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.
57
datasets available to search
ShareScore release 0.9.0
Dataset results
57 results for “crater lake”
Data from: Strong assortative mating by diet, color, size, and morphology but limited progress toward sympatric speciation in a classic example: Cameroon crater lake cichlids
Open the record for dataset details and reuse information.
Data from: Genomic islands of speciation separate cichlid ecomorphs in an East African crater lake
Open the record for dataset details and reuse information.
Data from: Allopatry, competitor recognition and heterospecific aggression in crater lake cichlids
Open the record for dataset details and reuse information.
Data from: Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation
Open the record for dataset details and reuse information.
Data from: Crater lake habitat predicts morphological diversity in adaptive radiations of cichlid fishes
Open the record for dataset details and reuse information.
Data from: The comparative genomic landscape of adaptive radiation in Crater Lake cichlid fishes
Open the record for dataset details and reuse information.
Data from: Weak disruptive selection and incomplete phenotypic divergence in two classic examples of sympatric speciation: Cameroon crater lake cichlids
Open the record for dataset details and reuse information.
Data from: MicroRNA gene regulation in extremely young and parallel adaptive radiations of crater lake cichlid fish
Open the record for dataset details and reuse information.
Data from: Genomic signatures of divergent selection and speciation patterns in a 'natural experiment', the young parallel radiations of Nicaraguan crater lake cichlid fishes
Divergent selection is the main driving force in sympatric ecological speciation and may also play a strong role in divergence between allopatric populations. Characterizing the genome-wide impact of divergent selection constitutes often a first step in the process of unraveling the genetic bases underlying adaptation and ecological speciation. The Midas cichlid fish (Amphilophus citrinellus) species complex in Nicaragua is a powerful system for studying evolutionary processes. Independent colonizations of isolated young crater lakes by Midas cichlid populations from the older and great lakes of Nicaragua resulted in the repeated evolution of adaptive radiations by intralacustrine sympatric speciation. In this study we performed genome scans on two repeated radiations of crater lake species and their great lake source populations (1030 polymorphic AFLPs, n ≈ 30 individuals per species). We detected regions under divergent selection (0.3 % in the crater lake Xiloá flock and 1.7 % in the older crater lake Apoyo radiation) that might be responsible for the sympatric diversification. We find no evidence that the same genomic regions have been involved across crater lake flocks. The data provide evidence, however, for some genetic parallelism (seven out of 51 crater lake to great lake outlier loci are shared; 13.7%) associated with the allopatric divergence of both crater lake flocks. Furthermore, our results suggest that the number of outlier loci involved in sympatric and allopatric divergence increases with time. A phylogeny based on our data clearly supports the monophyly of both crater lake species flocks and provides evidence for a parallel branching order with a primary divergence along the limnetic-benthic axis in both radiations.
Data from: Genomic architecture of ecologically divergent body shape in a pair of sympatric crater lake cichlid fishes
Determining the genetic bases of adaptations and their roles in speciation are prominent issues in evolutionary biology. Cichlid fish species flocks are a prime example of recent rapid radiations often associated with adaptive phenotypic divergence from a common ancestor within a short period of time. In several radiations of freshwater fishes divergence in eco-morphological traits including body shape, color, lips and jaws, are thought to underlie their ecological differentiation, specialization and – ultimately – speciation. The Midas cichlid species complex (Amphilophus spp.) of Nicaragua provides one of the few known examples of sympatric speciation where species have rapidly evolved different but parallel morphologies in young crater lakes. This study identified significant QTL for body shape, using SNPs generated via ddRAD sequencing and geometric morphometric analyses of a cross between two ecologically and morphologically divergent, sympatric cichlid species endemic to crater Lake Apoyo: an elongated limnetic species (A. zaliosus) and a high-bodied benthic species (A. astorquii). A total of 453 genome-wide informative SNPs were identified in 240 F2 hybrids. These markers were used to construct a genetic map in which 25 linkage groups were resolved. Seventy-two segregating SNPs were linked to 11 QTL. By annotating the two most highly supported QTL-linked genomic regions, genes that might contribute to divergence in body shape along the benthic-limnetic axis in Midas cichlid sympatric adaptive radiations were identified. These results suggest that few genomic regions of large effect contribute to early-stage divergence in Midas cichlids.
Phenomenological images (CL-CAM1B) of Crater Lake CALM site, Deception island, Antarctica (2022).
<p>Images acquired by a phenomenological automatic time-lapse camera (CL-CAM1B) located in Crater Lake permafrost and active layer monitoring site in Crater Lake sounders in Deception island, Antarctica, in 2022.</p> <ul> <li>File code: DEC_CL_CAM1B_2022_v100</li> <li>Location code: DEC</li> <li>Site code: CL</li> <li>Instrument code: CAM1B</li> <li>Period: 2022</li> <li>Version: 1.0.0 (jpg images as they were obtained from camera, without processing)</li> <li>Camera/manufacturer: CC5MPX by Campbell Scientific Inc.</li> <li>Resolution/Type/Format: 5Mpixels in RGB in jpg files</li> <li>Frequency: 3 images per day at 14h, 15h and 16h GMT</li> <li>Site: Close to Crater Lake CALM site, in Crater Lake sounders of Deception island, Antarctica.</li> <li>Location: </li> <li>Elevation:</li> <li>Initial dataset date/time: January 14, 2022 14:00h GMT</li> <li>Final dataset date/time: January 9, 2022 16:00h GMT</li> <li>Gaps: None</li> <li>Notes: <ul> <li>Folders: 15</li> <li>Files: 1289</li> <li>Other files: none</li> <li>Folder names structure: year_month</li> <li>Datafiles names structure: Site_camera_year_month_day_hour_minute_second.jpg</li> </ul> </li> </ul>
Data from: Genomic architecture of ecologically divergent body shape in a pair of sympatric crater lake cichlid fishes
Open the record for dataset details and reuse information.
Data from: Don’t throw out the sympatric speciation with the crater lake water: fine-scale investigation of introgression provides equivocal support for causal role of secondary gene flow in one of the clearest examples of sympatric speciation
Open the record for dataset details and reuse information.
Data from: The role of rare morph advantage and conspicuousness in the stable gold-dark colour polymorphism of a crater lake Midas cichlid fish
Open the record for dataset details and reuse information.
Data from: Genomic signatures of divergent selection and speciation patterns in a 'natural experiment', the young parallel radiations of Nicaraguan crater lake cichlid fishes
Open the record for dataset details and reuse information.
Epigenetic Divergence during Early Stages of Speciation in an African Crater Lake Cichlid Fish
GEO Series GSE174120. Astatotilapia calliptera. 66 samples. Type: Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing.
FIG. 45 in Ciliated protozoa from a volcanic crater-lake in Victoria, Australia
FIG. 45. Closely related genera of Pleuroplites australis, and P. australis as described by Foissner (1988). (A) Foissnerides heliophagus, after Song and Wilbert, 1989. (B) Pseudoprorodon emmae, after Song and Wilbert, 1989. (C) Pleuroplites australis, after Foissner 1988. C, clavate cilia; CV, contractile vacuole; E, extrusomes; FV, food vacuole; Ma, macronucleus; mi, micronucleus. Note the continuous variation in the morphology of the organisms shown in (A)±(C).
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.