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233 results for “color pattern”
Fig. 3 in Evidence of the color pattern variation in populations of Gymnotus pantanal (Gymnotiformes) from three streams in the upper Paraná River basin, Brazil
Fig. 3. Color pattern variation in Gymnotus pantanal from Pinheirinho and Jacutinga streams. (a) 209.8 mm TL (NUP 9311); (b) 181.0 mm TL (NUP 9311); (c) 150.0 mm TL (NUP 9312); (d) 125.0 mm TL (NUP 9312).
Fig. 4 in Evidence of the color pattern variation in populations of Gymnotus pantanal (Gymnotiformes) from three streams in the upper Paraná River basin, Brazil
Fig. 4. Principal Component Analysis (PCA) ordination (a) and average values (± standard error) of the axes scores 1 (b) and 2 (c) from PCA ordination of morphometric characters for Gymnotus pantanal atypical color pattern (G. 1) and Gymnotus pantanal sensu stricto (G. 2).
Data from: Fuzzy boundaries: Color and gene flow patterns among parapatric lineages of the Western shovel-nosed snake and taxonomic implication
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Divergence, gene flow and the origin of leapfrog geographic distributions: the history of color pattern variation in Phyllobates poison-dart frogs
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Data from: Variation in activity rates may explain sex-specific dorsal color patterns in Habronattus jumping spiders
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Quantitative dissection of color patterning in the foliar ornamental Coleus reveals underlying features driving aesthetic value
<p>readMe.txt (this file) /Coleus_scans.zip: This directory contains 3 sub-directories:</p> <p>1. raw_scans: Raw scans of coleus leaves. Data collection described below.</p> <p>2. binary_leaves: A zip file of individual binary leaves isolated from the raw scans. Data processing described below.</p> <p>3. colored_leaves: A zip file of individual colored leaves isolated from the raw scans using the binary leaf silhouettes. Data processing described below.</p> <p>Data collection</p> <p>Coleus leaf scans were collected from a starting population of 50,000 seedlings that were originally harvested from 133 open-pollinated mother plants in early January in Gainesville, FL. We organized the seedlings into families based on their maternal parents, grew the plants for five weeks and then selected ~2,000 individuals as potential new cultivars based on their foliar color patterning and branching architecture in mid-February. This data represents the youngest fully expanded leaf from each plant between 5-6 weeks of age. Leaves were imaged on Epson Perfection V550 Scanners with Kodak KOCSGS color separation guides included for color calibration. Analysis App Color analysis can be performed using an open-access software program called ColourQuant (Li et al., 2019); available on github: github.com/maoli0923/ColourQuant).</p> <p>Explanation of isolated binary and colored leaf files</p> <p>To isolate individual leaves from the raw data scans - we adjusted the RGB color balance on each scan by a white balance method so that the white swatch in the Kodak KOCSGS color separation guide is pure white, to ensure that scanners were not biasing the color data. Next, we segmented the leaves from the background by converting the RGB matrix into hue-saturation-value (HSV) format. Since most background pixels become grey in HSV, this was used to set a threshold that separates grey values from true leaf values. We then used the binary leaf silhouettes to extract the individual colored leaves by setting the background to pure white, and the foreground to pure black. We manually adjusted the thresholding for leaves that could not be automatically extracted due to shadows in the scan. The binary and colored leaf folder contain outliers, including leaves that were overlapping on the scanner, very small, or broken. These can be manually removed before analysis. </p> <p>File ID Key</p> <p>Files are named with the following code: Year_Family_Scan#. Files containing selected leaves for cultivar development are prepended with an “S” and files containing maternal leaf scans are prepended with an “M.”</p> <p>For questions regarding released dataset contact: Margaret Frank mhf47@cornell.edu</p> <p><br> Li, M., Frank, M.H., and Migicovsky, Z.. 2019a. ColourQuant: A high throughput technique to extract and quantify colour phenotypes from plant images. arXiv 190301652. http://arxiv.org/abs/1903.01652</p>
Data from: Diversity and preserved shell coloration patterns of Miocene Conidae (Neogastropoda) from an exposure of the Gatun Formation, Colon Province, Panama
Extant members of the neogastropod family Conidae (cone snails) are renowned for their often dazzling shell coloration patterns and venomous feeding habits. Many cone snail species have also been described from the fossil record, but to date have been little used to understand the evolutionary history of extant clades. The cone snail fauna of the Miocene Gatun Formation of Colón Province, Panama is especially important for understanding the temporal and biogeographic history of tropical American Conidae. Intensive, focused collecting from an exposure of the lower Gatun Formation (deposited ca. 11-10 Ma) resulted in the discovery of nearly 900 specimens of Conidae. Remarkably, many of these well-preserved specimens exhibit revealed coloration patterns when exposed to ultraviolet light. The fluorescing coloration patterns were used in conjunction with other features of shell morphology to differentiate species and, in most cases, evaluate their potential relationships to members of the extant tropical American fauna. Nine species are fully described from this locality, one of which is recognized as new: Conus (Stephanoconus) woodringi n. sp. At least one, and perhaps more, Conidae species are also present at the study locality. The diversity of this Conidae fauna is considered moderate relative to other recently analyzed tropical American fossil assemblages. The phylogenetic diversity of the assemblage, however, is noteworthy: six of the ten species can be confidently assigned to six different clades of extant Conidae, providing potentially useful calibration points for future phylogenetic studies.
