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43 results for “conditional strategy”
Data from: Proteomic evidence of a paedomorphic evolutionary process within a marine snail species: a strategy for adapting to extreme ecological conditions?
The exposed and sheltered ecotypes of the marine snail Littorina saxatilis from European rocky shores are considered a key model system to study adaptation and ecological speciation. Previous studies showed that two ecotypes (RB and SU) of this species in NW Spain have differently adapted to different shore levels and microhabitats. In order to understand how this divergent adaptive process has been accomplished, we followed a quantitative proteomic approach to investigate the proteome variation in a number of different biological factors, i.e. ecotype, ontogeny and their interactions. This approach allowed testing the hypothesis that one of the ecotypes has evolved by paedomorphosis, and also whether or not the molecular mechanisms related to ecotype differentiation are set up in early developmental stages. Additionally the identification of some candidate proteins by mass spectrometry provides some functional insights about these evolutionary processes. Results from this study provided evidence of higher ontogenetic differentiation at proteome level in the RB (metamorphic) than in SU (paedomorphic) ecotype that point to the possibility of juvenile stage retention in this latter ecotype. The level of protein expression (proteome) differences between ecotypes maintained nearly constant from late embryonic stages to adulthood, although some proteins involved in these changes considerably differed in embryonic compared to other ontogenetic stages. Paedomorphosis may be the evolutionary response of the SU ecotype of solving the trade-off during sexually immaturity that is caused by the evolution of small size arising from adaptation to the wave exposed habitat. Some potential candidate genes of adaptation related to energetic metabolism have been identified, providing a promising baseline for future functional analyses.
Data from: Behavioral diversity is maintained by a conditional strategy in a freshwater zooplankton
Many populations have intraspecific diversity in phenotype and ecological strategy, but the mechanisms maintaining such diversity are not fully understood. Multiple behaviors can be maintained either as a conditional strategy, where fitness depends on an individual's phenotype, or as a mixed strategy where alternative behaviors have similar fitness independent of phenotype. Using high-resolution depth and time sampling, we characterize two distinct diel vertical migration behaviors in a population of freshwater zooplankton (Daphnia pulicaria). Individuals in this population differ in their color phenotype and migratory behavior with red morphs upregulating hemoglobin and undergoing a deep migration, and pale morphs not producing hemoglobin and undergoing a shallow migration. We experimentally manipulated the behavior of each phenotype in the field, and measured population growth in their natural migration behavior as well as population growth in their alternative behaviors. Experimental populations of pale and red morphs under their natural migrations had roughly equal fitness, despite vast differences in environmental conditions. When forced to switch behaviors, pale morphs suffered reduced fitness, whereas red morphs had similar fitness compared to their natural migration. Our results suggest that while behavioral diversity may be promoted by the opportunity for alternative behaviors of equal fitness, the distinct physiological conditions required for survival in alternative behaviors limit the capacity for individual behavioral switching and likely maintain behavioral diversity as a conditional strategy.
Optimizing Cucumber Growth: Integrating Smart Irrigation with various Fertilization Strategies in Greenhouse Conditions
<div> <div>Supplemental materials for:</div> <div>"Optimizing Cucumber Growth: Integrating Smart Irrigation with various Fertilization Strategies in Greenhouse Conditions", under submission.</div> <br> <div>The 'datas.xlsx' file contains tables of raw data collected from the experiment site.</div> <div> </div> <div>Features:</div> <div> <ul> <li>Leaf Area</li> <li>Iwp</li> <li>Photosynthesis</li> <li>Yield</li> <li>Fruit Quality</li> <li>Summary</li> </ul> </div> </div>
10-day Decitabine, Fludarabine and 2 Gray TBI as Conditioning Strategy for Poor and Very Poor Risk AML in CR1
ClinicalTrials.gov study NCT02252107. IPD Sharing: Not stated. Countries: 2. Publications: 1.
Conditioning Based Intervention Strategies
ClinicalTrials.gov study NCT03380663. IPD Sharing: NO. Countries: 1. Publications: 2.
