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139 results for “color variation”
Fig. 11 in Congruent Patterns of Genetic and Morphological Variation in the Parthenogenetic Lizard Aspidoscelis tesselata (Squamata: Teiidae) and the Origins of Color Pattern Classes and Genotypic Clones in Eastern New Mexico
Fig. 11. Pattern of multivariate morphological variation among Aspidoscelis tesselata of pattern classes C (N = 44), E (N = 32), and New Mexico D (N = 5) from the vicinity of Sumner Lake State Park, De Baca County, New Mexico. Canonical variate scores were derived from a canonical variate analysis using meristic characters identified in table 10.
Fig. 2 in Congruent Patterns of Genetic and Morphological Variation in the Parthenogenetic Lizard Aspidoscelis tesselata (Squamata: Teiidae) and the Origins of Color Pattern Classes and Genotypic Clones in Eastern New Mexico
Fig. 2. Electrophoretic phenotypes of GPI, a dimeric enzyme, from erythrocyte hemolysates of six specimens of Aspidoscelis. Letters below gel identify allozymes based on alleles present (table 3), and the genotype of each lizard is listed on the right. Note the very slight difference in migration between the products of the ballele versus callele. Lanes for individual lizards are labeled beside their patterns on the gel as follows: TESC, A. tesselata of pattern class CE from Conchas Lake State Park, New Mexico; and TESE, A. tesselata of pattern class E from Sandoval County, New Mexico. Anode is to the right.
Fig. 1 in Congruent Patterns of Genetic and Morphological Variation in the Parthenogenetic Lizard Aspidoscelis tesselata (Squamata: Teiidae) and the Origins of Color Pattern Classes and Genotypic Clones in Eastern New Mexico
Fig. 1. Geographic relationships among four northern collecting localities of Aspidoscelis tesselata of color pattern classes C, New Mexico D, and E and convenience classes CE and EC. Color patterns found at the four sites are (1) Conchas Lake State Park: CE and New Mexico D; (2) Sumner Lake State Park: C, New Mexico D, and E; (3) Puerto de Luna: E; and (4) Arroyo del Macho: EC.
Fig. 7 in Congruent Patterns of Genetic and Morphological Variation in the Parthenogenetic Lizard Aspidoscelis tesselata (Squamata: Teiidae) and the Origins of Color Pattern Classes and Genotypic Clones in Eastern New Mexico
Fig. 7. Color pattern variation in Aspidoscelis tesselata of pattern class CE from the vicinity of Conchas Lake State Park, San Miguel County, New Mexico. Morphological subgroup 6CE: A (RU 0002, 93 mm SVL); B (RU 0029, 96 mm SVL); morphological subgroup 1CE: C (RU 0013, 95 mm SVL); D (RU 0030, 89 mm SVL); E (RU 0021, 95 mm SVL); morphological subgroup 8CE: F (RU 0027, 86 mm SVL).
Fig. 4 in Congruent Patterns of Genetic and Morphological Variation in the Parthenogenetic Lizard Aspidoscelis tesselata (Squamata: Teiidae) and the Origins of Color Pattern Classes and Genotypic Clones in Eastern New Mexico
Fig. 4. Electrophoretic phenotypes of MPI, a monomeric enzyme, from liver homogenates of 11 specimens of Aspidoscelis. Letters below gel identify allozymes based on alleles present (table 3), and the genotype of each lizard is listed on the right. Lanes for individual lizards are labeled beside their patterns on the gel (with genotype) as follows: NEOTESA, B, and C, different pattern classes of the triploid A. neotesselata from Colorado; TESC and D, A. tesselata of pattern classes CE and D from Conchas Lake State Park, New Mexico; TESE, A. tesselata of pattern class EC from Arroyo del Macho, New Mexico; TESF, A. dixoni from New Mexico; TESF × PUN, triploid hybrid of A. dixoni × A. tigris punctilinealis from New Mexico; and TESG and H, A. dixoni of two pattern classes from Texas. Anode is to the right.
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).
