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213 results for “Geometric morphometric analysis”
Figure 3 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 3 Superimposed forewing shapes of male and females of P. machinosus, P. securicola, and P. repens.
Figure 1 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 1 Position of landmarks (circles) in the right forewing of Psyllopsis machinosus. Position of landmarks follows that of Lashkari et al. (2013).
Supplementary material 1 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
: Data type: morphometric data
Figure 7 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 7 Differences in elytron shape among each branch and ancestor, on the basis of principal component analysis. Empty dots indicate the number of the node on the phylogenetic tree; solid dots indicate the average shape of the extant subfamily/tribe of each branch.
Figure 6 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 6 Differences in pronotum shape among each branch and ancestor, on the basis of principal component analysis. Empty dots indicate the number of the node on the phylogenetic tree; solid dots indicate the average shape of the extant subfamily/tribe of each branch.
Figure 5 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 5 Reconstruction of ancestral groundplans of the elytron in Lucanidae and the outgroups. The splines indicate the deformation of the shapes relative to the reference configuration. The phylogenetic tree was summarized and reconstructed from earlier molecular results (Kim and Farrell 2015).
Figure 3 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 3 Differences in elytron shape between outgroups and Lucanidae, on the basis of principal component analysis at the species level. The four circles are 90%-equal frequency ellipses of Lucanidae subfamilies.
Figure 4 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 4 Reconstruction of ancestral groundplans of the pronotum in Lucanidae and the outgroups. The splines indicate deformation of the shapes relative to the reference configuration. The phylogenetic tree was summarized and reconstructed from earlier molecular results (Kim and Farrell 2015).
Figure 2 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 2 Differences in pronotum shape between outgroups and Lucanidae, on the basis of principal component analysis at the species level. The four circles are 90%-equal frequency ellipses of Lucanidae subfamilies.
Figure 1 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164
Figure 1 Description of the curves used in geometric morphometric analysis. The positions selected for the pronotum and elytron curves are represented by Prosopocoilus sp. in dorsal view. The curves were resampled in 25 or 50 semi-landmarks (SLM).
Fig. 3 in Differentiation of Trichuris species eggs from non-human primates by geometric morphometric analysis
Fig. 3. Factor map corresponding to Trichuris sp. eggs derived from different host primate species: macaque (M. sylvanus), colobus (C. g. kikuyensis), grivets (C. aethiops) and the Brazza's monkey (C. neglectus) from zoos in Spain. Samples are projected onto the first (PC1, 61%) and second (PC2, 18%) principal components. Each group is represented by its perimeter. Circles represent the centroid in each community.
Data from: Studying developmental variation with Geometric Morphometric Image Analysis (GMIA)
The ways in which embryo development can vary across individuals of a population determine how genetic variation translates into adult phenotypic variation. The study of developmental variation has been hampered by the lack of quantitative methods for the joint analysis of embryo shape and the spatial distribution of cellular activity within the developing embryo geometry. By drawing from the strength of geometric morphometrics and pixel/voxel-based image analysis, we present a new approach for the biometric analysis of two-dimensional and three-dimensional embryonic images. Well-differentiated structures are described in terms of their shape, whereas structures with diffuse boundaries, such as emerging cell condensations or molecular gradients, are described as spatial patterns of intensities. We applied this approach to microscopic images of the tail fins of larval and juvenile rainbow trout. Inter-individual variation of shape and cell density was found highly spatially structured across the tail fin and temporally dynamic throughout the investigated period.
Figure 5 in Taxonomic revision of the Hydroporus bodemeyeri species complex (Coleoptera: Dytiscidae) with a geometric morphometric analysis of body shape within the group
Figure 5. Cluster analysis of average body shapes of examined taxa (Euclidean distance, UPGMA).
Figure 6 in Taxonomic revision of the Hydroporus bodemeyeri species complex (Coleoptera: Dytiscidae) with a geometric morphometric analysis of body shape within the group
Figure 6. Distribution of the species of the H. bodemeyeri species complex.
