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499 results for “Phenotypic plasticity”
Spring temperature drives phenotypic selection on plasticity of flowering time
<p class="western">In seasonal environments, a high responsiveness of development to increasing temperatures in spring can infer benefits in terms of a longer growing season, but also costs in terms of an increased risk of facing unfavourable weather conditions. Still, we know little about how climatic conditions influence the optimal plastic response. Using 22 years of field observations for the perennial forest herb <em>Lathyrus vernus</em>, we assessed phenotypic selection on among-individual variation in reaction norms of flowering time to spring temperature, and examined if among-year variation in selection on plasticity was associated with spring temperature conditions. We found significant among-individual variation in mean flowering time and flowering time plasticity, and that plants that flowered earlier also had a more plastic flowering time. Selection favoured individuals with an earlier mean flowering time and a lower thermal plasticity of flowering time. Less plastic individuals were more strongly favoured in colder springs, indicating that spring temperature influenced optimal flowering time plasticity. Our results show how selection on plasticity can be linked to climatic conditions, and illustrate how we can understand and predict evolutionary responses of organisms to changing environmental conditions.<span><span> </span></span></p>
Data from: Phenotypic plasticity and genetic diversity shed light on endemism of rare Boechera perstellata and its potential vulnerability to climate warming
<p>Premise of the study: The rapid pace of contemporary environmental change puts many species at risk, especially rare species constrained by limited capacity to adapt or migrate due to low genetic diversity and/or fitness. But the ability to acclimate can provide another way to persist through change. We compared the capacity of rare <em>Boechera perstellata</em> (Braun's rockcress) and widespread <em>B. laevigata</em> to acclimate to change.</p> <p>Methods: We investigated the phenotypic plasticity of growth, biomass allocation, and leaf morphology of individuals of <em>B. perstellata</em> and <em>B. laevigata</em> propagated from seed collected from several populations throughout their ranges in a growth chamber experiment to assess their capacity to acclimate. Concurrently, we assessed the genetic diversity of sampled populations using 17 microsatellite loci to assess evolutionary potential.</p> <p>Key results: Plasticity was limited in both rare <em>B. perstellata</em> and widespread <em>B. laevigata</em>, but differences in the plasticity of root traits between species suggest that <em>B. perstellata</em> may have less capacity to acclimate to change. In contrast to its widespread congener, <em>B. perstellata</em> exhibited no plasticity in response to temperature and weaker plastic responses to water availability. As expected, <em>B. perstellata</em> also had lower levels of observed heterozygosity than <em>B. laevigata</em> at the species level, but population-level trends in diversity measures were inconsistent due to high heterogeneity among <em>B. laevigata</em> populations.</p> <p>Conclusions: Overall, the ability of phenotypic plasticity to broadly explain the rarity of <em>B. perstellata</em> vs. commonness of <em>B. laevigata </em>is limited. However, some contextual aspects of our plasticity findings compared with its relatively low genetic variability may shed light on the narrow range and habitat associations of <em>B. perstellata</em> and suggest its vulnerability to climate warming due to acclimatory and evolutionary constraints.</p>
Data and R scripts associated with Clark, Moles, Fazlioglu, Brandenburger & Hartley, "Rapid loss of phenotypic plasticity in the introduced range of the beach daisy, Arctotheca populifolia."
<p>Data to accompany article accepted for publication in Journal of Ecology.</p> <p><strong>"Rapid loss of phenotypic plasticity in the introduced range of the beach daisy, <em>Arctotheca populifolia"</em></strong></p> <p>By Charlie D. Clark, Angela T. Moles, Fatih Fazlioglu, Claire R. Brandenburger, & Stephen Hartley</p> <p>1 zip file that contains the following:</p> <p> 2 datasets (xlsx format)</p> <p> 9 R scripts to run the analyses and produce figures</p>
Data from: Testing the evolutionary potential of an alpine plant: Phenotypic plasticity in response to growth temperature outweighs parental environmental effects and other genetic causes of variation
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Phenotypic plasticity in mass loss during chick-rearing in the European starling (Sturnus vulgaris)
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Data for: Associations between leaf developmental stability, canalization and phenotypic plasticity in an architectural perspective
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Data from: Dissecting factors behind temporal trends in the timing of breeding in two songbird species – evolutionary change or phenotypic plasticity?
