Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
157
datasets available to search
ShareScore release 0.7.1
Dataset results
157 results for “Environmental stress”
Data from: Sex-specific selection under environmental stress in seed beetles
Sexual selection can increase rates of adaptation by imposing stronger selection in males, thereby allowing efficient purging of the mutation load on population fitness at a low demographic cost. Indeed, sexual selection tends to be male-biased throughout the animal kingdom, but little empirical work has explored the ecological sensitivity of this sex difference. In this study, we generated theoretical predictions of sex-specific strengths of selection, environmental sensitivities and genotype-by-environment interactions, and tested them in seed beetles by manipulating either larval host plant or rearing temperature. Using fourteen isofemale lines, we measured sex-specific reductions in fitness components, genotype-by-environment interactions, and strength of selection (variance in fitness) in the juvenile and adult stage. As predicted, variance in fitness increased with stress, was consistently greater in males than females for adult reproductive success (implying strong sexual selection), but was similar in the sexes in terms of juvenile survival across all stress-levels. While genetic variance in fitness increased in magnitude under severe stress, heritability decreased, and particularly so in males. Moreover, genotype-by-environment interactions for fitness were common but specific to the type of stress and each sex and life stage, suggesting that new environments may change the relative alignment and strength of selection in males and females. Our study thus exemplifies how environmental stress can influence the relative forces of natural and sexual selection, as well as concomitant changes in genetic variance in fitness, which are predicted to have consequences for rates of adaptation in sexual populations.
Long term environmental stability drives reduced stress tolerance in salt lake invertebrates
<p>The capacity of species to tolerate physical stressors is critical in a world of increasing environmental instability, however, past selective environments should dramatically impact on future stress tolerance, particularly in isolated populations. Through stabilising selection, long-term environmental stasis may reduce physiological tolerance, creating an evolutionary legacy where populations are less fit if environments change. Few empirical studies have investigated this evolutionary legacy of past selection, and of particular interest whether stabilising selection in a benign environment reduces stress tolerance in natural systems. Here we use multiple populations of salt-lake invertebrates (<i>Coxiella striata, Austrochiltonia subtenuis</i>) with either stable or fluctuating environmental histories to investigate the relationship between stabilising selection and environmental stress resistance. Tolerance to both salinity and temperature stress were examined in invertebrate populations from lakes with long-term (decadal) stable environments and compared with populations from lakes with extreme salinity variations. Individuals from stable environments demonstrated significantly lower survival under both increasing salinity and temperature stresses when compared with environmentally unstable populations. Our results support the hypothesis that the evolutionary legacy from stabilising selection in constant environments leads to reduced stress tolerance. This finding demonstrates that under an increasingly variable climate, the evolutionary legacies of populations will be critical for future survival and adaptation.</p>
Habitat-complexity regulates the intensity of facilitation along an environmental stress gradient
<p>Positive interactions between foundation species and their associated species are expected to be influenced by the degree of environmental stress as well as trait variations of the species involved. However, there is scarce empirical evidence regarding how these two factors interact and shape the intensity of facilitation. To test how facilitation varies with stress, a colonization experiment using artificial algal units that varied in a functional trait (morphological complexity) was conducted at different intertidal height levels. The isolated effects of shore-height and host-complexity are as expected: the number of species and overall abundance of epifauna decreased with lower complexity host units and greater exposure to environmental stress. However, in contrast to the initially proposed model, based on the Stress Gradient Hypothesis, the magnitude of positive interactions increased at lower tidal heights (those levels with, presumably, milder environmental conditions). An additional predation exclusion experiment ruled out the effects of predation pressure as a major factor driving the structure of mobile epifaunal assemblages in these intertidal habitats. Thus, further studies are needed to identify the factors that explain the patterns of facilitation intensity found in the present study.</p>
Data from: Use of a microfluidic platform to uncover basic features of energy and environmental stress responses in individual cells of Bacillus subtilis
Bacteria use a variety of stress-sensing systems to sense and respond to diverse stressors and to ensure their survival under adverse conditions. The gram-positive bacterium Bacillus subtilis responds to energy stress (ATP depletion) and to environmental stressors using two distinct stress-sensing pathways that converge on the alternative sigma factor σB to provoke a general stress response. Past efforts to study the σB stress response in bulk culture and on agarose pads were unable to visualize the responses of individual cells under tightly controlled conditions for extended periods of time. Here we use a microfluidics-based strategy to discern the basic features of σB activation in single cells in response to energy and environmental stress, both immediately upon stressor exposure and for tens of generations thereafter. Upon energy stress at various levels of stressor, cells exhibited fast, transient, and amplitude-modulated responses but not frequency modulation as previously reported. Upon environmental stress, which is mediated by the stressosome complex, wild-type cells primarily exhibited a transient and amplitude-modulated response. However, mutant cells producing only one of the four paralogous RsbR stressosome proteins showed striking and previously unseen differences. Whereas RsbRA-only cells mimicked the wild type, RsbRC-only cells displayed a slower but sustained overall response composed of repeated activation events in single cells.
Environmental conditions and vehicle disturbance influence stress behaviours in a working Harris's hawk (Parabuteo unicinctus)
<p>Data set - Environmental conditions and vehicle disturbance influence stress behaviours in a working Harris’s hawk (<em>Parabuteo unicinctus</em>)</p>
Effect of a Nurse-Led Environmental Stressor Reduction Package on Perceived Stress and Sleep Quality in Intensive Care Unit Patients
ClinicalTrials.gov study NCT07309406. IPD Sharing: YES. Countries: 1. Publications: 0.
Data from: Inbreeding depression increases with environmental stress: an experimental study and meta-analysis
Open the record for dataset details and reuse information.
Data from: Sex-specific selection under environmental stress in seed beetles
Open the record for dataset details and reuse information.
Data from: A dynamic model of facilitation on environmental stress gradients
Open the record for dataset details and reuse information.
Data from: Environmental stress increases selection against and dominance of deleterious mutations in inbred families of the Pacific oyster Crassostrea gigas
Open the record for dataset details and reuse information.
Data from: Environmental stress correlates with increases in both genetic and residual variances: a meta-analysis of animal studies
Open the record for dataset details and reuse information.
Data from: One stimulus - two responses: host and parasite life history variation in response to environmental stress
Open the record for dataset details and reuse information.
Data from: Selection history and epistatic interactions impact dynamics of adaptation to novel environmental stresses
Open the record for dataset details and reuse information.
Data from: Environmental stress does not increase the mean strength of selection
Open the record for dataset details and reuse information.
Data from: Environmental stress increases the magnitude of nonadditive genetic variation in offspring fitness in the frog Crinia georgiana
Open the record for dataset details and reuse information.
Data from: Few genetic and environmental correlations between life history and stress resistance traits affect adaptation to fluctuating thermal regimes
Open the record for dataset details and reuse information.
Data from: Intralocus sexual conflict and environmental stress
Open the record for dataset details and reuse information.
Long term environmental stability drives reduced stress tolerance in salt lake invertebrates
Open the record for dataset details and reuse information.
Habitat-complexity regulates the intensity of facilitation along an environmental stress gradient
Open the record for dataset details and reuse information.
Data from: Use of a microfluidic platform to uncover basic features of energy and environmental stress responses in individual cells of Bacillus subtilis
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
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)
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.