Evolutionary dynamics of structural variation at a key locus for color pattern diversification in cichlid fishes
<p>Color patterns in African cichlid fishes vary spectacularly. Although phylogenetic analysis showed already 30 years ago that many color patterns evolved repeatedly in these adaptive radiations, only recently have we begun to understand the genomic basis of color variation. Horizontal stripe patterns evolved and were lost several times independently across the adaptive radiations of Lake Victoria, Malawi, and Tanganyika and regulatory evolution of agouti-related peptide 2 (agrp2/asip2b) has been linked to this phenotypically labile trait. Here, we asked whether the agrp2 locus exhibits particular characteristics that facilitate divergence in color patterns. Based on comparative genomic analyses, we discovered several recent duplications, insertions, and deletions. Interestingly, one of these events resulted in a tandem duplication of the last exon of agrp2. The duplication likely precedes the East African radiations that started 8–12 Ma, is not fixed within any of the radiations, and is found to vary even within some species. Moreover, we also observed variation in copy number (two to five copies) and secondary loss of the duplication, illustrating a surprising dynamic at this locus that possibly promoted functional divergence of agrp2. Our work suggests that such instances of exon duplications are a neglected mechanism potentially involved in the repeated evolution and diversification that deserves more attention.</p>
Fig. 2 in Evidence of the color pattern variation in populations of Gymnotus pantanal (Gymnotiformes) from three streams in the upper Paraná River basin, Brazil
Fig. 2. Gymnotus pantanal, holotype, 196.0 mm TL, MZUSP 67874.
Data from: Diversity and preserved shell coloration patterns of Miocene Conidae (Neogastropoda) from an exposure of the Gatun Formation, Colon Province, Panama
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Data from: Every hue has its fan club: Diverse patterns of color-dependent flower visitation across Lepidoptera
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Climate underpins continent-wide patterns of carotenoid-based feather color consistent with Gloger’s observations
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Data from: The evolution of darter color and pattern: Small, rocky streams and riffles enhance the diversification of bright and conspicuous fishes
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Evolutionary dynamics of structural variation at a key locus for color pattern diversification in cichlid fishes
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The ivory lncRNA regulates seasonal color patterns in buckeye butterflies
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Patterns of change in floral color and odor of Lonicera calcarata are in relation to pollinator behavior
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Data from: Citizen science and color pattern analysis indicate unreported Batesian mimicry between Neotropical snakes
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FIGURE 32 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 32. Highly contrasting color patterns of structures (arrows) in the family Parastacidae similar to contrasting color patterns seen the family Cambaridae. Represented are two species from different genera within the family Parastacidae, Euastacus claytoni and Cherax snowden. Photos by Chris Lukhaup.
FIGURE 30. Partial cladogram modified from Data Set 3 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 30. Partial cladogram modified from Data Set 3 from Stern et al. 2017 showing Clades 4 & 5, with photos for comparison of color patterns between Cambarus aff. dubius and Cambarus gentryi.
FIGURE 26. Partial cladogram modified from Data Set 3 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 26. Partial cladogram modified from Data Set 3 from Stern et al. (2017); showing two subclades A & B within the clade of the former subgenus Pennides in the genus Procambarus.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.