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Geometric morphometrics of rodent sperm head shape. [PDF]

open access: yesPLoS ONE, 2013
Mammalian spermatozoa, particularly those of rodent species, are extremely complex cells and differ greatly in form and dimensions. Thus, characterization of sperm size and, particularly, sperm shape represents a major challenge. No consensus exists on a
María Varea Sánchez   +2 more
doaj   +7 more sources

A Comparison of Traditional and Geometric Morphometric Techniques for the Study of Basicranial Morphology in Horses: A Case Study of the Araucanian Horse from Colombia [PDF]

open access: yesAnimals, 2020
Skull size and shape have been widely used to study domestic animal populations and breeds. Although several techniques have been proposed to quantify cranial form, few attempts have been made to compare the results obtained by different techniques ...
Pere Miquel Parés-Casanova   +3 more
doaj   +4 more sources

Determination of Sexual Dimorphism and Morphological Variation of Pool Barb, Puntius sophore (Cypriniformes, Cyprinidae), Using Landmark Based Geometric Morphometric Analysis

open access: diamondZoodiversity
Geometric morphometrics is an efficient way to quantify biological shape variation and its covariation with other biotic or abiotic factors. The geometric information of an object is measured in a non-linear shape space after removing size, orientation ...
S. Roy, S. Ray, S. Saikia
doaj   +2 more sources

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

open access: yesScientific 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   +2 more
doaj   +2 more sources

Functional data geometric morphometrics with machine learning for craniodental shape classification in shrews [PDF]

open access: yesScientific Reports
This work proposes a functional data analysis approach for morphometrics in classifying three shrew species (S. murinus, C. monticola, and C. malayana) from Peninsular Malaysia.
Aneesha Balachandran Pillay   +4 more
doaj   +2 more sources

Landmark-based geometric morphometric analysis of wing shape among certain species of Aedes mosquitoes in District Dehradun (Uttarakhand), India

open access: diamondJournal of Vector Borne Diseases, 2015
Background & objectives: Insect wing morphology has been used in many studies to describe variations among species and populations using traditional morphometrics, and more recently geometric morphometrics.
Ritwik Mondal   +2 more
doaj   +2 more sources

A Novel Approach to Study Cranial Shape in Children with Normal and Sagittal Synostosis: An Application of Geometric Morphometrics [PDF]

open access: yesNeurologia Medico-Chirurgica
To provide appropriate treatment, neurosurgeons and pediatricians must understand the chronological changes of the cranial morphology in normal children and the differences between normal and sagittal synostosis children. However, this issue has remained
Tadashi MIYAGAWA, Akira YAMAURA
doaj   +2 more sources

ZooMS confirms geometric morphometrics species identification of ancient sheep and goat [PDF]

open access: yesRoyal Society Open Science, 2023
Geometric morphometrics can effectively distinguish isolated third lower molars of present-day sheep and goat, but its applicability to archaeological specimens has yet to be established.
Marine Jeanjean   +11 more
doaj   +2 more sources

Integrative species delimitation in the common ophiuroid Ophiothrix angulata (Echinodermata: Ophiuroidea): insights from COI, ITS2, arm coloration, and geometric morphometrics [PDF]

open access: yesPeerJ, 2023
Ophiothrix angulata (Say, 1825) is one of the most common and well-known ophiuroids in the Western Atlantic, with a wide geographic and bathymetric range. The taxonomy of this species has been controversial for a century because of its high morphological
Yoalli Quetzalli Hernández-Díaz   +5 more
doaj   +2 more sources

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