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10 results for “non-additive effects”
Non-additive effects on the morphology of hybrids between two species of two large house spiders, Eratigena saeva and E. duellica (Araneae: Agelenidae)
<p>Raw morphological measurements of males and females of two species of large house spider and their F<sub>1</sub>, F<sub>2</sub> and backcross hybrids.</p>
Using inbreeding to test the contribution of non-additive genetic effects to additive genetic variance: A case study in Drosophila serrata
<p>Additive genetic variance, <em>V<sub>A</sub></em>, is the key parameter for predicting adaptive and neutral phenotypic evolution. Changes in demography (e.g., increased close-relative inbreeding) can alter <em>V<sub>A</sub></em>, but how depends on the, typically unknown, gene action and allele frequencies across many loci. For example, <em>V<sub>A</sub></em> increases proportionally with the inbreeding coefficient when allelic effects are additive, but larger (or smaller) increases can occur when allele frequencies are unequal at causal loci with dominance effects. Here, we describe an experimental approach to assess the potential for rare, recessive alleles to inflate <em>V<sub>A</sub></em> under inbreeding. Applying a powerful paired pedigree design in <em>Drosophila serrata</em>, we measured 11 wing traits on half-sibling families bred via either random or sibling mating, differing only in homozygosity (not allele frequency). Despite close inbreeding and substantial power to detect small <em>V<sub>A</sub></em>, we detected no deviation from the expected additive effect of inbreeding on genetic (co)variances. Our results suggest the average dominance coefficient is very small relative to the additive effect, or that allele frequencies are relatively equal at loci affecting wing traits. We outline the further opportunities for this paired pedigree approach to reveal the characteristics of <em>V<sub>A</sub></em>, providing insight into historical selection and future evolutionary potential.</p>
Non-additive genetic effects induce novel phenotypic distributions in male mating traits of F1 hybrids
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Using inbreeding to test the contribution of non-additive genetic effects to additive genetic variance: A case study in Drosophila serrata
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Data from: Non-additive effects of intra- and interspecific competition between two larval salamanders
1) Assessment of the relative strengths of intra- and interspecific competition has increased in recent years, and is critical to understanding the importance of competition. Yet, whether intra- and interspecific competition can have non-additive effects has rarely been tested. The resulting fitness consequences of such non-additive interactions are important to provide the context necessary to advance our understanding of competition theory. 2) We compared the strength of additive and non-additive intra- and interspecific competition by manipulating densities of a pair of larval salamanders (Ambystoma talpoideum and A. maculatum) in experimental mesocosms within a response surface design. 3) Intraspecific density had the strongest effect on the strength of competition for both species, and few observed comparisons indicated interspecific competition was an important factor in predicting body size, growth or larval period length of either species. 4) Non-additive effects of intra- and interspecific competition influenced some response variables, including size and mass at metamorphosis in A. maculatum, but at a reduced strength compared to intraspecific effects alone. 5) Intraspecific competition was thus the dominant biotic interaction, but non-additive effects also impact the outcome of competition in these species, validating the importance of testing for and incorporating non-additive density effects into competition models.
Data from: Individual and non-additive effects of exotic sap-feeders on root functional and mycorrhizal traits of a shared conifer host
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Data from: Neighborhood-scale analyses of non-additive species effects on cation concentrations in forest soils
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Data from: Modeling additive and non-additive effects in a hybrid population using genome-wide genotyping: prediction accuracy implications
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Data from: Non-additive effects of intra- and interspecific competition between two larval salamanders
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Genomic prediction with non-additive effects in beef cattle: Stability of variance component and genetic effect estimates against population size
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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.