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305 results for “Ecotypes”
A cline within an ecotype of the yellow monkeyflower, Mimulus guttatus
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Phenotypic plasticity versus ecotypic differentiation under recurrent summer drought in two drought-tolerant pine species
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Cold acclimation threshold induction temperatures of switchgrass ecotypes grown under a long and short photoperiod
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Ancestral sperm ecotypes reveal multiple invasions of a non-native fish in northern Europe
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EST-SSR genotyping data from: Ecotype variation in the endemic tree Callicarpa subpubescens on small oceanic islands: Genetic, phenotypic, and environmental insights
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The emergence of ecotypes in a parasitoid wasp: a case of incipient sympatric speciation in Hymenoptera?
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Among-individual diet variation within a lake trout ecotype: Lack of stability of niche use
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Data from: Genetic identification of lamprey genera and anadromous ecotypes in watersheds of the Northeastern Pacific Ocean
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Data from: Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes
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Phenology-dependent cold exposure and thermal performance of Ostrinia nubilalis ecotypes
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Patterns and repeatability of multi-ecotype assemblages of sympatric Salmonids
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Data from: Genetic architecture of repeated phenotypic divergence in Littorina saxatilis ecotype evolution
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Gulf coast canids: A wetland coyote ecotype shaped by red wolf introgression
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Data from: Ecotypic differences in drought coping ability in an endemic California oak
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Leaf-out in northern ecotypes of wide-ranging trees requires less spring warming, enhancing the risk of spring frost damage at cold range limits
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Data from: Genome divergence between European anchovy ecotypes fuelled by structural variants originating from trans-equatorial admixture
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Data for: Rapid evolution of recombination landscapes during the divergence of cichlid ecotypes in Lake Masoko
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Cardamine pratensis early/late ecotype transects Dibbinsdale Nature Reserve 2012-2014
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Data from: Riverscape genetics in brook lamprey: genetic diversity is less influenced by river fragmentation than by gene flow with the anadromous ecotype
<p><span><span>Understanding the effect of human induced landscape fragmentation on gene flow and evolutionary potential of wild populations has become a major concern. Here, we investigated the effect of riverscape fragmentation on patterns of genetic diversity in the freshwater resident </span><span><span>European </span></span><span>brook lamprey (</span><i><span><span>Lampetra planeri</span></span></i><span>) that has a low ability to pass obstacles to migration. We also tested the hypotheses of i) asymmetric gene flow following water current and ii) a </span><span><span>positive effect of</span></span><span> admixture with the closely related anadromous</span><span><span> river lamprey</span></span><span> (</span><i><span><span>L. fluviatilis</span></span></i><i><span><span>)</span></span></i><span> ecotype on </span><i><span><span>L. planeri</span></span></i><span> genetic diversity. We genotyped 2472 individuals, including 225 </span><i><span><span>L. fluviatilis</span></span></i><span>, sampled </span><span><span>from</span></span><span> 81 sites upstream and downstream barriers to migration, in 29 </span><span><span>western </span></span><span>European rivers. Linear modelling revealed a strong positive relationship between </span><span><span>genetic diversity and</span></span><span> the distance </span><span><span>from </span></span><span><span>the</span></span><span><span> river</span></span><span> source, consistent with expected patterns of decreased gene flow into upstream populations. However, the presence of anthropogenic barriers had a moderate effect on spatial genetic structure. Accordingly, we found evidence for downstream-directed gene flow, supporting the hypothesis that barriers do not limit dispersal </span><span><span>mediated by</span></span><span> water flow. Downstream </span><i><span><span>L. planeri </span></span></i><span>populations in sympatry with </span><i><span><span>L. fluviatilis </span></span></i><span>displayed consistently higher genetic diversity. We conclude that genetic drift and slight downstream gene flow drive the genetic </span><span><span>make-</span></span><span>up of upstream </span><i><span><span>L. planeri </span></span></i><span>populations</span><i><span> </span></i><span>whereas admixture between ecotypes maintains higher levels of genetic diversity in </span><i><span><span>L. planeri </span></span></i><span>populations</span><i><span> </span></i><span>sympatric</span><i><span> </span></i><span>with </span><i><span><span>L. fluviatilis</span></span></i><span>. We discuss the implications of these results for the design of conservation strategies of lamprey, and other freshwater organisms with several ecotypes, in fragmented dendritic river networks. </span></span></p>
Adaptive trait syndromes along multiple economic spectra define cold and warm adapted ecotypes in a widely distributed foundation tree species
<p>1. The coordination of traits from individual organs to whole plants is under strong selection because of environmental constraints on resource acquisition and use. However, the tight coordination of traits may provide underlying mechanisms of how locally adapted plant populations can become maladapted because of climate change. 2. To better understand local adaptation in intraspecific trait coordination, we studied trait variability in the widely distributed foundation tree species, Populus fremontii using a common garden near the mid-elevational point of this species distribution. We examined 28 traits encompassing four spectra: phenology, leaf economic spectrum (LES), whole-tree architecture (Corner's Rule), and wood economic spectrum (WES). 3. Based on adaptive syndrome theory, we hypothesized that trait expression would be coordinated among and within trait spectra, reflecting local adaptation to either exposure to freeze-thaw conditions in genotypes sourced from high-elevation populations or exposure to extreme thermal stress in genotypes sourced from low-elevation populations. 4. High-elevation genotypes expressed traits within the phenology and WES that limit frost exposure and tissue damage. Specifically, genotypes sourced from high elevations had later mean budburst, earlier mean budset, higher wood densities, higher bark fractions, and smaller xylem vessels than their low-elevation counterparts. Conversely, genotypes sourced from low elevations expressed traits within the LES that prioritized hydraulic efficiency and canopy thermal regulation to cope with extreme heat exposure, including 40% smaller leaf areas, 67% higher stomatal densities, and 34% higher mean theoretical maximum stomatal conductance. Low-elevation genotypes also expressed a lower stomatal control over leaf water potentials that subsequently dropped to pressures that could induce hydraulic failure. 5. Synthesis. Our results suggest that P. fremontii expresses a high degree of coordination across multiple trait spectra to adapt to local climate constraints on photosynthetic gas exchange, growth, and survival. These results, therefore, increase our mechanistic understanding of local adaptation and the potential effects of climate change that in turn, improves our capacity to identify genotypes that are best suited for future restoration efforts.</p>
ScienceDex guides
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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)
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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.