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1,003 results for “darkness”
Figure 15 in The dark side of birds: melanism-facts and fiction
Figure 15. Feral Pigeons Columba livia with phaeomelanised plumage (ash-red) but different wing patterns: (A) Barred (the white primaries and head feathers are the product of leucism), (B) Chequer and (C) T-pattern chequer, Leiden, the Netherlands, 19 August 2007 (Hein van Grouw)
Figure 20 in The dark side of birds: melanism-facts and fiction
Figure 20. Normal-coloured and black-shouldered female Indian Peafowls Pavo cristatus; the 'black-shoulder' mutation has a major effect on female plumage (Hein van Grouw)
Figure 3 in The dark side of birds: melanism-facts and fiction
Figure 3. Common Woodpigeon Columba palumbus specimens (NHMUK 1930.8.14.1, NHMUK 2000.11.1, NHMUK 1923.3.8.1); the phaeomelanised plumage is probably the product of a similar mutation as 'recessive red' in Feral Pigeon C. livia (cf. Fig. 2D) (Harry Taylor, © Natural History Museum, London) Figure 4. 'Perdix montana', the phaeomelanistic variety of Grey Partridge P. perdix, NHMUK 1939.12.9.3717, Nasavad, Slovakia, 10 November 1932 (at left) and NHMUK 1939.12.9.3716, Norfolk, England, October 1911; the gene for this recessive mutation is present throughout the range of the species and is therefore a frequently recurring variety on the borderline of being recognised as a morph (Harry Taylor, © Natural History Museum, London)
Figure 14A in The dark side of birds: melanism-facts and fiction
Figure 14A. Melanistic Tawny Owl Strix aluco, Switzerland, April 2015 (Bertrand Ducret); (B) melanistic morph of Ural Owl Strix uralensis, southern Poland, May 2008 (Chris van Rijswijk)
Figure 10. Melanistic White Wagtail Motacilla a in The dark side of birds: melanism-facts and fiction
Figure 10. Melanistic White Wagtail Motacilla a. alba, Ardivachar, South Uist, Outer Hebrides, Scotland, September 2015; the normal black head markings have overrun their boundaries, whilst the rest of the plumage is darker as well (John Kemp) Figure 11. Melanistic Great Tit Parus major, Rotterdam, the Netherlands, November 2008; the normal black head and breast markings have overrun their boundaries, whilst the rest of the plumage is darker as well (Harvey van Diek)
Figure 19 in The dark side of birds: melanism-facts and fiction
Figure 19. Normal-coloured and black-shouldered male Indian Peafowls Pavo cristatus; apart from parts of the wing and shoulders, this mutation does not affect the rest of male plumage (Hein van Grouw)
Figure 21. A in The dark side of birds: melanism-facts and fiction
Figure 21. A form of melanism in Mallard Anas platyrhynchos that affects female plumage much more than male plumage (Hein van Grouw)
Figure 9 in The dark side of birds: melanism-facts and fiction
Figure 9. Common Chaffinch Fringilla coelebs, Utö Island, Finland, 13 April 2013, with increased phaeomelanin resulting in predominantly reddish-brown plumage (Jorma Tenovuo)
Figure 7 in The dark side of birds: melanism-facts and fiction
Figure 7. Melanistic Water Rail Rallus aquaticus (NHMUK 1939.12.9.3699, Ireland, 13 November 1902), with increased eumelanin, resulting in almost solid black plumage (Harry Taylor, © Natural History Museum, London) Figure 8A. Melanistic Common Snipe Gallinago gallinago (NHMUK 1939.12.9.3643, Ireland), the same form as was previously described as Sabine's Snipe Scolopax sabinii Vigors, 1825; (B) Melanistic Common Quail Coturnix coturnix (NHMUK 1996.41.442, England, 1895), the same form as was previously described as Verreaux's Quail Synoicus lodoisiae Verreaux & des Murs, 1862 (Harry Taylor, © Natural History Museum, London)
Figure 27 in The dark side of birds: melanism-facts and fiction
Figure 27. Depiction in Schaaning (1921) of another form of melanism in Black Grouse Lyrurus tetrix that changes the pattern and markings, resulting in a paler appearance than normal (Hein van Grouw, © Natural History Museum, London)
