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3,139
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3,139 results for “fitting”
Interactive effects of immediate and ancestral salt stress on fitness in duckweed
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Main model fits and substitution rate predictions for: A quantitative genetic model of background selection in humans
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Data for: Considerations for fitting occupancy models to data from eBird and similar volunteer-collected data
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Complex models of sequence evolution improve fit, but not gene tree discordance, for tetrapod mitogenomes
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Data from: Females with attractive mates gain environmental benefits that increase lifetime and multi-generational fitness
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Data from: Pleiotropy alleviates the fitness costs associated with resource allocation trade-offs in immune signaling networks
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Data and code for: Transgenerational pathogen effects: Maternal pathogen exposure reduces offspring fitness
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Data from: Predicting fitness in future climate: Insights from temporally replicated field experiments in Arabidopsis thaliana
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Fitness benefits of alternated chick provisioning in cooperatively breeding carrion crows
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Phenotypic homogenization and potential fitness constraints following non-native introgression in an endemic sportfish
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Reduced fitness associated with introgression within the Western Mediterranean admixed population of European seabass
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Chronogram or phylogram for ancestral state estimation? Model-fit statistics indicate the branch lengths underlying a binary character’s evolution: R scripts and simulated trees
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Detecting frequency-dependent selection through the effects of genotype similarity on fitness components
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Foraging strategies and lifetime fitness in northern elephant seals
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Best fit parameters describing net CO2 flux light response curves measured during the ITEX CO2 flux survey 2003-2009.
Ecosystem CO2 flux light response curves were measured on 1m x 1m plots ( some 0.3m x 0.3m plots in 2006 and some 0.7m x0.7m plots in 2009) across the arctic. This file contains the best fit parameters that describe these light response curves, together with corresponding NDVI data for each curve. Survey plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; at various sites in Adventdalen, Svalbard; in the Zackenberg valley, Northeast Greenland; at BEO near Barrow, Alaska and at the Anaktuvuk River Burn in Alaska. Measurements were made during the growing seasons 2003 to 2009.
Standardized on-road tests assessing fitness-to-drive in people with cognitive impairments: a systematic review
<p>Data repository for a systematic review concerning on-road tests. Are included the following data :</p> <ul> <li>items and scoring system</li> <li>risk of bias assessment</li> <li>summary of findings</li> <li>the complete search strategy</li> </ul>
Data from: Dunnock social status correlates with sperm speed, but fast sperm does not always equal high fitness
<p>Sperm competition theory predicts that males should modulate sperm investment according to their social status. Sperm speed, one proxy of sperm quality, also influences the outcome of sperm competition because fast sperm cells may fertilize eggs before slow sperm cells. We evaluated whether the social status of males predicted their sperm speed in a wild population of dunnocks (<em>Prunella modularis</em>). In addition to the traditional analysis of the average speed of sperm cells per sample, we also analyzed subsamples of the fastest sperm cells per sample. In other words, we systematically evaluated the effects of including different numbers of the fastest sperm in our analyses, ranging from the 5-fastest sperm cells to the 100-fastest sperm cells in a sample. We further evaluated whether fitness, defined here as the number of chicks sired per male per breeding season, relates to the sperm speed in the same population. We found that males in monogamous pairings (i.e. low levels of sperm competition), produced the slowest sperm cells whereas subordinate males in polyandrous male-male coalitions, (i.e. high levels of sperm competition), produced the fastest sperm cells. This result was consistent regardless of the number of fastest sperm included in our analyses, but statistical support was conditional on the number of sperm cells included in the analysis. Interestingly, we found no significant relationship between fitness and sperm speed, which suggests that it is possible that the differential mating opportunities across social status leveled out any possible difference. Our study also suggests that it is important to identify biologically meaningful subsets of fastest sperm and cutoffs for inclusions for assessing sperm competition via sperm speed</p>
Fitness measures of maternal transplants (seed fitness) and of the F1 generation (rosette diameter) of three translocated populations of Arnica montana in southern Belgium
<p>Fitness data measured in the framework of a genetic monitoring of translocated populations of the critically endangered Arnica montana. See Van Rossum et al. (2020) in Molecular Ecology for more details.</p>
Data from: Evolutionary trade-offs of insecticide resistance – the fitness costs associated with target-site mutations in the nAChR of Drosophila melanogaster
<p>The evolution of resistance to drugs and pesticides poses a major threat to human health and food security. Neonicotinoids are highly effective insecticides used to control agricultural pests. They target the insect nicotinic acetylcholine receptor and mutations of the receptor that confer resistance have been slow to develop, with only one field-evolved mutation being reported to date. This is an arginine to threonine substitution at position 81 of the nAChR_β1 subunit in neonicotinoid resistant aphids. To validate the role of R81T in neonicotinoid resistance and to test whether it may confer any significant fitness costs to insects, CRISPR/Cas9 was used to introduce an analogous mutation in the genome of <i>Drosophila melanogaster</i>. Flies carrying R81T showed an increased tolerance (resistance) to neonicotinoid insecticides, accompanied by a significant reduction in fitness. In comparison, flies carrying a deletion of the whole nAChR_α<em>6</em> subunit, the target-site of spinosyns, showed an increased tolerance to this class of insecticides but presented almost no fitness deficits.</p>
Experimental infection of bumble bees with honey bee associated viruses: no direct fitness costs but potential future threats to novel wild bee hosts
<p>Pathogen spill-over represents an important cause of biodiversity decline. For wild bee species such as bumble bees, many of which are in decline, correlational data point toward viral spill-over from naged honey bees as a potential cause. Yet impacts of honey bee viruses on wild bees are rarely evaluated. Here, in a series of highly controlled laboratory infection assays with well characterised viral inocula, we show that three viral types isolated from honey bees (<i>Deformed wing virus</i> genotype A, <i>Deformed wing virus</i> genotype B and <i>Black queen cell virus</i>) readily replicate within hosts of the bumble bee <i>Bombus terrestris</i>. Impacts of these honey bee-derived viruses – either injected or fed – on the mortality of <i>B. terrestris </i>workers were, however, negligible and likely dependent on host condition. Our results highlight the potential threat of viral spill-over from honey bees to novel wild bee species, though they also underscore the importance of additional studies on this and other non- bee species under field-realistic conditions to evaluate whether pathogen spill-over has a negative impact on wild bee individuals and population fitness.</p>
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.