Results 191 to 200 of about 1,173,059 (291)

Comparing morphological integration patterns across groups using angular distances between PLS covariation axes

Methods in Ecology and Evolution, EarlyView.
Abstract Morphological integration describes coordinated covariation among traits arising from shared developmental, functional, or genetic interactions and plays an important role in shaping evolutionary trajectories. In geometric morphometrics, two‐block partial least squares (PLS) analysis is widely used to identify dominant axes of covariation ...
Mikel Arlegi
wiley   +1 more source

Exploring the Relationship Between Mandibular Morphology, Dental Eruption, and Chronological Age in Modern Human Juveniles Through Geometric Morphometrics. [PDF]

Am J Biol Anthropol
Chakraborty T, Arnaud J, Buzi C.
europepmc   +1 more source

Lithic analysis in African archaeology: Advances and key themes

Archaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski, Amanuel Beyin, Justin Pargeter   +2 more
wiley   +1 more source

Geometric Morphometrics of Astragalus and Shape Variation Analysis in Capra, Ovis, and Bovidae. [PDF]

Vet Med Sci
Üstündağ Y, Gürbüz İ, Demiraslan Y, Özgel Ö.   +3 more
europepmc   +1 more source

Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro

Archaeometry, EarlyView.
ABSTRACT This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production.
Antonio Pérez‐Balarezo, Luis Jaime Castillo, Jalh Dulanto   +2 more
wiley   +1 more source

Geometric morphometrics approach for classifying children's nutritional status on out of sample data. [PDF]

Sci Rep
Medialdea L, Arribas-Gil A, Pérez-Romero Á, Gómez A.   +3 more
europepmc   +1 more source

Crushing and Cutting: Shape Variation and Morphological Integration Between the Claws of Two Swimming Crab Species (Brachyura: Portunidae)

Acta Zoologica, EarlyView.
ABSTRACT This study investigated shape variations and morphological integration between the components of crusher and cutter claws in two species of swimming crabs, Callinectes danae and Callinectes ornatus. The propodi and dactyli of the claws were analysed in males and females of both species, using geometric morphometric techniques to identify ...
Julia Tadiotto, Alexandre Ribeiro da Silva, Julia Fernandes Perroca, Rogerio Caetano Costa, Caio Santos Nogueira   +4 more
wiley   +1 more source

Accurate identification of medically important <i>Aedes</i> mosquitoes (Diptera: Culicidae) in Thailand through DNA barcoding, wing geometric morphometrics, and machine learning. [PDF]

Curr Res Parasitol Vector Borne Dis
Laojun S, Changbunjong T, Kaewthamasorn M, Charnwichai P, Kaewmee S, Wichit S, Hamel R, Chaiphongpachara T.   +7 more
europepmc   +1 more source

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

Acta Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota, Ana Carla Soares da Silva, Lucas Jhones de Santana Neves, Carlos Eduardo Rocha Duarte Alencar, Fabrício Lopes Carvalho   +4 more
wiley   +1 more source

Exploring shape diversity and sexual dimorphism in two populations of Nigma conducens through geometric morphometrics. [PDF]

BMC Zool
El-Masry SM, Ismail TG, Mustafa AN.
europepmc   +1 more source