Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,003
datasets available to search
ShareScore release 0.9.0
Dataset results
1,003 results for “darkness”
Figure 4 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 4 Results of the analysis of biometric data of "Thiara" aspera (Lesson, 1831) specimens from Australia (yellow), Indonesia (green), Thailand (red) and India/Sri Lanka (blue) and type material of Melaniaaspera Lesson, 1831 (holotype, triangle), Melaniarudis Lea & Lea, 1851 (syntype, square) and Melaniamicrostoma Lea & Lea, 1851 (syntype, diamond). A. Scatter plot of the first two axes of the principal component analysis (PCA) of biometric data. Coloured lines indicate the outline of the convex hull for each geographic group; B, C. Boxplots of PCA 1 (B) and PCA 2 (C); bars above the box plots indicate significant differences of groups resulting from testing with Dunn's test.
Figure 3 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 3 Measured shell parameters. A: H – shell height; W – shell width; BW – body whorl height; AL – aperture length; AW – aperture width. B: he – height of embryonic shell; we – width of embryonic shell; de – maximum diameter at one whorl.
Figure 2 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 2 Distribution and reproductive strategy of "Thiara" aspera (Lesson, 1831). Stars: type localities of a) Melaniaaspera Lesson, 1831, Monokwari, New Guinea, b) Melaniarudis Lea & Lea, 1851, Amboyna and c) Melaniamicrostoma Lea & Lea, 1851, mountain streams, isle of Negros, Philippines. Pie charts show the percentages of offspring in the brood pouch of female T.aspera in different size classes as defined in Glaubrecht et al. (2009), see inset. The numbers near the pie charts refer to the number of individuals examined per population. Filled circles: material preserved in ethanol; open circles: dry shells.
Figure 6 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 6 Juvenile and embryonic shells of "Thiara" aspera (Lesson, 1831), SUT 0311020, Samut Sakhon Province, Klong Don Ko. A. Lateral view; B. Apical whorls, lateral, C. Apical view. D. Details of the protoconch. Scale bars: 450 µm (A); 250 µm (B); 200 µm (C); 100 µm (D).
Figure 1 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 1 Shells of "Thiara" aspera (Lesson, 1831). A. Holotype of Melaniaaspera Lesson, 1831, MNHN 21098, 'La Nouvelle-Guinée' [more specifically Manokwari on New Guinea Island, West Papua, Indonesia, see Glaubrecht and Podlacha 2010]; B. Syntype of Melaniarudis Lea & Lea, 1851, USNM 119778, Amboyna; C. Syntype of Melaniamicrostoma Lea & Lea, 1851, USNM 119722, mountain streams, isle of Negros, Philippines; D.ZMB 107002, Calcutta, India; E.ZMB 107003, Ceylon, Sri Lanka; F.ZMB 127534, Don Ko Canal, Nakhon Pathom, Thailand; G.ZMB 127535, Don Ko Canal, Nakhon Pathom, Thailand; H.ZMB 127535, Don Ko Canal, Nakhon Pathom, Thailand; I.ZMB 191279, Yehembang River, Bali, Indonesia; J.ZMB 191279, Yehembang River, Bali, Indonesia; K.ZMB 106472, Yehembang, Bali, Indonesia; L. East of Mendaya, stream southwest of Gumicik, Bali, Indonesia; M.ZMB 191278, stream at Tembeeha, road Tirobus-Kendari, Southwest Sulawesi, Indonesia; N.ZMB 107378, Banggai Islands, Peleng Island, West of Peninsula, Tataban river, Central Sulawesi, Indonesia; O.ZMB 107377, Banggai Islands, Peleng Island, West of Peninsula, Tataban river, Central Sulawesi, Indonesia.river; P, Q.ZMB 107617, Wabalarr, Roper River, Northern Territory, Australia; R.ZMB 106599, Berry Springs, Northern Territory, Australia. Scale bar: 1 cm.
Figure 5 from: Boonmekam D, Krailas D, Gimnich F, Neiber MT, Glaubrecht M (2019) A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae). Zoosystematics and Evolution 95(2): 373-390. https://doi.org/10.3897/zse.95.34486
Figure 5 Bayesian 50% majority-rule consensus tree based on partial sequences mitochondrial cytochrome c oxidase subunit 1 (cox1) and 16S rRNA (16S) genes. Support values at nodes refer to Bayesian posterior probabilities (left), Maximum Likelihood (middle) and Maximum Parsimony (right) bootstrap values. AUS: Australia, IDN: Indonesia, THA: Thailand. Numbers at tips refer to DNA vouchers in the collection of the ZMB, see also Table 1.
