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Dataset results
617 results for “base population”
Data from: Machine learning based detection of adaptive divergence of the stream mayfly Ephemera strigata populations
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Data from: Novel methods to define invasive procedures at the end-of-life were developed to improve quality of end of life care research: A population-based cohort study in colorectal cancer
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Data from: When can model-based estimates replace surveys of wildlife populations that span many discrete management units?
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Hybridization selects for prime-numbered life cycles in Magicicada: an individual-based simulation model of a structured periodical cicada population
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Data from: Effective population size of Culex quinquefasciatus under insecticide-based vector management and following Hurricane Harvey in Harris County, Texas
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Simulated population time series used to build and test a model of accuracy for population-based global biodiversity indicators
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Populations of arable weed species show intra-specific variability in germination base temperature but not in early growth rate
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Model for: Characterizing long‐term population conditions of the elusive red tree vole with dynamic individual‐based modeling
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Abiotic environments can modify the penetrance of transgene-based lethality systems for insect population control
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Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears
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Determining haploblocks and haplotypes in the MAGIC winter wheat population WM-800 based on the wheat 15k Infinium and the 135k Affymetrix SNP arrays
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Risk factors for non-communicable diseases in Bangladesh: Findings of the population-based cross-sectional national survey 2018
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Population-based heteropolymer design to mimic protein mixtures
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Distribution. Only known with certainty from Mozambique (based on recent morphometric studies), but populations from S South Sudan, Kenya, Tanzania, Congo Basin to N Angola and S to Mozambique and NE South Africa, including Unguja I (Zanzibar Archipelago) are tentatively included here. in Rhinolophidae
Distribution. Only known with certainty from Mozambique (based on recent morphometric studies), but populations from S South Sudan, Kenya, Tanzania, Congo Basin to N Angola and S to Mozambique and NE South Africa, including Unguja I (Zanzibar Archipelago) are tentatively included here.
Data from: Mining the stable quantitative trait loci for agronomic traits in wheat (Triticum aestivum L.) based on an introgression line population
<p><span><span><b>Background</b>: Human demand for wheat will continue to increase together with the continuous global population growth. Agronomic traits in wheat are susceptible to environmental conditions. Therefore, in breeding practice, priority is given to QTLs of agronomic traits that can be stably detected across multiple environments and over many years.</span></span></p> <p><span><span><b>Results: </b>In this study, QTL analysis was conducted for eight agronomic traits using an introgression line population across eight environments (drought stressed and well-watered) for five years. In total, 44 additive QTLs for the above agronomic traits were detected on 15 chromosomes. Among these, <i>qPH-6A</i>, <i>qHD-1A</i>, <i>qSL-2A</i>, <i>qHD-2D</i> and<i> qSL-6A</i> were detected across seven, six, five, five and four environments, respectively. The means in the phenotypic variation explained by these five QTLs were 12.26%, 9.51%, 7.77%, 7.23%, and 8.49%, respectively. </span></span></p> <p><b>Conclusions: </b>We identified five stable QTLs, which includes <i>qPH-6A</i>, <i>qHD-1A</i>, <i>qSL-2A</i>, <i>qHD-2D</i> and<i> qSL-6A</i>. They play a critical role in wheat agronomic traits. One of the dwarf genes<i> Rht14</i>, <i>Rht16</i>, <i>Rht18</i> and <i>Rht25</i> on chromosome 6A might be the candidate gene for <i>qPH-6A</i>. The <i>qHD-1A</i> and <i>qHD-2D</i> were novel stable QTLs for heading date and they differed from known vernalization genes, photoperiod genes and earliness per se genes.</p>
Data from: Population genetic structures of two ecologically distinct species Betula platyphylla and B. ermanii inferred based on nuclear and chloroplast DNA markers
Climatic oscillations during the last glacial maximum (LGM) significantly affected the distribution patterns and genetic structure of extant plants. Northeast China (NEC) is a major biodiversity center in East Asia, and the influence of historical climate change on NEC populations is critical for understanding species responses to future climate change. However, only a few phylogeographic studies of cool-temperate deciduous tree species have been conducted in the area, and results are inconsistent for species with different niches or distribution areas. We employed multiple chloroplast and nuclear markers to investigate the genetic structure of two ecologically contrasting species, Betula platyphylla and B. ermanii, in NEC. Rare haplotypes were identified in the chloroplast genome of these species, and both exhibited high levels of nucleotide diversity based on a fragment of the nuclear gene G3PDH and microsatellites. Moreover, significant phylogeographic structure was detected for B. platyphylla, suggesting that these populations had recolonized from independent glacial refuges, whereas no genetic structure was found for B. ermanii.
