is lower in those specimens that have a high score in their hunting valuation, so it is considered that this factor can be taken into account as an objective and quantifiable indicator (biomarker).
Descripción
(Q2 Multidisciplinary Sciences, IF (2022)=2.94)
Palabras clave
Fluctuating Asymmetry, ungulates, deer antler, photogrammetry, parametric 3D modeling, landmarks
Citación
Montalvo-Gil JM, Azorit C, Valderrama-Zafra JM, Rubio-Paramio MA. (2022). A New Method for Quantifying the Asymmetry of Biological Elements by Means of a Photogrammetric Technique Using a Parametric Computer-Aided Design System. Symmetry 14, 2296. (Q2 Multidisciplinary Sciences, IF (2022)=2.94) https://doi.org/10.3390/sym14112296