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3,585 results for “Population study”
Fig. 1 in A Mark-Recapture Study Of A Dog-Faced Water Snake Cerberus Schneiderii (Colubridae: Homalopsidae) Population In Sungei Buloh Wetland Reserve, Singapore
Fig. 1. Map of Sungei Buloh Wetland Reserve showing the locations of the four brackish ponds (A3-4, A6, C2-3 and C4-5) where Cerberus schneiderii individuals were collected.
Fig. 7 in A Mark-Recapture Study Of A Dog-Faced Water Snake Cerberus Schneiderii (Colubridae: Homalopsidae) Population In Sungei Buloh Wetland Reserve, Singapore
Fig. 7. Cerberus schneiderii.. Scatterplots and fitted regression lines of initial snout-vent length (SVL0) against 'SVL after one month' (SVL1) for males (O, solid line) and females (+, dashed line).
Fig. 8 in A Mark-Recapture Study Of A Dog-Faced Water Snake Cerberus Schneiderii (Colubridae: Homalopsidae) Population In Sungei Buloh Wetland Reserve, Singapore
Fig. 8. Cerberus schneiderii. Percentage frequency distribution of microhabitat types utilised by: a, all snakes (n = 2262); b, males (n = 1206); and c, females (n = 1056).
FIG. 20 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 20. — Microstonyx major (Gervais, 1848), distribution of the summed length (LM1 + LM2 + LM3) of the upper toothrow against its summed breadth (BM1 + BM2 + BM3), in logarithmic scale. Data from Kostopoulos 1994; Bonis & Bouvrain 1996 and original measurements. PIK, Pikermi; KAL, Kalimantsi; MAR, Maragha; TVE, Titov Veles; VTK, Vathylakkos-2; DTK, Dytiko-1; Pk, Petrelik; KER, Kerassia; NKT, Nikiti-1.
FIG. 18 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 18. — Correlation between several metrical characters of the upper and lower toothrows of Microstonyx major (Gervais, 1848). Data from Trofimov 1954; Thenius 1972; Kostopoulos 1994; Bonis & Bouvrain 1996 and original measurements. NKT, Nikiti-1; VTK, Vathylakkos-2; PIK, Pikermi; SAM, Samos; GRE, Grebeniki; TAR, Taraklija; TOD, Tudurovo; STR, Stratzing; LUB, Luberon; TIT, Titov Veles; MAR, Maragha; Pk, Petrelik; KAL, Kalimantsi; PER, Perivolaki; DTK, Dytiko-1; KER, Kerassia; Ez, Ezerovo. LP(p) = Length P2-M3 (p2-m3).
FIG. 19 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 19. — Microstonyx major (Gervais, 1848), distribution of the indices "LM2/LM3" and "Lm2/Lm3" from several Greco- Bulgarian samples. Data from Kostopoulos 1994; Bonis & Bouvrain 1996 and original measurements. NKT, Nikiti-1; MAR, Maragha; VTK, Vathylakkos-2; PIK, Pikermi; KAL, Kalimantsi-1; PER, Perivolaki; KER, Kerassia; DTK, Dytiko-1; Pk, Petrelik; LUB, Luberon; Ez, Ezerovo.
FIG. 15 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 15. — Scatter diagram, indicating the distribution of Microstonyx major (Gervais, 1848) M3/m3 from Kalimantsi (Length against Breadth in the occlusal and alvelolar surface). Original measurements.
FIG. 17 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 17. — Development of M3 with evolution. Abbreviations: Lbasal, condylobasal length of the skull; LM3, length of M3; MN, MNzones; 1-9, specimens from several European localities; 1, Stratzing; 2, Terrassa; 3, Nikiti; 4, Grebeniki; 5, Taraklija; 6, Pikermi; 7, Kalimantsi; 8, Kerassia; 9, Samos. Data from Trofimov 1954; Thenius 1972; Van der Made et al. 1992; Kostopoulos 1994; Bonis & Bouvrain 1996 and original measurements.
FIG. 16 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 16. — Bray Curtis Cluster Analysis based on the comparative percentages of Microstonyx major (Gervais, 1848) M3/m3 mean lengths (Table 7). DTK, Dytiko-1; KAL, Kalimantsi; LUB, Luberon; PIK, Pikermi; PER, Perivolaki; KER, Kerassia; VTK, Vathylakkos 2; MAR, Maragha; NKT, Nikiti-1.
FIG. 13 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 13. — Scatter diagram of Microstonyx major (Gervais, 1848) zygomatic arches distribution (Condylobasal Length of the skull against Greatest Breadth at the zygomatic arches). Data from Gaudry 1862; Trofimov 1954; Kostopoulos 1994 and original measurements. The identity of the specimens is given in Table 6.
