Technical Note: Geometric morphometrics and sexual dimorphism of the greater sciatic notch in adults from two skeletal collections: The accuracy and reliability of sex classification

2013 ◽  
Vol 152 (4) ◽  
pp. 558-565 ◽  
Author(s):  
Jana Velemínská ◽  
Václav Krajíček ◽  
Ján Dupej ◽  
Jorge A. Goméz-Valdés ◽  
Petr Velemínský ◽  
...  
Keyword(s):  
Sexual Dimorphism ◽  
Geometric Morphometrics ◽  
Technical Note ◽  
Sciatic Notch ◽  
Skeletal Collections

scholarly journals New Geometric Morphometric Insights in Digital Taphonomy: Analyses into the Sexual Dimorphism of Felids through Their Tooth Pits

2021 ◽  
Vol 11 (17) ◽  
pp. 7848
Author(s):  
Darío Herranz-Rodrigo ◽  
Silvia J. Tardáguila-Giacomozzi ◽  
Lloyd A. Courtenay ◽  
Juan-José Rodríguez-Alba ◽  
Antonio Garrucho ◽  
...  
Keyword(s):  
Sexual Dimorphism ◽  
Geometric Morphometrics ◽  
Applied Statistics ◽  
Panthera Tigris ◽  
Panthera Pardus ◽  
Geometric Morphometric ◽  
Male And Female ◽  
New Horizons ◽  
Carnivore Species ◽  
Felid Species

Recent studies using geometric morphometrics for taphonomy have yielded interesting results, opening new horizons of research in both archaeological and paleontological sites. Here we present the analysis of tooth pits left by male and female individuals of two different carnivore species (Panthera tigris and Panthera pardus) in order to see if sexual dimorphism influences the morphology of tooth pit marks. In the process, 3D-scanning and applied statistics were used. Based on samples derived from two individuals of different sexes, the present results indicate sexual dimorphism in these felid species to not be a conditioning factor of tooth pit morphology.

A Geometric Morphometric Assessment of Hand Shape and Comparison to the 2D:4D Digit Ratio as a Marker of Sexual Dimorphism

2013 ◽  
Vol 16 (2) ◽  
pp. 590-600 ◽  
Author(s):  
Paul G. Sanfilippo ◽  
Alex W. Hewitt ◽  
Jenny A. Mountain ◽  
David A. Mackey
Keyword(s):  
Sexual Dimorphism ◽  
Geometric Morphometrics ◽  
Shape Analysis ◽  
Twin Studies ◽  
Analytical Techniques ◽  
Shape Variation ◽  
Geometric Morphometric ◽  
Hand Shape ◽  
Physical Traits ◽  
Biological Shape

Twin studies are extremely useful for investigating hypotheses of genetic influence on a range of behavioral and physical traits in humans. Studies of physical traits, however, are usually limited to size-related biological characteristics because it is inherently difficult to quantify the morphological counterpart – shape. In recent years, the development of geometry-preserving analytical techniques built upon multivariate statistical methodologies has produced a new discipline in biological shape analysis known as geometric morphometrics. In this study of hand shape analysis, we introduce the reader already familiar with the field of twin research to the potential utility of geometric morphometrics and demonstrate the cross-discipline applicability of methods. We also investigate and compare the efficacy of the 2D:4D ratio, a commonly used marker of sexual dimorphism, to the fully multivariate approach of shape analysis in discriminating between male and female sex. Studies of biological shape variation utilizing geometric morphometric techniques may be completed with software freely available on the Internet and time invested to master the small learning curve in concepts and theory.

Analyses of sexual dimorphism of contemporary Japanese using reconstructed three-dimensional CT images – Curvature of the best-fit circle of the greater sciatic notch

2009 ◽  
Vol 11 ◽  
pp. S260-S262 ◽  
Author(s):  
Hitoshi Biwasaka ◽  
Yasuhiro Aoki ◽  
Toyohisa Tanijiri ◽  
Kei Sato ◽  
Sachiko Fujita ◽  
...  
Keyword(s):  
Sexual Dimorphism ◽  
Three Dimensional ◽  
Ct Images ◽  
Sciatic Notch ◽  
Best Fit

scholarly journals Sexual dimorphism in multiple aspects of 3D facial symmetry and asymmetry defined by spatially dense geometric morphometrics

2012 ◽  
Vol 221 (2) ◽  
pp. 97-114 ◽  
Author(s):  
Peter Claes ◽  
Mark Walters ◽  
Mark D. Shriver ◽  
David Puts ◽  
Greg Gibson ◽  
...  
Keyword(s):  
Sexual Dimorphism ◽  
Geometric Morphometrics ◽  
Facial Symmetry

scholarly journals Molecular Identification and Geometric Morphometric Analysis of Haematobosca aberrans (Diptera: Muscidae)

Insects ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 451 ◽  
Author(s):  
Tanasak Changbunjong ◽  
Jiraporn Ruangsittichai ◽  
Gerard Duvallet ◽  
Adrian C. Pont
Keyword(s):  
Sexual Dimorphism ◽  
Geometric Morphometrics ◽  
Morphometric Analysis ◽  
Morphological Characters ◽  
Wing Shape ◽  
Coi Gene ◽  
Morphological Identification ◽  
Data Systems ◽  
Geometric Morphometric ◽  
Geometric Morphometric Analysis

The genus Haematobosca Bezzi, 1907 (Diptera: Muscidae) contains haematophagous flies of veterinary importance. A new fly species of this genus was recognised from northern Thailand based on morphological characters and described as Haematobosca aberrans Pont, Duvallet & Changbunjong, 2020. In the present study, the mitochondrial cytochrome c oxidase I (COI) gene was used to confirm the morphological identification of H. aberrans. In addition, landmark-based geometric morphometrics was used to determine sexual dimorphism. The molecular analysis was conducted with 10 COI sequences. The results showed that all sequences were 100% identical. The sequence was not highly similar to reference sequences from GenBank and did not match any identified species from Barcode of Life Data Systems (BOLD). Phylogenetic analysis clearly differentiated this species from other species within the subfamily Stomoxyinae. For geometric morphometric analysis, a total of 16 wing pictures were analysed using the landmark-based approach. The results showed significant differences in wing shape between males and females, with a cross-validated classification score of 100%. The allometric analysis showed that wing shape has no correlation with size. Therefore, the COI gene is effective in species identification of H. aberrans, and geometric morphometrics is also effective in determining sexual dimorphism.

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