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.
700
datasets available to search
ShareScore release 0.9.0
Dataset results
700 results for “life stage”
Monitoring O. mykiss Life Stages on the Stanislaus River 2021-2025
This study is designed to partly address steelhead conservation measures outlined in the U.S. Bureau of Reclamation's Proposed Action for the Long-Term Operation of the CVP. This effort is funded under the Central Valley Project Improvement Act (CVPIA) authority Provision 3046 (g)(4), which states the primary purpose of this effort shall be to support the Secretary's efforts in fulfilling the requirements of this title through improved scientific understanding concerning, but not limited to, measures needed to restore anadromous fisheries to optimum and sustainable levels in accordance with the restored carrying capacities of Central Valley rivers, streams, and riparian habitats. Conceptual and quantitative work described in this report encompass multiple O. mykiss life-stages and transitions among life stages. The geographic scope of the report includes the Lower Stanislaus River, extending from Goodwin Dam down to the confluence of the San Joaquin River. The goal of this study is to develop a framework for monitoring life stages, and transitions among life stages, to quantify how water project operations and environmental variation influence life history expression, abundance, and population productivity. Data is recorded in a combination of paper to computer files and electronic-only files. Annual reports summarize the survey findings. While this project is ongoing, this is a completed dataset for the collection sessions performed in the years 2021- 2025.
Identification of an altitudinal migration pattern of Abies pinsapo in the Baetic Mountains through the presence of its life stages
<p>This data set is used to explore the altitudinal shift of <em>Abies pinsapo</em> Boiss. in the Baetic System. We analysed the potential distribution of the realised and reproductive niches of <em>A. pinsapo</em> populations in the Ronda Mountains (Southern Spain) by using species distribution models (SDMs) for two life stages within the current populations. The realised and reproductive niches of <em>A. pinsapo</em> are different to one another, which may indicate a displacement in its altitudinal distribution.</p>
MCR LTER: Coral Reef: Early life stage bottleneck determines rates of coral recovery following severe disturbance; Data for Speare et al., 2024, Ecology
The data included in this data package were collected on the north shore of Moorea, French Polynesia, from 2011-2018 to evaluate drivers of different recovery rates of corals at two depths (10m and 17m). Data on juvenile coral densities, growth, and mortality, were collected from annual time series photoquadrats. Data from two experiments on coral settlement tiles were used to evaluate how exclusion of fishes influences the density of coral recruits, and the survival of coral recruits at 10 and 17m. These data were used for analyses in the manuscript entitled "Early life stage bottleneck determines rates of coral recovery following severe disturbance". These data are in support of a publication Speare et al. (2024) Ecology. This material uses data collected by the U.S. National Science Foundation's (NSF) Moorea Coral Reef Long Term Ecological Research (MCR LTER) site under Grant No. OCE 2224354 (and earlier awards). Additional financial support to the MCR LTER site was provided through a generous gift from the Gordon and Betty Moore Foundation. Research was completed under permits issued by the French Polynesian Government (Délégation à la Recherche) and the Haut-commissariat de la République en Polynésie Francaise (DTRT) (Protocole d'Accueil 2005-2024).
Effects of life stage on the sensitivity of Folsomia candida to four pesticides
<p>This submission provides R-code and data files for our peer-reviewed work.</p><p>The R-notebook "Analysis_likelihood_ratio_test" contains the code used to estimate the parameters of concentration-response curves (EC10, EC50, LC10, LC50, and slopes) and perform likelihood ratio tests to compare curves from different tested life stages.</p><p>The R-notebook "Figures_Concentration_response_curves" showcases the code used to generate the figures presented in the manuscript.</p><p>The dataset files are provided in CSV format with Comma Separated Values:</p><ul><li>Cyproconazole_FolsomiaCandida_10days_20days_RawData_New.csv</li><li>Imidacloprid_FolsomiaCandida_10days_20days_RawData_New.csv</li><li>Teflubenzuron_FolsomiaCandida_10days_20days_RawData_New.csv</li><li>Thiacloprid_FolsomiaCandida_10days_20days_RawData_New.csv</li></ul><p>The submission includes the following:</p><ul><li>R files: R notebooks described above.</li><li>CSV files: Count data of springtail juveniles and adults.</li></ul><p> </p><p>This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 859891.</p><p>This publication reflects only the authors' view and the European Commission is not responsible for any use that may be made of the information it contains.</p>
Hydraulic Constraints on Two Life History Stages of Larrea tridentata in a Chihuahuan Desert Creosote Shrubland at the Sevilleta National Wildlife Refuge, New Mexico (2002-2003)
Maintaining high rates of water loss during times of high resource availability could allow establishing woody desert perennials to grow quickly by allowing them to take advantage of the fleeting but abundant monsoonal moisture typical of warm deserts like the Chihuahuan. However, a plant cannot endlessly increase water loss in order to grow faster --there are hydraulic constraints on rates of water loss. The hydraulic properties of each particular plant xylem and soil microsite, as well as the AR:AL absorbing root area to transpiring leaf area ratio) interact to set limits on rates of water loss. If transpiration rates become too high, cavitation may limit the ability of the xylem to supply water to the leaves. The main objective of this study was to test two hypotheses on a population of Larrea tridentata at the Sevilleta LTER in central New Mexico (1) do small plants grow faster and use water less conservatively than large, and (2) are there differences in the hydraulic constraints on small and large plants. Measurements were made every six weeks in the spring, summer and fall from April 2002 - August 2003. Field measurements of shoot growth, gas exchange and plant and soil water potentials were made to determine growth rates and water use. Measurements of leaf specific conductance determined the ability of the xylem to supply water to the leaves. Excavation findings were used to estimate (AR:AL). Xylem vulnerability curves and soil texture analysis were used to determine the hydraulic properties of the plant xylem and soil. A model determined where the limiting conductance occurred in the plant-soil continuum.