Data from: Investigating the genetic architecture of conditional strategies using the environmental threshold model
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Model output data for "Negative density-dependent dispersal emerges from the joint evolution of density- and body condition-dependent dispersal strategies"
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Data from: Condition-dependent foraging strategies in a coastal seabird: evidence that the rich get richer
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Data from: Proteomic evidence of a paedomorphic evolutionary process within a marine snail species: a strategy for adapting to extreme ecological conditions?
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Data from: Behavioral diversity is maintained by a conditional strategy in a freshwater zooplankton
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Data from: Strategies of Phytophtora infestans adaptation to local UV radiation conditions
Expected global changes in environmental conditions underline the need for a better understanding of genetic variation in ecological traits and their strategies of adaptation to the stresses. In this study, evolutionary mechanisms and processes of UV adaptation in plant pathogens were investigated by combining statistical genetics, physiological assays and common garden experiment approaches in an assessment of the potato late blight pathogen, Phytophthora infestans, sampled from various geographic locations in China. We found spatial divergence caused by diversifying selection in UV tolerance among P. infestans populations. Local UV radiation was the driving force of selection as indicated by a positive correlation between UV tolerance in P. infestans populations and the altitude of collection sites. Plasticity accounted for 68% of population variation while heritability was negligible, suggesting temporary changes in gene expression and/or enzymatic activity plays a more important role than permanent modification of gene structure in the evolution of UV adaptation. This adaptation strategy may explain the lack of fitness penalty observed in genotypes with higher UV tolerance.
Stopover use of a large estuarine wetland by dunlins during spring and autumn migrations: linking local refuelling conditions to migratory strategies
<p>1. Carbon and nitrogen stable isotope values measured in blood (plasma and red blood cells) and toenails of dunlins (<em>Calidris alpina</em>) captured at the Tagus estuary, Portugal, during spring and autumn migrations.</p> <p>2. Biometric and haematological parameters of dunlins (<em>Calidris alpina</em>) captured at the Tagus estuary, Portugal, during spring and autumn migrations.</p> <p>3. Biometric parameters and plasma metabolite concentrations of dunlins (<em>Calidris alpina</em>) captured at the Tagus estuary, Portugal, during spring and autumn migrations.</p>
Data from: Parasitism offers large rewards but carries high risks: predicting parasitic strategies under different life history conditions in lampreys
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Data from: Strategies of Phytophtora infestans adaptation to local UV radiation conditions
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Red2Flpe-SCON: A Versatile, Multicolor Strategy for Generating Mosaic Conditional Knockout Mice
GEO Series GSE266542. Mus musculus. 2 samples. Type: Expression profiling by high throughput sequencing.
Integrated multi-omic high-throughput strategies across-species identified potential key diagnostic, prognostic, and therapeutic targets for atherosclerosis under high glucose conditions
GEO Series GSE269426. Mus musculus. 16 samples. Type: Expression profiling by high throughput sequencing.
Data from: Assessing adaptive phenotypic plasticity by means of conditional strategies from empirical data: the Latent Environmental Threshold Model
Conditional strategies are the most common form of discrete phenotypic plasticity. In a conditional strategy, the phenotype expressed by an organism is determined by the difference between an environmental cue and a threshold, both of which may vary among individuals. The Environmental Threshold model (ETM) has been proposed as a mean to understand the evolution of conditional strategies, but has been surprisingly seldom applied to empirical studies. A hindrance for the application of the ETM is that often, the proximate cue triggering the phenotypic expression and the individual threshold are not measurable, and can only be assessed using a related observable cue. We describe a new statistical model that can be applied in this common situation. The Latent Environmental Threshold Model (LETM) allows for a measurement error in the phenotypic expression of the individual environmental cue and a purely genetically determined threshold. We show that coupling our model with quantitative genetic methods allows an evolutionary approach including an estimation of the heritability of conditional strategies. We evaluate the performance of the LETM with a simulation study and illustrate its utility by applying it to empirical data on the size-dependent smolting process for stream-dwelling Atlantic salmon juveniles.
Conditional Imaging Prescription Strategy for Exploration of Acute Uncomplicated Renal Colic
ClinicalTrials.gov study NCT02878148. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Improving Search Strategy for Identifying Urgent Conditions on the Chest X-ray
ClinicalTrials.gov study NCT01883570. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Data from: Assessing adaptive phenotypic plasticity by means of conditional strategies from empirical data: the Latent Environmental Threshold Model
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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.