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.
492
datasets available to search
ShareScore release 0.9.0
Dataset results
492 results for “Starvation”
Data from: Daily foraging patterns in free-living birds: exploring the predation-starvation trade-off
Daily patterns in the foraging behaviour of birds are assumed to balance the counteracting risks of predation and starvation. Predation risks are a function of the influence of weight on flight performance and foraging behaviours that may expose individuals to predators. Although recent research sheds light on daily patterns in weight gain, little data exist on daily foraging routines in free-living birds. In order to test the predictions of various hypotheses about daily patterns of foraging, we quantified the activity of four species of passerines in winter using radio frequency identification receivers built into supplemental feeding stations. From records of 472,368 feeder visits by tagged birds, we found that birds generally started to feed before sunrise and continued to forage at a steady to increasing rate throughout the day. Foraging in most species terminated well before sunset, suggesting their desired level of energy reserves was being reached before the end of the day. These results support the risk-spreading theorem over a long-standing hypothesis predicting bimodality in foraging behaviour purportedly driven by a tradeoff between the risks of starvation and predation. Given the increased energetic demands experienced by birds during colder weather, our results suggest that birds' perceptions of risk are biased towards starvation avoidance in winter.
Data from: Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change
Aardvarks (Orycteropus afer) are elusive burrowing mammals, predominantly nocturnal and distributed widely throughout Africa except for arid deserts. Their survival may be threatened by climate change via direct and indirect effects of increasing heat and aridity. To measure their current physiological plasticity, we implanted biologgers into six adult aardvarks resident in the semi-arid Kalahari. Following a particularly dry and hot summer, five of the study aardvarks and 11 other aardvarks at the study site died. Body temperature records revealed homeothermy (35.4–37.2°C) initially, but heterothermy increased progressively through the summer, with declining troughs in the nychthemeral rhythm of body temperature reaching as low as 25°C before death, likely due to starvation. Activity patterns shifted from the normal nocturnal to a diurnal mode. Our results do not bode well for the future of aardvarks facing climate change. Extirpation of aardvarks, which play a key role as ecosystem engineers, may disrupt stability of African ecosystems.
FIGURE 2 in When starvation challenges the tradition of niche conservatism: On a new species of the saxicolous genus Phymaturus from Patagonia Argentina with pseudoarboreal foraging behaviour (Iguania, Liolaemidae)
FIGURE 2. (a) Adult female paratype of Phymaturus agilis in life from Terra Typica, Río Negro, ventral view. Photo: F.O. Tappari, 11-10-2007. (b) Adult of Phymaturus agilis foraging and feeding on a Lycium gillesianum shrub. Photo: Cynthia González, 26-11-2006.
FIGURE 1 in When starvation challenges the tradition of niche conservatism: On a new species of the saxicolous genus Phymaturus from Patagonia Argentina with pseudoarboreal foraging behaviour (Iguania, Liolaemidae)
FIGURE 1. (a) Adult male holotype of Phymaturus agilis in life from Terra Typica, Río Negro, dorsal view. Photo: J.A. Scolaro, 10-03-2006. (b) Adult female paratype of Phymaturus agilis in life from Terra Typica, Río Negro, dorsal view. Photo: J.A. Scolaro, 10-03-2006.
Figure 1: Rubicon KO Starvation and Mitophagy HaloTag processing assay [FINAL]
Open the record for dataset details and reuse information.
Fluctuating starvation conditions modify host-symbiont relationship between a leaf beetle and its newly identified gregarine species
<p class="MsoNormal"><span>Gregarines are ubiquitous endosymbionts in invertebrates, including terrestrial insects. However, the biodiversity of gregarines is probably vastly underestimated and the knowledge about their role in shaping fitness-related traits of their host in dependence of fluctuating environmental conditions is limited. Using morphological and molecular analyses, we identified a new gregarine species, <em>Gregarina cochlearium</em> sp. n., in the mustard leaf beetle, <em>Phaedon cochleariae</em>. Applying a full-factorial design, we investigated the effects of a gregarine infection in combination with fluctuating starvation conditions during the larval stage on the development time and fitness-related traits of adult beetles. Under benign environmental conditions, the relationship between gregarines and the host seemed neutral, as host development, body mass, reproduction and survival were not altered by a gregarine infection. However, when additionally exposed to starvation, the combination of gregarine infection and this stress resulted in the lowest reproduction and survival of the host, which points to a parasitic relationship. Furthermore, when the host experienced starvation, the development time was prolonged and the adult females were lighter compared to non-starved individuals, independent of the presence of gregarines. Counting of gregarines in the guts of larvae revealed a lower gregarine load with increasing host body mass under stable food conditions, which indicates a regulation of the gregarine burden in dependence of the host condition. Contrary, in starved individuals the number of gregarines was the highest, hence the already weakened host suffered additionally from a higher gregarine burden. This interactive effect between gregarine infection and fluctuating starvation conditions led to an overall reduced fitness of <em>P. cochleariae</em>. Our study emphasises the need to study endosymbionts as important components of the natural environment and to investigate the role of host-symbiont relationships under fluctuating environmental conditions in an evolutionary and ecological context.</span></p>
SOC Fuel, Steam, and Air starvation monitoring using advanced tools
<p>Polarisation, impedance and THD data of fuel, steam, and air starvation of SOC with different sensitivity analyses</p>
Data from: Evolution of starvation resistance in an invasive insect species, Aethina tumida (Coleoptera: Nitidulidae)