Ocean acidification induces distinct transcriptomic responses across life history stages of the sea urchin Heliocidaris erythrogramma
Ocean acidification (OA) from seawater uptake of rising carbon dioxide emissions impairs development in marine invertebrates, particularly in calcifying species. Plasticity in gene expression is thought to mediate many of these physiological effects, but how these responses change across life history stages remains unclear. The abbreviated lecithotrophic development of the sea urchin <i>Heliocidaris erythrogramma</i> provides a valuable opportunity to analyze gene expression responses across a wide range of life history stages, including the benthic, post-metamorphic juvenile. We measured the transcriptional response to OA in <i>H. erythrogramma</i> at three stages of the life cycle (embryo, larva, and juvenile) in a controlled breeding design. The results reveal a broad range of strikingly stage-specific impacts of OA on transcription, including changes in the number and identity of affected genes; the magnitude, sign, and variance of their expression response; and the developmental trajectory of expression. The impact of OA on transcription was notably modest in relation to gene expression changes during unperturbed development and dwarfed by genetic contributions from parentage. The latter result suggests that natural populations may provide an extensive genetic reservoir of resilience to OA. Taken together, these results highlight the complexity of the molecular response to OA, its substantial life history stage specificity, and the importance of contextualizing the transcriptional response to pH stress in light of normal development and standing genetic variation to better understand the capacity for marine invertebrates to adapt to OA.
Time spent in distinct life-history stages has sex-specific effects on reproductive fitness in wild Atlantic salmon
<p><span>In species with complex life cycles, life history theory predicts that fitness is affected by conditions encountered in previous life history stages. Here, we use a four-year pedigree to investigate if time spent in two distinct life history stages has sex-specific reproductive fitness consequences in anadromous Atlantic salmon (<i>Salmo salar</i>). We determined the amount of years spent in fresh water as juveniles (freshwater age, FW, measured in years), and years spent in the marine environment as adults (sea age, SW, measured in sea winters) on 264 sexually mature adults collected on a river spawning ground. We then estimated reproductive fitness as the number of offspring (reproductive success) and the number of mates (mating success) using genetic parentage analysis (>5000 offspring). Sea age is significantly and positively correlated with reproductive and mating success of both sexes whereby older and larger individuals gained the highest reproductive fitness benefits (females: 62.2% increase in offspring/SW and 34.8% increase in mate number/SW; males: 201.9% offspring/SW and 60.3% mates/SW). Younger freshwater age was significantly related to older sea age and thus increased reproductive fitness, but only among females (females: -33.9% offspring/FW and -32.4% mates/FW). This result implies that females can obtain higher reproductive fitness by transitioning to the marine environment earlier. In contrast, male mating and reproductive success was unaffected by freshwater age and more males returned at a younger age than females despite the reproductive fitness advantage of later sea age maturation. Our results show that the timing of transitions between juvenile and adult phases has a sex-specific consequence on female reproductive fitness, demonstrating a life-history trade-off between maturation and reproduction in wild Atlantic salmon.</span></p>
FIGURE 11 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 11. Phanoperla constanspina sp. nov. male nymphal habitus illustrating two general body pigmentation types. (A) (Haplotype: N-J 25. m) Pale to lighter brown, sometimes with darker wingpad tips. (B) (Haplotype: N-G 49. m). Dark to darker brown, sometimes with dark to black wingpads.
FIGURE 8 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 8. Phanoperla constanspina sp. nov. egg. (A) Entire egg. (B) Chorionic details. (C) Collar end (D) Anterior end. Scale = 100 µm.
