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375 results for “island population”
Data from: Reproductive tradeoffs and phenotypic selection change with body condition, but not with predation regime, across island lizard populations
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Patterns of genetic divergence and demographic history shed light on island-mainland population dynamics and melanic plumage evolution in the white-winged fairywren
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Data from: An isolated white-tailed deer (Odocoileus virginianus) population on St. John, US Virgin Islands shows low inbreeding and comparable heterozygosity to other larger populations
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Data from: Population size and time since island isolation determine genetic diversity loss in insular frog populations
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Data from: The effect of trait type and strength of selection on heritability and evolvability in an island bird population
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Data from: Islands and streams: clusters and gene flow in wild barley populations from the Levant
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Data from: Genetic variation and structure of house sparrow populations: is there an island effect?
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Pollinator surveys of two populations located in the North and South of Mallorca (Balearic Islands, Spain) in 2021 from May to July focused on Eryngium maritimum pollinators
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Microsatellite data from: Multiple colonizations and genetic differentiation from the mainland populations in insular populations of the perennial herb Solidago virgaurea complex (Asteraceae) on recently formed nearshore oceanic islands
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Population Prehistory in Island Southeast Asia
GEO Series GSE80534. Homo sapiens. 506 samples. Type: SNP genotyping by SNP array; Genome variation profiling by SNP array.
Stable methylation loci are associated with systolic blood pressure in a Croatian island population
GEO Series GSE207927. Homo sapiens. 224 samples. Type: Methylation profiling by genome tiling array.
Studies of canine breed development on the island of Sardinia recapitulate genomic features of human population isolates [MEDI]
GEO Series GSE83154. Canis lupus familiaris. 82 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
Studies of canine breed development on the island of Sardinia recapitulate genomic features of human population isolates [CANE]
GEO Series GSE83225. Canis lupus familiaris. 4 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
Studies of canine breed development on the island of Sardinia recapitulate genomic features of human population isolates [COO]
GEO Series GSE83151. Canis lupus familiaris. 51 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
Breast Milk Extracellular Vesicle miRNAs from a Population-Based Cohort in the Faroe Islands
GEO Series GSE146880. Homo sapiens. 384 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Multi-layered population structure in Island Southeast Asians
GEO Series GSE77508. Homo sapiens. 196 samples. Type: SNP genotyping by SNP array; Genome variation profiling by SNP array.
Data from: Conserved G-matrices of morphological and life-history traits among continental and island blue tit populations
The genetic variance–covariance matrix (G-matrix) summarizes the genetic architecture of multiple traits. It has a central role in the understanding of phenotypic divergence and the quantification of the evolutionary potential of populations. Laboratory experiments have shown that G-matrices can vary rapidly under divergent selective pressures. However, because of the demanding nature of G-matrix estimation and comparison in wild populations, the extent of its spatial variability remains largely unknown. In this study, we investigate spatial variation in G-matrices for morphological and life-history traits using long-term data sets from one continental and three island populations of blue tit (Cyanistes caeruleus) that have experienced contrasting population history and selective environment. We found no evidence for differences in G-matrices among populations. Interestingly, the phenotypic variance–covariance matrices (P) were divergent across populations, suggesting that using P as a substitute for G may be inadequate. These analyses also provide the first evidence in wild populations for additive genetic variation in the incubation period (that is, the period between last egg laid and hatching) in all four populations. Altogether, our results suggest that G-matrices may be stable across populations inhabiting contrasted environments, therefore challenging the results of previous simulation studies and laboratory experiments.
Data from: The role of ecological factors in determining phylogeographic and population genetic structure of two sympatric island skinks (Plestiodon kishinouyei and P. stimpsonii)
We conducted comparative phylogeographic and population genetic analyses of Plestiodon kishinouyei and P. stimpsonii, two sympatric skinks endemic to islands in the southern Ryukyus, to explore different factors that have influenced population structure. Previous phylogenetic studies using partial mitochondrial DNA (mtDNA) indicate similar divergence times from their respective closest relatives, suggesting that differences in population structure are driven by intrinsic attributes of either species rather than the common set of extrinsic factors that both presumably have been exposed to throughout their history. In this study, analysis of mtDNA sequences and microsatellite polymorphism demonstrate contrasting patterns of phylogeography and population structure: P. kishinouyei exhibits a lower genetic variability and lower genetic differentiation among islands than P. stimpsonii, consistent with recent population expansion. However, historical demographic analyses indicate that the relatively high genetic uniformity in P. kishinouyei is not attributable to recent expansion. We detected significant isolation-by-distance patterns among P. kishinouyei populations on the land bridge islands, but not among P. stimpsonii populations occurring on those same islands. Our results suggest that P. kishinouyei populations have maintained gene flows across islands until recently, probably via ephemeral Quaternary land bridges. The lower genetic variability in P. kishinouyei may also indicate smaller effective population sizes on average than that of P. stimpsonii. We interpret these differences as a consequence of ecological divergence between the two species, primarily in trophic level and habitat preference.
Data from: Genetic diversity and drivers of dwarfism in extinct island emu populations
Australia's iconic emu (Dromaius novaehollandiae novaehollandiae) is the only living representative of its genus, but fossil evidence and reports from early European explorers suggest that three island forms (at least two of which were dwarfs) became extinct during the 19th century. While one of these - the King Island emu - has been found to be conspecific with Australian mainland emus, little is known about how the other two forms - Kangaroo Island and Tasmanian emus - relate to the others, or even the size of Tasmanian emus. We present a comprehensive genetic and morphological analysis of Dromaius diversity, including data from one of the few definitively genuine Tasmanian emu specimens known. Our genetic analyses suggest that all the island populations represent sub-populations of mainland D. novaehollandiae. Further, the size of island emus and those on the mainland appears to scale linearly with island size but not time since isolation, suggesting that island size—and presumably concomitant limitations on resource availability—may be a more important driver of dwarfism in island emus, though its precise contribution to emu dwarfism remains to be confirmed.
Figure 1 in Trapping Records of Fruit Fly Pest Species (Diptera: Tephritidae) on Oahu (Hawaiian Islands): Analysis of Spatial Population Trends
Figure 1. Map of trapping sites on Oahu (2006–2008), with habitat at each site.
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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.