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Phenotypic plasticity and genetic diversity in a polyploid Arabidopsis complex
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Data from: Is phenotypic plasticity use-it-or-lose-it? Exploring genetic assimilation of salinity-plastic traits across threespine stickleback (<em>Gasterosteus aculeatus</em>) populations
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Anticipatory plasticity: frog embryos respond to environmental cues by producing an adaptive phenotype at hatching
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Spring temperature drives phenotypic selection on plasticity of flowering time
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Data from: Phenotypic plasticity and genetic diversity shed light on endemism of rare Boechera perstellata and its potential vulnerability to climate warming
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Data from: A test for microbiome-mediated rescue via host phenotypic plasticity in Daphnia
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Thermal phenotypic plasticity of pre- and post-copulatory male harm buffers sexual conflict in wild Drosophila melanogaster
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Data from: Temporal dynamics of selection on early-life phenotypic plasticity in seasonal migration versus residence
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Simulation code for: The role of phenotypic plasticity in the establishment of range margins
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Data for Phenotypically plastic responses to freshwater salinization in larval amphibians: Induced tolerance and induced sensitivity
These data support a paper published by Relyea et al. in 2023 in the journal Environmental Pollution. In this manuscript titled 'Phenotypically plastic responses to freshwater salinization in larval amphibians: induced tolerance and induced sensitivity' the authors use a lab experiment to examine the effects of low levels of exposure to road salt pollution on amphibian responses to higher subsequent doses of the contaminant.
Fine-tuned phenotypes: Tadpole plasticity under 16 combinations of predators and competitors.
It is now well appreciated that most organisms can alter their phenotypes when faced with environmental variation. Decades of empirical investigations have documented hundreds of examples of phenotypic plasticity, yet most studies have focused on the presence or absence of a single environmental factor. As a result, we know little about how organisms respond to gradients of environmental factors (i.e., threshold responses vs. continuous responses), nor do we understand how organisms respond to combinations of environmental variables. I examined how larval wood frogs (Rana sylvatica) altered their behavior, morphology, and growth in response to combined gradients of predation and competition. Increased predation risk induced lower activity, deeper tails, and shorter bodies, which collectively caused slower growth. Increased competition caused slower growth which induced higher activity, shallower tails, and longer bodies. For both environmental gradients, the responses were frequently continuous rather than threshold responses. Moreover, predation and competition had interactive effects. Responses to predators were always larger under low competition than under high competition. Responses to competition were larger under low predation risk when predation and competition induced traits in the same direction, but larger under high predation risk when predation and competition induced traits in opposite directions. The results demonstrate that responses to phenotypically plastic traits can be fine-tuned to a wide variety of environmental combinations.
Data from: An experimental investigation of how intraspecific competition and phenotypic plasticity can promote the evolution of novel, complex phenotypes
<p>Intraspecific competition has long been considered a key driver of evolutionary diversification, but whether it can also promote evolutionary innovation is less clear. We examined the interplay between competition and phenotypic plasticity in fueling the origins of a novel, complex phenotype––a distinctive carnivore morph found in spadefoot toad tadpoles (genus <i>Spea</i>) that specializes on fairy shrimp. We specifically sought to explore the possible origins of this phenotype by providing shrimp to <i>Scaphiopus holbrookii</i> tadpoles (the sister genus to <i>Spea </i>that does not produce carnivores) while subjecting them to competition for their standard diet of detritus. Previous research had shown that this species will eat shrimp when detritus is limited, and that these shrimp-fed individuals produce features that are redolent of a rudimentary <i>Spea </i>carnivore. In this study, we found that: 1) behavioral and morphological plasticity enabled some individuals to expand their diet to include shrimp; 2) there was heritable variation in this plasticity; and 3) individuals received a growth and development benefit by eating shrimp. Thus, novel resource use can arise via plasticity as an adaptive response to intraspecific competition. More generally, our results show how competition and plasticity may interact to pave the way for the evolution of complex, novel phenotypes, such as the distinctive carnivore morph in present-day <i>Spea</i>.</p>
Data From: Evaluating the correlation between genome-wide diversity and the release of plastic phenotypic variation in experimental translocations to novel natural environments
<p>Phenotypic reaction norms are often shaped and constrained by selection and are important for allowing organisms to respond to environmental change. However, selection cannot constrain reaction norms for environmental conditions that populations have not experienced. This may allow cryptic neutral genetic variation for the reaction norm to accumulate such that a release of phenotypic variation occurs when it is exposed to novel conditions. Most genomic diversity behaves as if functionally neutral. Genome-wide diversity metrics may therefore correlate with levels of cryptic genetic variation and, as a result, could exhibit a positive relationship with a release of phenotypic variation in novel environments. To test this hypothesis, we conducted translocations of juvenile brook trout (Salvelinus fontinalis) from 12 populations to novel uninhabited ponds that represented a gradient of environmental conditions. We assessed reaction norms for morphological traits (body size and four morphometric relative warps) across pond environmental gradients and evaluated the effect of genome-wide heterozygosity on phenotypic variability. All traits displayed plastic reaction norms. Overall, we found some evidence that a release of phenotypic variation consistent with cryptic genetic variation can occur in novel environmental conditions. However, the extent to which this release was correlated with average genome-wide diversity was limited to only one of five morphological traits examined. Our results suggest that the link between genomic diversity and the accumulation of cryptic genetic variation in reaction norms may be limited. Similarly, reaction norms were constrained for many of the morphological traits examined. Past conditions may have constrained reaction norms in the putatively novel environments despite significant deviations from contemporary source population habitat. Additionally, as a generalist colonizing species brook trout may exhibit plastic phenotypes across a wide range of environmental conditions.</p>
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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)
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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.