Data and code for: Acute heat priming promotes short-term climate resilience of early life stages in a model sea anemone
<p>Across diverse taxa, sublethal exposure to abiotic stressors early in life can lead to benefits such as increased stress tolerance upon repeat exposure. This phenomenon, known as hormetic priming, is largely unexplored in early life stages of marine invertebrates, which are increasingly threatened by anthropogenic climate change. To investigate this phenomenon, larvae of the sea anemone and model marine invertebrate <em>Nematostella vectensis</em> were exposed to control (18°C) or elevated (24°C, 30°C, 35°C, or 39°C) temperatures for 1 hour at 3 days post-fertilization (DPF), followed by return to control temperatures (18°C). The animals were then assessed for growth, development, metabolic rates, and heat tolerance at 4, 7, and 11 DPF. Priming at intermediately elevated temperatures (24°C, 30°C, or 35°C) augmented growth and development compared to controls or priming at 39°C. Indeed, priming at 39°C hampered developmental progression, with around 40% of larvae still in the planula stage at 11 DPF, in contrast to 0% for all other groups. Total protein content, a proxy for biomass, and respiration rates were not significantly affected by priming, suggesting metabolic resilience. Heat tolerance was quantified with acute heat stress exposures, and was significantly higher for animals primed at intermediate temperatures (24°C, 30°C, or 35°C) compared to controls or those primed at 39°C at all time points. To investigate a possible molecular mechanism for observed changes in heat tolerance, the expression of heat shock protein 70 (HSP70) was quantified at 11 DPF. Expression of HSP70 significantly increased with increasing priming temperature, with the presence of a doublet band for larvae primed at 39°C, suggesting persistent negative effects of priming on protein homeostasis. Interestingly, primed larvae in a second cohort cultured to 6 weeks post-fertilization continued to display hormetic growth responses, whereas benefits for heat tolerance were lost; in contrast, negative effects of short-term exposure to extreme heat stress (39°C) persisted. These results demonstrate that some dose-dependent effects of priming waned over time while others persisted, resulting in heterogeneity in organismal performance across ontogeny following priming. Overall, these findings suggest that heat priming may augment the climate resilience of marine invertebrate early life stages via the modulation of key developmental and physiological phenotypes, while also affirming the need to limit further anthropogenic ocean warming.</p>
Figure 7. Aegiochus nohinohi Bruca, 2009 immatura staga 1 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 7. Aegiochus nohinohi Bruca, 2009 immatura staga 1 (NIWA 24018). A, Dorsal viaw. B–C, Vantral viaw. D, Lataral viaw. E, Antannula. F, Antanna. G, Mandibla. H, Maxillipad. I, Maxillula. J, Maxilla. Scalas: A–D, 1 mm; E–F, 0.25 mm (top, right); G–J, 0.25 mm (bottom, right).
Figure 8. Aegiochus nohinohi Bruca, 2009 A–D, Immatura staga 2 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 8. Aegiochus nohinohi Bruca, 2009 A–D, Immatura staga 2 (NIWA 24018). E–H, Adult mala (NIWA 24018). A, Dorsal viaw. B, Vantral viaw. C, Lataral viaw. D, Closa-up of undardavalopad panial lobas. E, Dorsal viaw. F, Vantral viaw. G, Lataral viaw. H, Closa-up of wall-davalopad panial lobas.
Figure 6. Aegiochus kanohi Bruca, 2009 immatura mala staga 3 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 6. Aegiochus kanohi Bruca, 2009 immatura mala staga 3 (NIWA 24023). A–B, Dorsal viaw. C, Lataral viaw. D, Vantral viaw. E, Antarovantral viaw. F, Antannula. G, Antanna. H, Mandibla. I, Maxillula. J, Maxilla. K, Maxillipad. L, Closa-up of undardavalopad thoracopod 7 and panial lobas. M, Plaon appandaga 2 with appandix masculina. Scalas: A–D, 2.5 mm; F–G, 500 µm; H–K, 250µm.
Figure 5 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 5. Aegiochus antarctica (Hodgson, 1910) immatura staga 1 (NIWA 23664). A, Dorsal viaw. B, Vantral viaw. C, Lataral viaw. D, Antarovantral viaw. E, Antannula. F, Antanna. G, Mandibla. H, Maxillula. I, Maxilla. J, Maxillipad. K, Plaon appandaga 2 without appandix masculina. Scalas: A–C, 1 mm; E–F, 500 µm; G–J, 200µm.
Figure 4 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 4. Aegiochus antarctica (Hodgson, 1910) immatura staga 2 (NIWA 23671). A, Dorsal viaw. B, Vantral viaw. C, Antarovantral viaw. D, Antannula. E, Antanna. F, Mandibla. G, Maxillula. H, Maxilla. I, Maxillipad. J, Closa-up of starnita 7 (without panas). K, Plaon appandaga 2 without appandix masculina. L, Exampla of panial lobas of adult mala. Scalas: A–B, 2 mm; D–E, 0.5 mm (top, right); F–I, 250 µm.
