Results 31 to 40 of about 1,173,059 (291)

An assessment of new character in hoverfly species delimitation using linear and geometric morphometrics – genus Merodon Meigen, 1803 (Diptera: Syrphidae) as a case study

European Journal of Taxonomy, 2023
Detection of morphologically indistinguishable cryptic species implies using an integrative taxonomic approach with a combination of molecular, contemporary morphological, ecological and other relevant analyses.
Jelena Ačanski, Tamara Tot, Ana Grković, Marija Miličić, Snežana Radenković, Ante Vujić   +5 more
doaj   +1 more source

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

Animals, 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, Arcesio Salamanca-Carreño, René Alejandro Crosby-Granados, Jannet Bentez-Molano   +3 more
doaj   +1 more source

On the Misidentification of Species: Sampling Error in Primates and Other Mammals Using Geometric Morphometrics in More Than 4000 Individuals

Evolutionary biology, 2021
An accurate classification is the basis for research in biology. Morphometrics and morphospecies play an important role in modern taxonomy, with geometric morphometrics increasingly applied as a favourite analytical tool.
A. Cardini, S. Elton, K. Kovarovic, U. S. Viđarsdóttir, P. D. Polly   +4 more
semanticscholar   +1 more source

Biometry traits and geometric morphometrics in sea bass (Dicentrarchus labrax) from different farming systems

Italian Journal of Animal Science, 2010
The effect of the farming system on biometry traits and dressing out yield were inves- tigated in market-size European sea bass (Dicentrarchus labrax) cultured extensively or intensively in sea cages or land-based basins.
Emilio Tibaldi, Maria Messina, Ivana Balenovic, Francesca Tulli   +3 more
doaj   +1 more source

Geometric Morphometric Analysis of Genus Chaetocnema (Coleoptera: Chrysomelidae: Alticini) with Insights on Its Subgenera Classification and Morphological Diversity

Diversity, 2023
In taxonomy, qualitative methods are commonly used to analyze morphological characters, which can lead to dramatic changes in higher taxa. Geometric morphometrics (GM) has proven to be useful for discriminating species in various taxonomy groups. However,
Mengna Zhang, Yongying Ruan, Ming Bai, Xiaoqin Chen, Lixia Li, Xingke Yang, Ziye Meng, Yang Liu, Xinyan Du   +8 more
doaj   +1 more source

Morphology, geometric morphometrics, and taxonomy in relict deciduous oaks woods in northern Italy

Rendiconti Lincei SCIENZE FISICHE E NATURALI, 2021
The Euganean Hills are a well-known refugee site for thermophilous woody flora in northern Italy. Among the species recorded here, there is Quercus dalechampii.
E. Proietti, L. Filesi, P. Di Marzio, R. Di Pietro, R. Masin, A. Conte, P. Fortini   +6 more
semanticscholar   +1 more source

Geometric morphometric methods for identification of oyster species based on morphology [PDF]

Biodiversity Data Journal
Both genetic and environmental factors affect the morphology of oysters. Molecular identification is currently the primary means of species identification, but it is inconvenient and costly.
Qian Liu, Yuepeng Guo, Yanzhuo Yang, Junxia Mao, Xubo Wang, Haijiao Liu, Ying Tian, Zhenlin Hao   +7 more
doaj   +3 more sources

Geometric morphometric analysis of projectile points from the Southwest United States

Peer Community Journal, 2023
Traditional analyses of projectile points often use visual identification, the presence or absence of discrete characteristics, or linear measurements and angles to classify points into distinct types.
Bischoff, Robert J.
doaj   +1 more source

Studying avian encephalization with geometric morphometrics [PDF]

Journal of Anatomy, 2016
AbstractEncephalization is a core concept in comparative neurobiology, aiming to quantify the neurological capacity of organisms. For measuring encephalization, many studies have employed relative brain sizes corrected for expected allometric scaling to body size.
Jesús, Marugán-Lobón, Akinobu, Watanabe, Soichiro, Kawabe   +2 more
openaire   +2 more sources

Geometric morphometrics of endophytic oviposition traces of Odonata (Eocene, Argentina) [PDF]

Royal Society Open Science, 2020
The insertion of the Odonata ovipositor in the plant tissue generates a scar that surrounds the eggs (trace). In insects, individual egg traces are known to vary in size, but their variation in individual shape is mostly unknown.
Eugenia Romero-Lebrón, Raquel M. Gleiser, Julián F. Petrulevičius   +2 more
doaj   +1 more source