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145 results for “life history variation”
Selfing rate variation within species is unrelated to life-history traits or geographic range position
<p>Premise: In plants, populations and species vary widely along the continuum from outcrossing to selfing. Life-history traits and ecological circumstances influence among-species variation in selfing rates but their general role in explaining intraspecific variation is unknown. Using a database of plant species, we test whether life-history traits, geographic range position, or abundance predict selfing rate variation among populations. </p> <p>Methods: We identified species where selfing rates were estimated in at least three populations at known locations. Two key life-history traits (generation time and growth form) were used to predict within-species selfing rate variation. Populations sampled within a species' native range were assessed for proximity to the nearest edge and abundance. Finally, we conducted linear and segmented regressions to determine functional relationships between selfing rate and geographic range position within species.</p> <p>Key results: While woody species exhibit lower variation in selfing rates compared to herbs, this is explained by the lower average selfing rate of woody species. Relationships between selfing and peripherality or abundance significantly varied among species in their direction and magnitude. However, there was no general pattern of increased selfing towards range edges. A power analysis shows that tests of this hypothesis require studying many (i.e. 40+) populations.</p> <p>Conclusions: Intraspecific variation in plant mating systems is often substantial yet remains difficult to explain. Beyond sampling more populations, future tests of biogeographic hypotheses will benefit from phylogeographic information concerning specific range edges, the study of traits influencing mating system (e.g. herkogamy), and measures of abundance at local scales (e.g. population density).</p>
Data from: Interacting effects of genetic variation for seed dormancy and flowering time on phenology, life history, and fitness of experimental Arabidopsis thaliana populations over multiple generations in the field
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Data from: Evolutionary variation in gene conversion at the avian MHC is explained by fluctuating selection, gene copy numbers, and life history
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Data from: Phenotypically plastic responses to environmental variation are more complex than life history theory predicts
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Data from: Among-species variation in six decades of changing migration timings explained through ecology, life-history and abundance
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Selfing rate variation within species is unrelated to life-history traits or geographic range position
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Maternally-transferred thyroid hormones and life-history variation in birds
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Data from: Causes and consequences of individual variation: Linking state-dependent life histories to population performance
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Data from: Broodmate aggression and life history variation in accipitrid birds of prey
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Variation and plasticity in life-history traits and fitness of wild Arabidopsis thaliana populations are not related to their genotypic and ecological diversity
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Data from: Life history variation in an invasive plant is associated with climate and recent colonization of a specialist herbivore
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Data from: Breeding season length and nest mortality drive cryptic life history variation in Dark-eyed Juncos (Junco hyemalis) breeding across a montane elevation gradient
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Data from: Vertically inherited microbiota and environment modifying behaviors conceal genetic variation in dung beetle life history
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Ontogenetic variation in the marine foraging of Atlantic salmon functionally links genomic diversity with a major life history polymorphism
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Data from: Apparent annual survival estimates of tropical songbirds better reflect life history variation when based on intensive field methods
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Data from: Cis-regulatory differences in isoform expression associate with life history strategy variation in Atlantic salmon
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Developmental life history is associated with variation in rates of climatic niche evolution in a salamander adaptive radiation
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Data from: Genomic differentiation during speciation-with-gene-flow: comparing geographic and host-related variation in divergent life history adaptation in Rhagoletis pomonella
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Chipmunk body mass variations and life-histories in a pulsed resource ecosystem
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Data for: A complex mechanism translating variation of a simple genetic architecture into alternative life histories
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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.
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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.