Figure 1. Aega monophthalma Johnston, 1834 immatura mala staga 3 in Reconstructing the life cycle of the isopodan group Aegidae with morphological descriptions and the importance of immature stages
Figure 1. Aega monophthalma Johnston, 1834 immatura mala staga 3 (NIWA 23759). A, Dorsal viaw. B, Vantral viaw. C, Lataral viaw. D, Antarovantral viaw. E, Antannula. F, Antanna. G, Mandibla. H, Maxillula. I, Maxilla. J, Maxillipad. K, Closa-up of undardavalopad thoracopod 7. L, Closa-up of panial opanings. M, Plaon appandaga 2 with appandix masculina. Scalas: A–C, 5 mm; E–F, 1 mm (top, right); G–J, 1 mm (bottom, right).
Lethal and sublethal effects of marine heatwaves on octocorals early life history stages
<p>In this study, the effect of increased water temperature (+4 ºC and +6 ºC above ambient, 20 ºC) on larval survival and settlement was evaluated for two of the most representative Mediterranean octocoral species (<em>Eunicella singularis</em> and <em>Corallium rubrum</em>). Moreover, data on larval biomass and caloric consumption of larvae per day are also provided.Our study shows that warmer treatments did not affect the survival of symbiotic <em>E. singularis </em>larvae, but drastically reduced the survival of the non-symbiotic <em>C. rubrum</em> larvae. The results on larval biomass and caloric consumption suggest that higher mortality rates of <em>C. rubrum</em> exposed to increased temperature were not related to depletion of endogenous energy in larvae. The results also show that settlement rates of <em>E. singularis</em> did not change in response to elevated temperature after 20 days of exposure, but larvae may settle fast and close to their native population at 26 ºC (+6 ºC). Although previous experimental studies found that adult colonies of both octocoral species are mostly resistant to thermal stress, our results on early life history stages suggest that the persistence and inter-connectivity of local populations may be severely compromised under continued trends in ocean warming.</p>
Egg size and offspring phenotype data at early life stages in seven Arctic charr morphs
<p>Maternal effects have the potential to alter early developmental processes of offspring and contribute to adaptive diversification. Egg size is a major contributor to offspring phenotype, which can influence developmental trajectories and potential resource use. However, to what extent intraspecific variation in egg size facilitates evolution of resource polymorphism is poorly understood. We studied multiple resource morphs of Icelandic Arctic charr, ranging from an anadromous morph – with a phenotype similar to the proposed ancestral phenotype – to sympatric morphs that vary in their degree of phenotypic divergence from the ancestral anadromous morph. We characterised variation in egg size and tested whether egg size influenced offspring phenotype at early-life stages (i.e. timing of- and size at- hatching and first feeding [FF]). We predicted that egg size would differ among morphs and be less variable as morphs diverge away from the ancestral anadromous phenotype. We also predicted that egg size would correlate with offspring size and developmental timing. We found morphs had different egg size, developmental timing and size at hatching and FF. Egg size increased as phenotypic proximity to the ancestral anadromous phenotype decreased, with larger eggs generally giving rise to larger offspring, especially at FF, but egg size had no effect on developmental rate. The interaction between egg size and the environment may have a profound impact on offspring fitness, where the resulting differences in early-life history traits may act to initiate and/or maintain resource morphs diversification. </p>
Fig. 2. Pamphilius benesi. —— A in Immature Stages and Life History of a Hazel Leaf-rolling Sawfly, Pamphilius benesi (Hymenoptera, Pamphiliidae)
Fig. 2. Pamphilius benesi. —— A, Eggs, remains of eggshell and newly hatched larva beginning to make leafroll, Group B, June 5; B, C, early instar larva, June 7; D, E, middle instar larva, June 14; F, late instar larva, June 23; G, H, J, late instar larva, June 21; I, late instar larva, June 28. All photographed by Kato.
Fig. 1. Pamphilius benesi. —— A in Immature Stages and Life History of a Hazel Leaf-rolling Sawfly, Pamphilius benesi (Hymenoptera, Pamphiliidae)
Fig. 1. Pamphilius benesi. —— A, Ovipositing female on leaf of Corylus sieboldiana, Group Ab, May 29; B, three eggs, Group Aa, May 29; C, remains of six eggshells, Group Aa and Ab, and leaf-roll made by young larvae, June 6; D, larvae inside the same leaf-roll, June 6; E, ovipositing female on leaf of C. sieboldiana, Group B, May 29; F, leaf with five eggs, Group B, May 29; G, eggs of Group B, possible marks of sticky substance arrowed, May 29. All photographed by Kato.
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.