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100 results for “color change”
Data from: Thyroid hormone tinkering elicits integrated phenotypic changes potentially explaining rapid adaptation of color vision in cichlid fish
Vision is critical for most vertebrates, including fish. One challenge that aquatic habitats pose is the high variability in spectral properties depending on depth, turbidity and composition of the water body. By altering opsin gene expression and chromophore usage, cichlid fish modulate visual sensitivities to maximize sensory input from the available light in their respective habitat. Thyroid hormone (TH) has been proposed to play a role in governing adaptive diversification in visual sensitivity in Nicaraguan Midas cichlids, which evolved in less than ~3,100 generations. As suggested by indirect measurements of TH levels (i.e., expression of deiodinases), populations adapted to short wavelength light in clear lakes have lower TH levels than ones inhabiting turbid lakes enriched in long-wavelength light. We experimentally manipulated TH levels by exposing two-week-old Midas cichlids to exogenous TH or a TH-inhibitor and measured opsin gene expression and chromophore usage (via cyp27c1 expression). Whereas exogenous TH induces long-wavelength sensitivity by changing opsin gene expression and chromophore usage in a concerted manner, TH-inhibited fish exhibit a visual phenotype with sensitivities shifted to shorter-wavelengths. Tinkering with TH levels in eyes results in concerted phenotypic changes that can provide a rapid mechanism of adaptation to novel light environments. --
House finch leg color changes with infection
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Data from: Do green lynx spiders (Peucetia viridans) change color in response to their backgrounds?
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Data from: Phenotypic flexibility in background-mediated color change in sticklebacks
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Data from: Winter coat color polymorphisms identify global hotspots for evolutionary rescue from climate change
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Data from: Thyroid hormone tinkering elicits integrated phenotypic changes potentially explaining rapid adaptation of color vision in cichlid fish
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Data from: Camouflage, conspicuousness, and inducible color change in a polymorphic, sexually dichromatic frog
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Dynamic color change in the grouper Variola louti during interspecific interactions and swimming
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Data from: Why have multiple plastic responses? Interactions between color change and heat avoidance behavior in Battus philenor larvae
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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: Transcriptomic regulation of seasonal coat color change in hares
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Data from: Regulatory changes in pterin and carotenoid genes underlie balanced color polymorphisms in the wall lizard
Reptiles use pterin and carotenoid pigments to produce yellow, orange, and red colors. These conspicuous colors serve a diversity of signaling functions, but their molecular basis remains unresolved. Here, we show that the genomes of sympatric color morphs of the European common wall lizard (Podarcis muralis), which differ in orange and yellow pigmentation and in their ecology and behavior, are virtually undifferentiated. Genetic differences are restricted to two small regulatory regions, near genes associated with pterin (SPR) and carotenoid metabolism (BCO2), demonstrating that a core gene in the housekeeping pathway of pterin biosynthesis has been co-opted for bright coloration in reptiles and indicating that these loci exert pleiotropic effects on other aspects of physiology. Pigmentation differences are explained by extremely divergent alleles and haplotype analysis revealed abundant trans-specific allele sharing with other lacertids exhibiting color polymorphisms. The evolution of these conspicuous color ornaments is the result of ancient genetic variation and cross-species hybridization.
FIGURE 11. Coenobita rugosus. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 11. Coenobita rugosus. A (whole animal, dorsal view), B (whole animal, right lateral view), C (animal showing ocular acicles, dorsal view), N1 (sample no. in Table 2, 0.92 mm SL, 0 months old); D (animal showing ocular acicles, right lateral view), N6 (1.04 mm SL, 1 month old); E (whole animal, dorsal view), F (animal showing ocular acicles and shield, left lateral view), N8 (1.34 mm SL, 3 months old).
FIGURE 10. Coenobita purpureus. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 10. Coenobita purpureus. A (animal showing shield, posterior carapace, and appendages, dorsal view), B (animal showing shield, posterior carapace, and appendages, left lateral view), M10 (sample no. in Table 2, 1.82 mm SL, 3 months old); C (animal showing shield, posterior carapace, and left appendages, dorsal view), M20 (2.29 mm SL, 6 months old); D (animal showing palm of the left cheliped, dorsal view), E (animal showing propodus and dactylus of the left third pereiopod, dorsal view), M37 (4.63 mm SL, 12 months old).
FIGURE 12. Coenobita rugosus. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 12. Coenobita rugosus. A (animal showing ocular acicles, shield, and some appendages, dorsal view), B (animal showing ocular peduncles, ocular acicles, and shield, right lateral view), C (animal showing ocular peduncles, ventral view), N10 (sample no. in Table 2, 1.78 mm SL, 4 months old); D (whole animal, dorsal view), N15 (1.57 mm SL, 5 months old); E (whole animal dorsal view), F (animal showing ocular peduncles, shield, and some appendages, left lateral view), N16 (1.91 mm SL, 6 months old); G (animal showing ocular peduncles, shield, and some appendages, left lateral view), N17 (1.70 mm SL, 6 months old); H (animal showing ocular peduncles, shield, and some appendages, left lateral view), N22 (2.07 mm SL, 8 months old); I (animal showing ocular peduncles, shield, and some appendages, left lateral view), N24 (1.81 mm SL, 8 months old).
FIGURE 7. Coenobita cavipes. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 7. Coenobita cavipes. A (whole animal, dorsal view), B (animal showing shield, posterior carapace, and some appendages, right lateral view), C (animal showing ocular peduncles, ventral view), O2 (sample no. in Table 1, 1.03 mm SL, 0 months old); D (whole animal, dorsal view), E (whole animal, left lateral view), O5 (1.15 mm SL, 1 month old); F (animal showing shield, posterior carapace, and some appendages, dorsal view), O7 (1.43 mm SL, 2 months old).
FIGURE 2 in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 2. Photos of adults of coenobitid crab species commonly found in the Ryukyu Archipelago, Japan. A, B, Coenobita purpureus; C, D, Coenobita rugosus; E, F, Coenobita violascens.
FIGURE 5. Coenobita brevimanus. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 5. Coenobita brevimanus. A (whole animal, dorsal view), B (whole animal, left lateral view), ON2 (sample no. in Table 1, 0.87 mm SL, 0 months old); C (whole animal, dorsal view), D (animal showing shield and posterior carapace, left lateral view), ON5 (1.10 mm SL, 1 month old); E (animal showing shield, posterior carapace, and some appendages, dorsal view), F (animal showing shield and posterior carapace, left lateral view), ON6 (1.40 mm SL, 1 month old).
FIGURE 6. Coenobita brevimanus. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 6. Coenobita brevimanus. A (animal showing shield, posterior carapace, and some appendages, dorsal view), B (animal showing shield, posterior carapace, and some appendages, left lateral view), C (animal showing left appendages, left lateral view), ON35 (sample no. in Table 1, 2.51 mm SL, 11 months old); D (live crab with a gastropod shell, dorsal view) (approximately 1.7 mm SL, 5 months old).
FIGURE 14. Coenobita violascens. A in Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species
FIGURE 14. Coenobita violascens. A (whole animal, dorsal view), B (whole animal, left lateral view), K11 (sample no. in Table 2, 1.53 mm SL, 4 months old); C (whole animal, dorsal view), D (whole animal, left lateral view), K15 (1.51 mm SL, 5 months old); E (animal showing ocular peduncles, ocular acicles, shield, posterior carapace and left appendages, dorsal view), F (whole animal, left lateral view), K30 (2.03 mm SL, 10 months old).
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.