Figure 3 in Evolution of the zygomasseteric construction in Rodentia, as revealed by a geometric morphometric analysis of the mandible of Graphiurus (Rodentia, Gliridae)
Figure 3. Shape differentiation of the mandible on the first two axes of the PCA on mean species centroid coordinates. Outlines are reconstructed on the first two principal components; light grey outline represents the maximum values of the axes, dark grey outline corresponds to extreme reconstruction. Solid symbols indicate families with hystricomorphous skull: squares, Anomaluridae; rhombi, Ctenodactylidae; circles, Pedetidae; triangles, Dipodidae; stars, Graphiurinae. Open symbols indicate myomorph families: stars, Gliridae (Glirinae/Leithiinae); rhombi, Nesomyidae; circles, Muridae; triangles, Cricetidae. Upper left, mean projection for each family, with the minimum spanning tree.
Figure 5 in Evolution of the zygomasseteric construction in Rodentia, as revealed by a geometric morphometric analysis of the mandible of Graphiurus (Rodentia, Gliridae)
Figure 5. Mapping of the four infraorbital structures on a phylogenetic tree derived from Huchon et al. (2002) and Adkins et al. (2003). Boxes: dashed, protrogomorphous condition; white, sciuromorphous condition; light grey, hystricomorphous condition; dark grey, myomorphous condition. Abbreviations: iof, infraorbital foramen; zp, zygomatic plate.
Figure 2 from: Guan K, Su J, Wang J, Yang Y (2015) Significance of hind wing morphology in distinguishing genera and species of cantharid beetles with a geometric morphometric analysis. ZooKeys 502: 11-25. https://doi.org/10.3897/zookeys.502.9191
Figure 2 - Shape variables of the hind wings in the genera of Lycocerus, Prothemus and Themus. A principal component analysis (PCA) of hind wing configuration. Plot of PC1 (74.39% of total variation) and PC2 (8.52% variation) showing 90% confidence ellipses of population means B canonical variate analysis (CVA) of same matrix, also showing 90% confidence ellipses of population means. The averaged shape of each genus is depicted as deformations using thin plate splines.
Figure 5 from: Guan K, Su J, Wang J, Yang Y (2015) Significance of hind wing morphology in distinguishing genera and species of cantharid beetles with a geometric morphometric analysis. ZooKeys 502: 11-25. https://doi.org/10.3897/zookeys.502.9191
Figure 5 - Shape variables of the hind wings in the Themus species. A principal component analysis (PCA) of hind wing configuration. Plot of PC1 (32.87% of total variation) and PC2 (16.48% variation) showing 90% confidence ellipses of population means B canonical variate analysis (CVA) of same matrix, also showing 90% confidence ellipses of population means. The averaged shape of each species is depicted as deformations using thin plate splines.
Figure 4 from: Guan K, Su J, Wang J, Yang Y (2015) Significance of hind wing morphology in distinguishing genera and species of cantharid beetles with a geometric morphometric analysis. ZooKeys 502: 11-25. https://doi.org/10.3897/zookeys.502.9191
Figure 4 - Shape variables of the hind wings in the Prothemus species. A principal component analysis (PCA) of hind wing configuration. Plot of PC1 (38.40% of total variation) and PC2 (15.88% variation) showing 90% confidence ellipses of population means B canonical variate analysis (CVA) of same matrix, also showing 90% confidence ellipses of population means. The averaged shape of each species is depicted as deformations using thin plate splines.
Figure 3 from: Guan K, Su J, Wang J, Yang Y (2015) Significance of hind wing morphology in distinguishing genera and species of cantharid beetles with a geometric morphometric analysis. ZooKeys 502: 11-25. https://doi.org/10.3897/zookeys.502.9191
Figure 3 - Shape variables of the hind wings in the Lycocerus species. A principal component analysis (PCA) of hind wing configuration. Plot of PC1 (49.02% of total variation) and PC2 (14.92% variation) showing 90% confidence ellipses of population means B canonical variate analysis (CVA) of same matrix, also showing 90% confidence ellipses of population means. The averaged shape of each species is depicted as deformations using thin plate splines.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.