Results 1 to 10 of about 1,915,047 (283)

Exploring desert-adapted beetles with 3D geometric morphometrics [PDF]

Scientific Reports
Darkling beetles (Tenebrionidae) are a diverse and ecologically significant group, particularly in arid environments, yet their taxonomy remains problematic due to scarcity of phylogenetic contributions and robust morphological investigations. This study
Tomasz Szara, Marcin Jan Kamiński, Ozan Gündemir   +2 more
doaj   +6 more sources

Lujiatun Psittacosaurids: understanding individual and taphonomic variation using 3D geometric morphometrics. [PDF]

PLoS ONE, 2013
Psittacosaurus is one of the most abundant and speciose genera in the Dinosauria, with fifteen named species. The genus is geographically and temporally widespread with large sample sizes of several of the nominal species allowing detailed analysis of ...
Brandon P Hedrick, Peter Dodson
doaj   +6 more sources

Sex Estimation Based on the Cranial Base of Three-Dimensional Skull Models from the Bosnia and Herzegovina Population Using Geometric Morphometrics [PDF]

Journal of Imaging
Sex estimation is a fundamental component of biological profiling in forensic anthropology, particularly when skeletal remains are incomplete or fragmented. This study aimed to evaluate sex estimation of the cranial base using geometric morphometrics and
Zurifa Ajanović, Saleha Redžepi, Uzeir Ajanović, Naida Spahović, Amina Zorlak-Čavčić, Emina Dervišević, Admir Terzić, Mirza Pojskić   +7 more
doaj   +2 more sources

Comparative Fluctuating Asymmetry and Directional Asymmetry in Four Cattle Skulls [PDF]

Veterinary Medicine and Science
This study investigates fluctuating asymmetry (FA) and directional asymmetry (DA) in the skulls of four cattle breeds: Eastern Anatolian Red, Southern Anatolian Red, Holstein and Simmental by using geometric morphometrics methods.
Nicoleta Manuta, Vezir Januzi, Ermiş Ozkan, Burak Ünal, Buket Çakar, Fatma İşbilir, Oleg P. Melnyk, Barış Can Güzel   +7 more
doaj   +2 more sources

Modelling of human torso shape variation inferred by geometric morphometrics

PLoS ONE, 2022
Traditional body measurement techniques are commonly used to assess physical health; however, these approaches do not fully represent the complex shape of the human body.
Michael Thelwell, Alice Bullas, Andreas Kühnapfel, John Hart, Peter Ahnert, Jon Wheat, Markus Loeffler, Markus Scholz, Simon Choppin   +8 more
doaj   +2 more sources

The Application of 3D Landmark-Based Geometric Morphometrics towards Refinement of the Piglet Grimace Scale

Animals, 2022
Proper methods of assessment to objectively identify pain are essential for welfare improvements of piglets undergoing surgical castration on commercial farms.
Maria E. Lou, Samantha T. Porter, Jason S. Massey, Beth Ventura, John Deen, Yuzhi Li   +5 more
doaj   +1 more source

Evolution of the bovid cranium: morphological diversification under allometric constraint

Communications Biology, 2022
Bibi and Tyler analyse the morphometric variation in the skulls of 96 species across Bovidae, using 3D geometric morphometrics and ecological variables.
Faysal Bibi, Joshua Tyler
doaj   +1 more source

Back to life: Techniques for developing high-quality 3D reconstructions of plants and animals from digitized specimens.

PLoS ONE, 2023
Expanded use of 3D imaging in organismal biology and paleontology has substantially enhanced the ability to visualize and analyze specimens. These techniques have improved our understanding of the anatomy of many taxa, and the integration of downstream ...
Elizabeth G Clark, Kelsey M Jenkins, Craig R Brodersen   +2 more
doaj   +2 more sources

Geometric morphometrics and machine learning from three-dimensional facial scans for difficult mask ventilation prediction

Frontiers in Medicine, 2023
BackgroundUnanticipated difficult mask ventilation (DMV) is a potentially life-threatening event in anesthesia. Nevertheless, predicting DMV currently remains a challenge.
Bei Pei, Chenyu Jin, Shuang Cao, Ningning Ji, Ming Xia, Hong Jiang   +5 more
doaj   +1 more source

Sexual Dimorphism in the Fibular Extremities of Italians and South Africans of Identified Modern Human Skeletal Collections: A Geometric Morphometric Approach

Biology, 2022
Fibular metric variations have revealed their potential in distinguishing between males and females; however the fibula remains scarcely analyzed in studies of sexual dimorphism.
Annalisa Pietrobelli, Rita Sorrentino, Stefano Durante, Damiano Marchi, Stefano Benazzi, Maria Giovanna Belcastro   +5 more
doaj   +1 more source