<p>Starvation resistance, or the ability to survive periods without food, can shed light on selection pressure imposed by food scarcity, including chances to invade new regions as a result of human transport. Surprisingly little information is known about starvation resistance for invasive insect species. Given that native and invasive populations differ in starvation resistance, this would suggest different selection scenarios and adaptive shifts fostering invasion success. Here, we show striking differences in starvation resistance of adult small hive beetles Aethina tumida (SHB) between native and invasive populations. In the laboratory, starvation resistance of freshly-emerged laboratory-reared and field-collected adult females and males was evaluated in the beetle's native African range and in their invasive North American range. SHB in their native African range survived longer than SHB in their invasive North American range. Across ranges, females survived longer than males. Field-collected SHB survived in Africa longer than freshly-emerged ones, but not in the invasive range. This suggests no selection for starvation resistance in the invasive range, possibly due to differences between African and European-derived honey bee hosts facilitating a tradeoff scenario between reproduction and starvation resistance. The ability of adult females to survive up to two months without food appears to be one factor contributing to the invasion success of this species. Assuming food availability is usually high in the invasive ranges, and trade-offs between starvation resistance and fecundity/reproduction are common, it seems as if selection for starvation resistance during transport could set up potential trade-offs that enhance reproduction after invasion. It would be interesting to see if this is a possible general pattern for invasive insect species.</p>
Serum starvation affects mitochondrial metabolism of Adipose-derived Stem/stromal Cells
<p>Dataset of the scientific publication 'Serum starvation affects mitochondrial metabolism of Adipose-derived Stem/stromal Cells '</p>
Transcriptional profiling of the response to starvation and fattening reveals differential regulation of autophagy genes in mammals
<p>Nutrient deprivation (starvation) induced by fasting and hypercaloric regimens are stress factors that can influence cell and tissue homeostasis in mammals. One of the key cellular responses to changes in nutrient availability is the cell survival pathway, autophagy. While there has been much research into the protein networks regulating autophagy, less is known about the gene expression networks involved in this fundamental process. Here, we applied a network algorithm designed to analyze omics datasets, to identify sub-networks that are enriched for induced genes in response to starvation. This enabled us to identify two prominent active modules composed of key stress-induced transcription factors, including members of the Jun, Fos, and ATF families, and the other comprising autophagosome sub-network genes, including ULK1. The results were validated in the brain, liver, and muscle of fasting mice. Moreover, differential expression analysis of autophagy genes in the brain, liver, and muscle of high-fat diet-exposed mice, showed significant suppression of GABARAPL1 in the liver. Finally, our data provide a resource that may facilitate the future identification of regulators of autophagy.</p>
Implementation of Evidence-Based Treatment of Restrictive Eating Disorder With Pronounced Starvation
ClinicalTrials.gov study NCT04060433. IPD Sharing: NO. Countries: 1. Publications: 1.
Transcriptional profiling of the response to starvation and fattening reveals differential regulation of autophagy genes in mammals
Open the record for dataset details and reuse information.
Data from: Timing of starvation determines its effects on susceptibility to bacterial infection in female fruit flies independent of host evolutionary history
Open the record for dataset details and reuse information.
Data from: Evolution of starvation resistance in an invasive insect species, Aethina tumida (Coleoptera: Nitidulidae)
Open the record for dataset details and reuse information.
Data from: Initial hydraulic failure followed by late-stage carbon starvation leads to drought-induced death in tree, Trema orientalis
Open the record for dataset details and reuse information.
Data from: Starvation causes female to male sex reversal through lipid metabolism in the teleost fish, medaka (Oryzias latipes)
Open the record for dataset details and reuse information.
Fluctuating starvation conditions modify host-symbiont relationship between a leaf beetle and its newly identified gregarine species
Open the record for dataset details and reuse information.
Data from: Daily foraging patterns in free-living birds: exploring the predation-starvation trade-off
Open the record for dataset details and reuse information.
Data from: Drought-induced starvation of aardvarks in the Kalahari: an indirect effect of climate change
Open the record for dataset details and reuse information.
Data from: Nutrient starvation impairs the trophic plasticity of reef-building corals under ocean warming
1) Global warming of the world's oceans is driving reef-building corals towards their upper thermal limit, inducing bleaching, nutrient starvation and mortality. In addition, corals are predicted to experience large fluctuations in seawater nutrient concentrations, following water column stratification or eutrophication problems, which can further alter their nutritional capacities and ultimately their resilience to global change. 2) We investigated the effect of thermal stress and dissolved inorganic nutrient (DINUT) availability on the auto- and heterotrophic nutritional capacities of corals. In particular, we assessed the effect of nitrogen enrichment or DINUT depletion (both in nitrogen and phosphorus) on the assimilation of heterotrophic nutrients as well as on the heat-stress tolerance of the reef-building coral Stylophora pistillata. 3) Here, we show that DINUT depletion enhanced coral bleaching under thermal stress and more importantly, significantly impaired rates of heterotrophic nutrient assimilation, inducing coral starvation. In contrast, corals grown under nitrogen enrichment maintained high rates of heterotrophic nutrient assimilation and avoided bleaching, although nutrient uptake rates were lowered. We therefore observed a positive coupling between auto-and heterotrophy within the coral-dinoflagellate symbiosis, indicating that heterotrophic processes require a minimum of autotrophically-acquired nutrients to be functional. 4) These findings show that the trophic plasticity of corals directly depends on the availability of dissolved inorganic nutrients in seawater. The lack of a shift toward greater heterotrophy under DINUT depletion may lead to substantial modifications of the role that feeding plays in the response of reef-building corals to climate change.
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.