FIG. 8 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 8. — Microstonyx major (Gervais, 1848) from Kalimantsi, Bulgaria, occlusal view; A, upper third molar; B, lower third molar. Scale bar: 2 cm.
FIG. 9 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 9. — Scatter diagram of Microstonyx major (Gervais, 1848) M3 distribution (Length against Breadth). Data from Bonis & Bouvrain 1996; Kostopoulos 1994 and original measurements. NKT, Nikiti-1; VTK, Vathylakkos-2; MAR, Maragha; PIK, Pikermi; KER, Kerassia; SAM, Samos; DTK, Dytiko-1; KAL, Kalimantsi; Pk, Petrelik; PER, Perivolaki.
FIG. 4 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 4. — Microstonyx major (Gervais, 1848) from Petrelik, Bulgaria, skull (Pk-5265); A, lateral view; B, occlusal view. Scale bar: 5 cm.
FIG. 2 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 2. — Microstonyx major (Gervais, 1848) from Kalimantsi, Bulgaria, skull (K-5260); A, lateral view; B, occlusal view. Scale bar: 6 cm.
FIG. 5 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 5. — Microstonyx major (Gervais, 1848) from Kalimantsi, Bulgaria, palate (K-5259), occlusal view. Scale bar: 5 cm.
FIG. 3 in Contribution to the study of Microstonyx: evidence from Bulgaria and the SE European populations
FIG. 3. — Microstonyx major (Gervais, 1848) from Kalimantsi, Bulgaria, skull (K-5262), dorso-lateral view. Scale bar: 6 cm.
Sponge diversification in marine lakes: implications for phylogeography and population genomic studies on sponges
<p class="MsoNormal"><span>The relative influence of geography, currents and environment on gene flow within sessile marine species remains an open question. Detecting subtle genetic differentiation at small scales is challenging in benthic populations due to large effective population sizes, general lack of resolution in genetic markers, and because barriers to dispersal often remain elusive. Marine lakes can circumvent confounding factors by providing discrete and replicated ecosystems. Using high-resolution double digest restriction-site associated DNA sequencing (4,826 Single Nucleotide Polymorphisms, SNPs), we genotyped populations of the sponge <em>Suberites diversicolor </em><span>(n=125) to test the relative importance of spatial scales (1-1,400km), local environmental regimes, and permeability of seascape barriers in shaping population genomic structure. </span>With the SNP dataset we show strong intra-lineage population structure, even at scales <10km (average F<sub>ST</sub> = 0.63), that was not detected previously using single markers. Most variation was explained by differentiation between populations (AMOVA: 48.8%) with signatures of population size declines and bottlenecks per lake. Though the populations were strongly structured, we did not detect significant effects of geographic distance, local environments, or degree of connection to the sea on population structure, suggesting mechanisms such as founder events with subsequent priority effects may be at play. We show that the inclusion of morphologically cryptic lineages that can be detected with the COI marker can reduce the obtained SNP set by almost 90%. Future work on sponge genomics should confirm that only one lineage is included. Our results call for a reassessment of poorly dispersing benthic organisms that were previously assumed to be highly connected based on low-resolution markers.</span></p>
Multivariate adaptive shrinkage improves cross-population transcriptome prediction and association studies in underrepresented populations
<p>This Zenodo file collection contains transcriptome prediction models built for PrediXcan, as well as concatenated raw results from S-PrediXcan. Files belong to the research paper "Multivariate adaptive shrinkage improves cross-population transcriptome prediction and association studies in underrepresented populations" published at HGG Advances (2023, doi: 10.1016/j.xhgg.2023.100216). Please refer to the README file for a more detailed description.</p>
Genetic differentiation following recent domestication events: A study of farmed Nile tilapia (Oreochromis niloticus) populations
<p>SNP array data from our research article. It contains the SNP markers in common across the different Nile tilapia (Oreochromis niloticus) populations assessed in the study</p>
Figure 1 in A NOTE ON SAMPLING CHIRONOMIDS FOR RNA-BASED STUDIES OF NATURAL POPULATIONS THAT RETAINS CRITICAL MORPHOLOGICAL VOUCHERS Abstract
Figure 1. Exemplar RNA extraction QA/QC assessments from the 42 extractions conducted. a) ten extractions analysed using 2% w/v agarose gel electrophoresis: lane 1 contains 1 µL Hyperladder IV (Bioline), lane 2 was intentionally blank, samples are from lanes 3-12; b) exemplar Agilent 2100 Bioanalyzer plot of fragment lengths (x axis) against fluorescence units (y axis). The software automatically attempts to identify the 18S and 28S peaks (labelled below the peak trace in smaller font on an angle) to calculate a RIN.
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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.