2 million histopathology stain vectors including Hematoxylin & Eosin color variations
<p>The database includes the stain vectors including color variations of over 2 million patches.</p> <p>The database is adopted in "Data-driven color augmentation for H&E stained images in computational pathology", (https://www.sciencedirect.com/science/article/pii/S2153353922007830) to check is the color variation of an augmentated sample is acceptable or not. During the training, the color variation of an augmented sample is compared with the variations included in the database. If N variations from the database are found within a radius R from the components of the augmented sample, the augmented sample is considered acceptable (in terms of color variations); otherwise, it is discarded.</p> <p>The database is stored in a .pickle file, including vectors with six elements: the RGB components of Hematoxylin and Eosin, for every patch. Double entries are removed from the database. Code to import and to extend database with new data is available here: https://github.com/ilmaro8/Data_Driven_Color_Augmentation</p> <p>Stain vectors are collected from six private and public sources, to ensure that color variations can cover the variability of H&E-stained tissues: TCGA, ExaMode colon dataset, Camelyon, Puerta del Mar, Clinic, CAD.</p>
"I'm something of an untrained, unofficial cultural anthropologist myself. Ihave a business interviewing people to capture their personal histories. I'm always interested how people fit into their world and how they affect their world. I'm a graphic designer who works in the same building as the printing presses that I recorded. Iwalk past the presses every day on my way to talk to the folks in the prepress department. I'm on friendly but not drinking terms with the pressmen. I'm a friend with the prepress manager. Three Heidelberg presses are installed side by side in an open warehouse-like room. The presses are about twenty feet long and about five feet high. With their series of four humps or mounds where each printing cylinder is located, the presses remind one of giant, gray, mechanical caterpillars. Each press has a cyan cylinder, a magenta cylinder, a yellow cylinder and a black cylinder – so the humps are brightly colored. The presses are well lit by banks of fluorescent lights hanging from the ceiling over each press. When you walk into the press room you hear the sound of rock music blaring from a boom box radio mixed with the general din of the presses. It is only when you walk up to a press like Idid for the recordings that you really start to hear the individual strains of clicking, clacking and mechanical, syncopated chattering. When I made my recordings I was intrigued by the subtle variations in the sounds produced by these machines that aren't apparent when you first walk through the door. The pressmen were kind enough to allow me to walk right up to the presses and poke my microphone quite close to the rotating press cylinders. Iuse a Danish Pro Audio microphone about the size of a pencil eraser. An extremely sensitive mic with the capacity for capturing loud sounds such as the presses up close. Rotating the mic to one side or the other focused on the unique sounds coming from one cylinder or the other." [Kevin/KMerrell]18 in Collecting Sounds. Online Sharing of Field Recordings as Cultural Practice
"I'm something of an untrained, unofficial cultural anthropologist myself. Ihave a business interviewing people to capture their personal histories. I'm always interested how people fit into their world and how they affect their world. I'm a graphic designer who works in the same building as the printing presses that I recorded. Iwalk past the presses every day on my way to talk to the folks in the prepress department. I'm on friendly but not drinking terms with the pressmen. I'm a friend with the prepress manager. Three Heidelberg presses are installed side by side in an open warehouse-like room. The presses are about twenty feet long and about five feet high. With their series of four humps or mounds where each printing cylinder is located, the presses remind one of giant, gray, mechanical caterpillars. Each press has a cyan cylinder, a magenta cylinder, a yellow cylinder and a black cylinder – so the humps are brightly colored. The presses are well lit by banks of fluorescent lights hanging from the ceiling over each press. When you walk into the press room you hear the sound of rock music blaring from a boom box radio mixed with the general din of the presses. It is only when you walk up to a press like Idid for the recordings that you really start to hear the individual strains of clicking, clacking and mechanical, syncopated chattering. When I made my recordings I was intrigued by the subtle variations in the sounds produced by these machines that aren't apparent when you first walk through the door. The pressmen were kind enough to allow me to walk right up to the presses and poke my microphone quite close to the rotating press cylinders. Iuse a Danish Pro Audio microphone about the size of a pencil eraser. An extremely sensitive mic with the capacity for capturing loud sounds such as the presses up close. Rotating the mic to one side or the other focused on the unique sounds coming from one cylinder or the other." [Kevin/KMerrell]18
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 accompanying Polyphenisms and polymorphisms: genetic variation in plasticity and color variation within and among bluefin killifish populations
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Identifying the proximal cue(s) for pupal color variation in the bordered patch butterfly, Chlosyne lacinia (Geyer 1837; Lepidoptera: Nymphalidae)
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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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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>
Data from: A ketocarotenoid-based color polymorphism in the Sira poison frog Ranitomeya sirensis indicates novel gene interactions underlying aposematic signal variation
<p>The accumulation of red ketocarotenoids is an important component of coloration in many organisms, but the underlying mechanisms are poorly understood. In some organisms, ketocarotenoids are sequestered from the diet and can accumulate when enzymes responsible for carotenoid breakdown are disrupted. In other organisms, ketocarotenoids are formed endogenously from dietary precursors via oxidation reactions carried out by carotenoid ketolase enzymes. Here, we study the genetic basis of carotenoid coloration in an amphibian. We demonstrate that a red/yellow polymorphism in the dendrobatid poison frog <em>Ranitomeya sirensis</em> is due to the presence/absence of ketocarotenoids. Using whole-transcriptome sequencing of skins and livers, we found that a transcript encoding a cytochrome P450 enzyme (CYP3A80) is expressed 3.4-fold higher in livers of red frogs versus yellow. As CYP3A enzymes are known carotenoid ketolases in other organisms, our results point to CYP3A80 as a strong candidate for a carotenoid ketolase in amphibians. Furthermore, in red frogs, the transcript encoding the carotenoid cleavage enzyme BCO2 is expressed at a low level or as a splice variant lacking key catalytic amino acids. This suggests that BCO2 function may be disrupted in red frogs, providing a mechanism whereby the accumulation of ketocarotenoids and their dietary precursors may be enhanced.</p>
Figures 1-2. Ohanlonella esperanzae Rifkind. 1 in A new state record for Ohanlonella Rifkind in Mexico with a note on color variation (Coleoptera: Cleridae: Clerinae)
Figures 1-2. Ohanlonella esperanzae Rifkind. 1) Veracruz morph. 2) Oaxaca morph.
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: A molecular mechanism for bright color variation in parrots
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Data from: Intraspecific variation in color and carotenoids across environmental extremes in an African Cichlid
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Data from: Ecosystem effects of intraspecific variation in a color polymorphic amphibian
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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.