Figure 1 from: Fernandes CS, Batalha MA, Bichuette ME (2019) Dark diversity in the dark: a new approach to subterranean conservation. Subterranean Biology 32: 69-80. https://doi.org/10.3897/subtbiol.32.38121
Figure 1 Caves studied in São Domingos karst area, state of Goiás, Brazil. 1. Lapa do Angélica; 2. Lapa do Bezerra; 3. Lapa da Terra Ronca II; 4. Lapa da Terra Ronca I (Terra Ronca System); 5. Lapa São Bernardo. NP2lj = sequences of sedimentary rocks with low metamorphism; NP2sl = metalimestones intercalated with silty clay to sandy sediments; NP2sh = predominantly silty-clay sediments.
Supplementary material 1 from: Fernandes CS, Batalha MA, Bichuette ME (2019) Dark diversity in the dark: a new approach to subterranean conservation. Subterranean Biology 32: 69-80. https://doi.org/10.3897/subtbiol.32.38121
: Data type: script
Figure 2 from: Fernandes CS, Batalha MA, Bichuette ME (2019) Dark diversity in the dark: a new approach to subterranean conservation. Subterranean Biology 32: 69-80. https://doi.org/10.3897/subtbiol.32.38121
Figure 2 Representative photographs of sampled caves. A Lapa do Angélica (photo: A. Gambarini) B entrance of Lapa da Terra Ronca I (photo: ME Bichuette) C Guano pile inside Lapa do São Bernardo (photo: A. Gambarini).
FIGURE 200. More typical dark color, this male G in Crickets of the genus Gryllus in the United States (Orthoptera: Gryllidae: Gryllinae)
FIGURE 200. More typical dark color, this male G. veletisoides from Fresno Co., CA (S03-21).
Figure 11 in Scopaeus saotomensis spec. nov., a flightless rove beetle from the Island of São Tomé (Coleoptera: Staphylinidae: Paederinae: Lathrobiini) - Isolation and adaptation in a dark, humid, tropical forest environment
Figure 11. The pitfall trap (arrow) in situ at Lagoa Amélia illustrating the exact collecting spot for Scopaeus saotomensis.
Fig. 3 in Argulus coregoni (Crustacea: Branchiura: Argulidae) Parasitic on a Dark Chub Nipponocypris temminckii (Cypriniformes: Xenocyprididae) in a Stream, Central Japan, with a List of Its Known Hosts in East Asia
Fig. 3. Argulus coregoni, adult male, NSMT-Cr 31596. A, Respiratory areas, ventral view; B, caudal rami, ventral view; C, first antenna (a1), second antenna (a2), and postantennal spine (pas), ventral view; D, third and apical segments of first antenna, ventral view; E, second, third, fourth, and apical segments of second antenna, ventral view; F, preoral sheath and stylet, ventral view; G, mouth tube, ventral view; H, three anterior supporting rods and marginal projections from rim of first maxilla sucker, ventral view; I, second maxilla and denticle (enlarged) on second segment, ventral view; J, raised field on first segment of second maxilla, ventral view; K, third, fourth, and terminal segments of second maxilla, ventral view. Scale bars: A, 0.2 mm; B, E–G, J, K, 0.05 mm; C, I, 0.1 mm; D, H, 0.03 mm.
Text-fig. 1. Location of the Bohemian Cretaceous Basin in Central Europe (left) and location of the fossil site mentioned in this paper (right). Dark grey area indicates the Cretaceous Basin; light grey area indicates the Bohemian Massif (after Uličný et al. 1997). in New Cycad Foliage Of Pseudoctenis Babinensis From The Bohemian Cenomanian
Text-fig. 1. Location of the Bohemian Cretaceous Basin in Central Europe (left) and location of the fossil site mentioned in this paper (right). Dark grey area indicates the Cretaceous Basin; light grey area indicates the Bohemian Massif (after Uličný et al. 1997).
FIGURE 2 in Taxonomy and DNA barcoding of the dark-winged fungus gnat genus Zygoneura Meigen (Diptera: Sciaridae) from China, with revision of the type materials
FIGURE 2. Neighbor-joining (NJ) tree of Zygoneura Meigen based on COI gene fragment.
FIGURE 1 in Flowering in darkness: a new species of subterranean orchid Rhizanthella (Orchidaceae; Orchidoideae; Diurideae) from Western Australia
FIGURE 1. Phenology of Rhizanthella. Illustrated by K. Dixon.
Linked collectors and determiners for: Capobula gen. nov., a new Afrotropical dark sac spider genus related to Orthobula Simon, 1897 (Araneae: Trachelidae).
