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59 results for “gene dispersal”
Data from: Combined genetic and telemetry data reveal high rates of gene flow, migration, and long-distance dispersal potential in Arctic ringed seals (Pusa hispida)
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Data from: Reduced incompatibility in the production of second generation hybrids between two Magnolia species revealed by Bayesian gene dispersal modeling
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Anthropogenic disturbance drives dispersal syndromes, demography, and gene flow in amphibian populations
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Data from: Variation at phenological candidate genes correlates with timing of dispersal and plumage morph in a sedentary bird of prey
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Data from: Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls
Non-random gene flow is a widely neglected force in evolution and ecology. This genotype-dependent dispersal is difficult to assess, yet can impact the genetic variation of natural populations and their fitness. In this work, we demonstrate a high immigration rate of barn owls (Tyto alba) inside a Swiss population surveyed during 15 years. Using 10 microsatellite loci as an indirect method to characterize dispersal, two third of the genetic tests failed to detect a female-biased dispersal, and Monte-Carlo simulations confirmed a low statistical power to detect sex-biased dispersal in case of high dispersal rate of both sexes. The capture-recapture data revealed a female-biased dispersal associated with an excess of heterozygote for the melanocortin-1 receptor gene (MC1R), which is responsible for their ventral rufous coloration. Thus, female homozygotes for the MC1R_white allele might be negatively selected during dispersal. Despite the higher immigration of females that are heterozygote at MC1R, non-random gene flow should not lead to a migration load regarding this gene because we did not detect an effect of MC1R on survival and reproductive success in our local population. The present study highlights the usefulness of using multiple methods to correctly decrypt dispersal and gene flow. Moreover, despite theoretical expectations, we show that non-random dispersal of particular genotypes does not necessarily lead to migration load in recipient populations.
Data from: Linking the foraging behavior of three bee species to pollen dispersal and gene flow
Foraging behaviors that impact gene flow can guide the design of pollinator strategies to mitigate gene flow. Reduced gene flow is expected to minimize the impact of genetically engineered (GE) crops on feral and natural populations and to facilitate the coexistence of different agricultural markets. The goal of this study is to link foraging behavior to gene flow and identify behaviors that can help predict gene flow for different bee species. To reach this goal, we first examined and compared the foraging behaviors of three distinct bee species, the European honey bee, Apis mellifera L., the common eastern bumble bee, Bombus impatiens Cr., and the alfalfa leafcutting bee, Megachile rotundata F., foraging on Medicago sativa flowers. Each foraging behavior investigated differed among bee species. Both social bees exhibited directionality of movement and had similar residence, in contrast to the random movement and shorter residence of the solitary bee. Tripping rate and net distance traveled differed among the three bee species. We ranked each behavior among bee species and used the relative ranking as gene flow predictor before testing the predictions against empirical gene flow data. Tripping rate and net distance traveled, but not residence, predicted relative gene dispersal among bee species. Linking specific behaviors to gene flow provides mechanisms to explain differences in gene flow among bee species and guides the development of management practices to reduce gene flow. Although developed in one system, the approach developed here can be generalized to different plant/pollinator systems.
Data from: Calcisponges have a ParaHox gene and dynamic expression of dispersed NK homeobox genes
Sponges are simple animals with few cell types, but their genomes paradoxically contain a wide variety of developmental transcription factors1, 2, 3, 4, including homeobox genes belonging to the Antennapedia (ANTP) class5, 6, which in bilaterians encompass Hox, ParaHox and NK genes. In the genome of the demosponge Amphimedon queenslandica, no Hox or ParaHox genes are present, but NK genes are linked in a tight cluster similar to the NK clusters of bilaterians5. It has been proposed that Hox and ParaHox genes originated from NK cluster genes after divergence of sponges from the lineage leading to cnidarians and bilaterians5, 7. On the other hand, synteny analysis lends support to the notion that the absence of Hox and ParaHox genes in Amphimedon is a result of secondary loss (the ghost locus hypothesis)8. Here we analysed complete suites of ANTP-class homeoboxes in two calcareous sponges, Sycon ciliatum and Leucosolenia complicata. Our phylogenetic analyses demonstrate that these calcisponges possess orthologues of bilaterian NK genes (Hex, Hmx and Msx), a varying number of additional NK genes and one ParaHox gene, Cdx. Despite the generation of scaffolds spanning multiple genes, we find no evidence of clustering of Sycon NK genes. All Sycon ANTP-class genes are developmentally expressed, with patterns suggesting their involvement in cell type specification in embryos and adults, metamorphosis and body plan patterning. These results demonstrate that ParaHox genes predate the origin of sponges, thus confirming the ghost locus hypothesis8, and highlight the need to analyse the genomes of multiple sponge lineages to obtain a complete picture of the ancestral composition of the first animal genome.
Data from: Human-aided and natural dispersal drive gene flow across the range of an invasive mosquito
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Data from: Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls
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Data from: Linking the foraging behavior of three bee species to pollen dispersal and gene flow
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Data from: Dispersal and gene flow in the rare, parasitic Large Blue butterfly Maculinea arion
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Data from: Calcisponges have a ParaHox gene and dynamic expression of dispersed NK homeobox genes
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Transcriptional instability prevents dispersion of functional vomeronasal receptor genes
GEO Series GSE190613. Rattus norvegicus; Mus musculus. 815 samples. Type: Expression profiling by high throughput sequencing.
Transcriptional instability prevents dispersion of functional vomeronasal receptor genes [mouse]
GEO Series GSE190611. Mus musculus. 8 samples. Type: Expression profiling by high throughput sequencing.
Transcriptional instability prevents dispersion of functional vomeronasal receptor genes [scRNA-seq]
GEO Series GSE193024. Mus musculus. 800 samples. Type: Expression profiling by high throughput sequencing.
Transcriptional instability prevents dispersion of functional vomeronasal receptor genes [rat]
GEO Series GSE190612. Rattus norvegicus. 7 samples. Type: Expression profiling by high throughput sequencing.
Dispersal, flight metabolism and gene expression in the Glanville fritillary butterfly
GEO Series GSE47942. Melitaea cinxia. 170 samples. Type: Expression profiling by high throughput sequencing.
Effects of Disperse Yellow 7 in Silurana tropicalis Gene Network Analysis
GEO Series GSE40149. Xenopus tropicalis. 8 samples. Type: Expression profiling by array.
Gene expression shifts in yellow-bellied marmots prior to natal dispersal
GEO Series GSE113744. Marmota flaviventris. 43 samples. Type: Expression profiling by high throughput sequencing.
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.