Figure 2 in The dark side of birds: melanism-facts and fiction
Figure 2. Feral Pigeons Columba livia: (A) wild phenotype, Leiden, the Netherlands, 19 August 2007; the grey wing-coverts and black wingbars are the result of different distribution of the same quantity of black melanin granules (Hein van Grouw); (B) T-pattern chequer, Leiden, the Netherlands, 19 August 2007; as a result of a dominant mutation of the pattern gene, the pigmentation over almost the entire wings is distributed as usually found only in the black wingbars, resulting in a blackish appearance, but the rump, tail and underparts are unaffected (Hein van Grouw); (C) Black, Leiden, the Netherlands, 19 August 2007; due to a dominant mutation known as 'spread', all pigment granules are equally spread, resulting in black plumage throughout (Hein van Grouw); (D) Recessive red, Pismo, California, USA; due to a recessive mutation of the extension gene that inactivates MC1R, phaeomelanin alone is produced (Robert Shriner)
Figure 26 in The dark side of birds: melanism-facts and fiction
Figure 26. Another form of melanism in Black Grouse Lyrurus tetrix specimens at Zoological Research Museum Alexander Koenig, Bonn, which alters the pattern and markings, resulting in a paler appearance than normal; compare female with right-hand bird in Fig. 24. (Hein van Grouw)
Fig. 1 in A new dark-dotted species of Hypostomus Lacépède (Siluriformes: Loricariidae) from rio Paraguaçu, Bahia State, Brazil
Fig. 1. Hypostomus jaguar, holotype, MZUSP 110603, 164.8 mm SL, from the rio Paraguaçu, Bahia State, Brazil.
Fig. 2. Simplified neighbor-joining tree reconstructed from partial cox1 in Lurking in the dark: Cryptic Strongyloides in a Bornean slow loris
Fig. 2. Simplified neighbor-joining tree reconstructed from partial cox1 gene (716 bp) sequences of Strongyloides spp. S. fuelleborni sequences for Bornean primates cluster within the S. fuelleborni group, together with previously described sequences for the parasite found in African and Japanese primates. The S. stercoralis cluster includes sequences from humans from Laos, Africa and Japan, captive chimpanzees, and dogs. The Strongyloides sp. cluster corresponds to sequences from the slow loris. An alternative hypothesis is presented next to the tree, where instead of representing a different species, Strongyloides sp. would be part of a cryptic assemblage within the S. stercoralis group.
Fig. 1. Sampling sites within Lots 6 and 7 in Lurking in the dark: Cryptic Strongyloides in a Bornean slow loris
Fig. 1. Sampling sites within Lots 6 and 7 of the Lower Kinabatangan Wildlife Sanctuary, Malaysian Borneo (Nm = Nycticebus menagensis, Pp = Pongo pygmaeus, Mf = Macaca fascicularis, Nl = Nasalis larvatus, Tc = Trachypithecus cristatus, DGFC = Danau Girang Field Centre).
Distinguishing between pan assay interference compounds (PAINS) that are promiscuous or represent dark chemical matter - data set and prediction models
<p>Data sets of promiscuous PAINS (PROM_PAINS) and dark chemical matter PAINS (DCM_PAINS) are provided and support vector machine models built on the basis of original and balanced training data (see readme.txt).<br> </p>
Dark Skies ISS - Community Health
Results of the community health analysis of the Dark Skies ISS project (January 2016 - December 2018)
Dark Sky Meter - Community Health
Results of the community health analysis of the Dark Sky Meter project (January 2016 - December 2018)
Dark Sky Meter - Community Health
Results of the community health analysis of the Dark Sky Meter project (January 2016 - December 2018)
Humans trust central vision more than peripheral vision even in the dark
<p>Dataset relative to the following publication:</p> <p>Gloriani, A. H., & Schütz, A. C. (2019). Humans trust central vision more than peripheral vision even in the dark. Current Biology, 29, 1206–1210.</p>
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.