Data from: Population genetic structure and intraspecific genetic distance of Periplaneta americana (Blattodea: Blattidae) based on mitochondrial and nuclear DNA markers
<p>The American cockroach (<i>Periplaneta americana</i>) is a globally invasive pest that can cause significant economic loss and threaten human health. Although it is abundant and lives in close proximity to humans, few studies have investigated the genetic diversity of <i>P. americana</i>. Our study analyzed 1053 <i>P. americana</i> and other <i>Periplaneta</i> species' samples from different locations in China and the USA. A traditional tree-based method using 17 unique mitochondrial COI haplotypes of <i>P. americana</i> and 20 haplotypes of the other <i>Periplaneta</i> species accurately identified <i>P. americana</i> with a barcoding threshold of 5.1%. To identify the population genetic structure of <i>P. americana,</i> we investigated <i>wingless</i> gene and pooled them with obtained mtDNA data for a combined analysis. Although the genetic diversity of the USA group was relatively higher than the China group, the number of haplotypes and alleles of both groups was small. Molecular variance (AMOVA), intraspecific phylogeny, and haplotype networks indicated that <i>P. americana</i> had very little global genetic differentiation. The weak geographic genetic structure might reflect the human-mediated dispersal of <i>P. americana</i>. Despite no apparent phylogeographic assignment of mtDNA and nuclear lineages was observed in both BI trees, the integrated COI sequence data identified four distinct <i>P. americana</i> haplotype groups, showing four ancient maternal lineages of <i>P. americana</i> in China and the USA.</p>
Dopamine axon population Ca signals in the striatum during odor cue- and reward-based choice tasks in mice
<p>Dopamine axon activity in the ventral, dorsomedial, and dorsolateral striatum was recorded, while mice performed a perceptual and value-based decision-making task. In one experiment, thirsty mice performed a perceptual decision-making task using mixtures of odor A and B (100/0, 90/10, 65/35, 35/65, 10/90, 0/100), in which identity of a dominant odor determined an available water port, and odor C which signaled no outcome. A fixed amount of water was always delivered with a correct choice. In the next experiment, mice performed a perceptual and value-based decision-making task using mixtures of odor A and B (100/0, 65/35, 35/65, 0/100), in which identity of a dominant odor determined an available water port, with probabilistic water reward. In this task, a fixed amount of water was delivered in block 1, and then in block 2, one water port delivered big or medium size of water in a pseudo-random order, and another water port delivered medium or small size of water in a pseudo-random order. In both tasks, odor-water port (left or right) rule was held constant throughout training and recording in each animal.</p>
FIGURE 7a–j. Song diagrams per populations. a–e in Taxonomic Studies of the genus Decticus Serville, 1831 from China (Orthoptera Tettigoniidae: Tettigoniinae), based on Morphology and Songs
FIGURE 7a–j. Song diagrams per populations. a–e: D. albifrons; f–j: D. v. verrucivorus; k–o: D. v. crassus (The temperature of m2 is 29.8 °C and others are 27 °C.); a–b, f–g, k–l: A phrase series; c, h, m1–2: Elements in a chirp; d, i, n: Sonogram of the calling song; e, j, o: Power spectrum of the calling song.
Data from: Statin use and cognitive function: population-based observational study with long-term follow-up
We aimed to evaluate the association between statin use and cognitive function. Cognitive function was measured with the Ruff Figural Fluency Test (RFFT; worst score, 0; best score, 175 points) and the Visual Association Test (VAT; low performance, 0–10; high performance, 11–12 points) in an observational study that included 4,095 community-dwelling participants aged 35–82 years. Data on statin use were obtained from a computerized pharmacy database. Analysis were done for the total cohort and subsamples matched on cardiovascular risk (N = 1232) or propensity score for statin use (N = 3609). We found that a total of 904 participants (10%) used a statin. Statin users were older than non-users: mean age (SD) 61 (10) vs. 52 (11) years (p<0.001). The median duration of statin use was 3.8 (interquartile range, 1.6–4.5) years. Unadjusted, statin users had worse cognitive performance than non-users. The mean RFFT score (SD) in statin users and non-users was 58 (23) and 72 (26) points, respectively (p<0.001). VAT performance was high in 261 (29%) statin users and 1351 (43%) non-users (p<0.001). However, multiple regression analysis did not show a significant association of RFFT score with statin use (B, −0.82; 95%CI, −2.77 to 1.14; p = 0.41) nor with statin solubility, statin dose or duration of statin use. Statin users with high doses or long-term use had similar cognitive performance as non-users. This was found in persons with low as well as high cardiovascular risk, and in younger as well as older subjects. Also, the mean RFFT score per quintile of propensity score for statin use was comparable for statin users and non-users. Similar results were found for the VAT score as outcome measure. In conclusion, statin use was not associated with cognitive function. This was independent of statin dose or duration of statin use.
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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.