Natural history specimen data linked to collectors and determiners held within, "Capobula gen. nov., a new Afrotropical dark sac spider genus related to Orthobula Simon, 1897 (Araneae: Trachelidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/25d73144-c90c-45c3-a9a2-2454f87a9aef">https://bionomia.net/dataset/25d73144-c90c-45c3-a9a2-2454f87a9aef</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/25d73144-c90c-45c3-a9a2-2454f87a9aef">https://gbif.org/dataset/25d73144-c90c-45c3-a9a2-2454f87a9aef</a>. Formatted as a Frictionless Data package.
Data for MS: Optimization of signal and noise in x-ray phase and dark field imaging with a wire mesh
Open the record for dataset details and reuse information.
Data from: The flashlight fish Anomalops katoptron uses bioluminescent light to detect prey in the dark
Bioluminescence is a fascinating phenomenon occurring in numerous animal taxa in the ocean. The reef dwelling splitfin flashlight fish (Anomalops katoptron) can be found in large schools during moonless nights in the shallow water of coral reefs and in the open surrounding water. Anomalops katoptron produce striking blink patterns with symbiotic bacteria in their sub-ocular light organs. We examined the blink frequency in A. katoptron under various laboratory conditions. During the night A. katoptron swims in schools roughly parallel to their conspecifics and display high blink frequencies of approximately 90 blinks/minute with equal on and off times. However, when planktonic prey was detected in the experimental tank, the open time increased compared to open times in the absence of prey and the frequency decreased to 20% compared to blink frequency at night in the absence of planktonic prey. During the day when the school is in a cave in the reef tank the blink frequency decreases to approximately 9 blinks/minute with increasing off-times of the light organ. Surprisingly the non-luminescent A. katoptron with non-functional light organs displayed the same blink frequencies and light organ open/closed times during the night and day as their luminescent conspecifics. In the presence of plankton non-luminescent specimens showed no change in the blink frequency and open/closed times compared to luminescent A. katoptron. Our experiments performed in a coral reef tank show that A. katoptron use bioluminescent illumination to detect planktonic prey and that the blink frequency of A. katoptron light organs follow an exogenous control by the ambient light.
Data from: The costs of being dark: the genetic basis of melanism and its association with fitness-related traits in the sand cricket
Melanism is an important component of insect cuticle and serves numerous functions that enhance fitness. Despite its importance, there is little information on its genetic basis or its phenotypic and genetic correlation with fitness-related traits. Here, we examine the heritability of melanism in the wing dimorphic sand cricket and determine its phenotypic and genetic correlation with wing morphology, gonad mass and size of the dorso-longitudinal muscles (the principle flight muscles). Previously demonstrated trade-offs among these traits are significant factors in the evolution of life history variation. Using path analysis, we show that melanization is causally related to gonad mass, but not flight muscle mass. Averaged over the sexes, the heritability of melanism was 0.61, the genetic correlation with gonad mass was −0.36 and with wing morph was 0.51. The path model correctly predicted the ranking of melanization score in lines selected for increased ovary mass, increased flight muscle mass, an index that increased both traits and an unselected control. Our results support the general hypothesis that melanization is costly for insects and negatively impacts investment in early reproduction.
Data from: Genetic barcoding of dark-spored myxomycetes (Amoebozoa)—Identification, evaluation and application of a sequence similarity threshold for species differentiation in NGS studies
Unicellular, eukaryotic organisms (protists) play a key role in soil food webs as major predators of microorganisms. However, due to the polyphyletic nature of protists, no single universal barcode can be established for this group, and the structure of many protistean communities remains unresolved. Plasmodial slime moulds (Myxogastria or Myxomycetes) stand out among protists by their formation of fruit bodies, which allow for a morphological species concept. By Sanger sequencing of a large collection of morphospecies, this study presents the largest database to date of dark-spored myxomycetes and evaluate a partial 18S SSU gene marker for species annotation. We identify and discuss the use of an intraspecific sequence similarity threshold of 99.1% for species differentiation (OTU picking) in environmental PCR studies (ePCR) and estimate a hidden diversity of putative species, exceeding those of described morphospecies by 99%. When applying the identified threshold to an ePCR data set (including sequences from both NGS and cloning), we find 64 OTUs of which 21.9% had a direct match (>99.1% similarity) to the database and the remaining had on average 90.2 ± 0.8% similarity to their best match, thus thought to represent undiscovered diversity of dark-spored myxomycetes.
ScienceDex guides
Understand access before you commit
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.