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173 results for “quantitative morphology”
FIGURE 3. Quantitative burrow properties. A in Linking burrow morphology to the behaviors of predatory soil arthropods: Applications to continental ichnofossils
FIGURE 3. Quantitative burrow properties. A) Measurements were taken for number of surface openings (SO), burrow slope (S), maximum depth (D), total length (L), tunnel, shaft, and chamber width (w), height (h), and circumference (c), and branching angles (BA). B) Complexity includes the number of segments (s), chambers (h), and surface openings (e) within a single burrow system. C) Tortuosity of a single burrow segment is found by dividing the total length (u) by the straight-line distance (v) from end to end. Modified from Hembree (2019).
Dataset for "Finding order in chaos: Quantitative predictors of chaos terrain morphology on Europa"
<p>Dataset S1 contains two shapefiles containing the chaos borders (ChaosBordersShapefiles.zip) and each block mapped (AllBlocksShapefiles.zip), and a text file that contains the total area (km<sup>2</sup>) of each mapped chaos terrain and the area (km<sup>2</sup>) of every block we mapped within each chaos terrain in the manuscript "Finding order in chaos: Quantitative predictors of chaos terrain morphology on Europa".</p>
Linked collectors and determiners for: Taxonomic revision of the Malagasy Camponotus subgenus Mayria (Hymenoptera, Formicidae) using qualitative and quantitative morphology.
Natural history specimen data linked to collectors and determiners held within, "Taxonomic revision of the Malagasy Camponotus subgenus Mayria (Hymenoptera, Formicidae) using qualitative and quantitative morphology". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/3338d9d4-c5fa-4f77-89fb-901b1e028237">https://bionomia.net/dataset/3338d9d4-c5fa-4f77-89fb-901b1e028237</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/3338d9d4-c5fa-4f77-89fb-901b1e028237">https://gbif.org/dataset/3338d9d4-c5fa-4f77-89fb-901b1e028237</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology.
Natural history specimen data linked to collectors and determiners held within, "Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/0a267faa-8b7b-44e9-abf3-fb0902f6a0d7">https://bionomia.net/dataset/0a267faa-8b7b-44e9-abf3-fb0902f6a0d7</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/0a267faa-8b7b-44e9-abf3-fb0902f6a0d7">https://gbif.org/dataset/0a267faa-8b7b-44e9-abf3-fb0902f6a0d7</a>. Formatted as a Frictionless Data package.
Supplementary material for "Quantitative morphological analysis of skulls of pterosaurs and early birds highlight a functional shift during the Mesozoic" by Gauweiler J. et al.
<p>This data repository contains additional information and supplemental material for the publication "Quantitative morphological analysis of skulls of pterosaurs and early birds highlight a functional shift during the Mesozoic". For information on the authors, see the original publication.</p> <p>The folder "Prehistoric_Ornithodira_BMPs.zip" contains outline images in .bmp format of all skulls used for the analysis.</p> <p>The file "Groups.csv" contains the grouping variables for all data points.</p> <p>The file "PC_Scores.csv" contaisn the principal component scores of the SHAPE analysis for all individuals used in the analysis.</p> <p>The file "Pterosaur_Avian_Script.R" contaisn the R code used for statistical analysis and plotting of the data.</p>
Data from: Comparisons of quantitative approaches for assessing microglial morphology reveal inconsistencies, ecological fallacy, and a need for standardization
<p>Microglia morphology is used as a measure of neuroinflammation and pathology, but different methods to quantify microglia morphology are frequently employed across neuroscience. For reliable inference, it is critical that microglial morphology is accurately quantified and that results can be easily interpreted and compared across studies. We applied five of the most commonly used ImageJ-based methods for quantifying the microglial morphological response to a stimulus to identical photomicrographs and isolated microglial cells, which allowed for direct comparisons of the specificity and reliability of each method.</p>
Quantitative variables related to color, territory, behavior, and morphology for male lesser prairie-chickens used in discrete choice models in mate choice study
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Data from: Comparisons of quantitative approaches for assessing microglial morphology reveal inconsistencies, ecological fallacy, and a need for standardization
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Data from: Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
The Camponotus grandidieri species group and Camponotus niveosetosus species group of the Malagasy region are revised. Species delimitation was inferred from the evidence of both qualitative morphological analysis and multivariate morphometry. The multivariate method combined the Nest Centroid (NC)-clustering method and Partitioning Algorithm based on Recursive Thresholding (PART) function to generate hypotheses about species boundaries (clusters) based on 19 continuous morphological traits of minor workers. The proposed species hypotheses were tested by cumulative cross-validated Linear Discriminant Analysis (LOOCV-LDA) and Principal Component Analysis in a shape space (shape PCA). Morphometric ratios for the subsets of minor and major workers were used in species descriptions and redefinitions. Here, eight species are recognized, of which three are newly described and five are redescribed. Four species belong to the Camponotus grandidieri species group: auropubens Forel, efitra n. sp., grandidieri Forel, and maintikibo n. sp.; and four species belong to the Camponotus niveosetosus species group: descarpentriesi Santschi, madagascarensis Forel stat. rev., mita n. sp., and voeltzkowii Forel. Camponotus auropubens aldabrensis Forel and C. olivieri freyeri Santschi are synonymized under C. auropubens. Camponotus grandidieri atrabilis Santschi and C. grandidieri comorensis Santschi are synonymized under C. grandidieri. Illustrated species identification keys for both minor and major castes, taxonomic discussions, images, and distribution maps for each species superimposed on the ecoregions of Madagascar are also provided.
Data from: The quantitative genetics of physiological and morphological traits in an invasive terrestrial snail: additive versus non-additive genetic variation
1. The distribution of additive versus non-additive genetic variation in natural populations represents a central topic of research in evolutionary/organismal biology. For evolutionary physiologists, functional or whole-animal performance traits ("physiological traits") are frequently studied assuming they are heritable and variable in populations. 2. Physiological traits of evolutionary relevance are those functional capacities measured at the whole-organism level, with a potential impact on fitness. They can be classified as capacities (or performances) or costs, the former being directly correlated with fitness, and the latter being inversely correlated with fitness (usually assumed as constraints). 3. In spite of their obvious adaptive significance, the additive genetic variation of physiological traits, and its relative contribution to phenotypic variance (or narrow-sense heritability) in comparison to maternal, dominance or epistatic variance, is known only for a few groups such as insects and mammals. 4. In this study, we assessed the additive and maternal/non-additive genetic variation in a suite of physiological and morphological traits in populations of the land snail Cornu aspersum. 5.Except for dehydration rate (h2= 0.32 ± 0.15), egg mass (h2= 0.82 ± 0.30) and hatchling mass (h2= 1.01 ± 0.31) (population = fixed effect), we found very low additive genetic variation. Large non-additive/maternal effects were found in all traits. Cage effects did not change the results, indicating low contribution of common environmental variance to our results. No differences were found between the phenotypic or non-additive genetic variance/covariance matrices. 6. Even though we compared populations across 1300 km in a common garden setup, our results suggest an absence of physiological as well as morphological differentiation in these populations. 7. These results contrast with previous analyses in the original distributional range of this species, which found high additive genetic variation in morphological traits. These are intriguing results demanding further quantitative genetic studies in the original distributional range of this species as well as the history of colonization of this invasive species.
FIGURES 19–26 in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURES 19–26. Distribution maps of the Camponotus grandidieri and niveosetosus species groups in the Malagasy region. Fig. 19: C. auropubens; Fig. 20: C. efitra; Fig. 21: C. maintikibo; Fig. 22: C. grandidieri; Fig. 23: C. descarpentriesi, Fig. 24: C. madagascarensis, Fig. 25: C. mita, Fig. 26: C. voeltzkowii.
FIGURE 18. Camponotus voeltzkowii minor worker CASENT0121619. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 18. Camponotus voeltzkowii minor worker CASENT0121619. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 17. Camponotus mita minor worker CASENT0498906. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 17. Camponotus mita minor worker CASENT0498906. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 15. Camponotus descarpentriesi minor worker CASENT0763876. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 15. Camponotus descarpentriesi minor worker CASENT0763876. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 16. Camponotus madagascarensis minor worker CASENT0125551. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 16. Camponotus madagascarensis minor worker CASENT0125551. A: lateral view; B: head in full-face view. C: dorsal view.
FIGURE 14. Camponotus maintikibo minor worker CASENT0763877. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 14. Camponotus maintikibo minor worker CASENT0763877. A: lateral view; B: head in full-face view; C: dorsal view.
FIGURE 13. Camponotus grandidieri minor worker CASENT0066758. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 13. Camponotus grandidieri minor worker CASENT0066758. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 12. Camponotus efitra minor worker CASENT0453926. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 12. Camponotus efitra minor worker CASENT0453926. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 11. Camponotus auropubens minor worker CASENT0133774. A in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 11. Camponotus auropubens minor worker CASENT0133774. A: lateral view. B: head in full-face view. C: dorsal view.
FIGURE 10 in Taxonomic revision of the Malagasy Camponotus grandidieri and niveosetosus species groups (Hymenoptera, Formicidae) using qualitative and quantitative morphology
FIGURE 10. Head and mesosoma in lateral view. A: C. auropubens (CASENT0133774). B: C. grandidieri (CASENT0060136).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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