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.
5,990
datasets available to search
ShareScore release 0.9.0
Dataset results
5,990 results for “reproduction.”
Fig. 1 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)
Fig. 1. Parapodial morphology of species of Perinereis Kinberg, 1865 and points used to obtain segments and length ratios of parapodial structures described in this work. Arrows and labels correspond to points used for the measuring parapodial structures as described in Material and methods section. A. Parapodium from posterior chaetiger of Perinereis floridana (Ehlers, 1868) (ECOSUR P1100). B. Parapodium from natatory region of Perinereis floridana (LACM-AHF 7376). Abbreviations: Dc = dorsal cirrus; DDoL = distal lobe of dorsal ligule; DoL = dorsal ligule; LDc = lower lamella of dorsal cirrus; LoM = lower lamella of median ligule; LVc = lower lamella of ventral cirrus; MeL = median ligule; NeL = neuroacicular ligule; PDoL = proximal lobe of dorsal ligule; PoL = neuropodial postchaetal lobe; PreL = notopodial prechaetal lobe; UDc = upper lamella of dorsal cirrus; UVc = upper lamella of ventral cirrus; Vc = ventral cirrus; VeL = ventral ligule; VeLa = ventral lamella.
Response to COVID-19: Clients' perspectives on the utilization of reproductive, maternal and child health care services in Nigeria
<p>This dataset was a part of a cross-sectional descriptive study in 320 rural communities in 32 Local Government Areas (LGAs) across the Federal Capital Territory (FCT), Abuja, and 9 out of the 36 Nigerian States in 2020. The dataset contains views of women who used primary health care centres in the selected LGAs for maternal and child health care, and family planning services before, during, and after the COVID-19 pandemic lockdown in Nigeria. The sample size was determined using the Yamane sample size formula. The estimated sample size per State was 384 (3,840 for nine States and FCT), with a 10% adjustment for non-response, the total sample size was 422 per State or location (4220 for the nine States and FCT). The data are stored in SPSS format. <br> The study was an initiative of UNFPA Nigeria. They coordinated it under the One UN Basket fund to respond to COVID-19 and implemented it under the supervision of three national NGOs: The Women’s Health and Action Research Centre (WHARC), Education as a Vaccine (EVA), and the Planned Parenthood Federation of Nigeria (PPFN). </p> <p> </p>
Sublethal exposure to deltamethrin stimulates reproduction and has limited effects on post-hatching maternal care in the European earwig
<p>Data set and associated R script used to obtain the statistical results presented in the corresponding study.</p>
Fig. 2 in Comparative Analysis Of Fecundity In Related Amphimictic Aporrectodea Caliginosa And Apomictic A. Trapezoides Earthworms, And The Problem Of Reproductive Advantages Of Parthenogenetic Animals
Fig. 2. Mean number of cocoons per one mature specimen in close parthenogenetic (A. trapezoides) and amphimictic (A. caliginosa) earthworm species during the reproduction season of 2019.
Fig. 1 in Comparative Analysis Of Fecundity In Related Amphimictic Aporrectodea Caliginosa And Apomictic A. Trapezoides Earthworms, And The Problem Of Reproductive Advantages Of Parthenogenetic Animals
Fig. 1. Mean number of cocoons per one mature specimen in close parthenogenetic (A. trapezoides) and amphimictic (A. caliginosa) earthworm species during the reproduction season of 2018.
Data and JAGS-code for "Michel et al 2022 Ecology and Evolution - Reduced habitat quality increases intrinsic but not ecological costs of reproduction"
<p><strong>Abstract</strong></p> <p>Although the costs of reproduction are predicted to vary with the quality of the breeding habitat thereby affecting population dynamics and life-history trade-offs, empirical evidence for this pattern remains sparse and equivocal. Costs of reproduction can operate through immediate ecological mechanisms or through delayed intrinsic mechanisms. Ignoring these separate pathways might hinder the identification of costs and the understanding of their consequences. We experimentally investigated the survival costs of reproduction for adult little owls (<em>Athene noctua</em>) within a gradient of habitat quality. We supplemented food to nestlings, thereby relieving the parents’ effort for brood provisioning. We used radio-tracking and Bayesian multi-state modelling based on marked recapture and dead recovery to estimate survival rates of adult little owls across the year as a function of food supplementation and habitat characteristics. Food supplementation to nestlings during the breeding season increased parental survival not only during the breeding season but also during the rest of the year. Thus, the low survival of parents of unfed broods likely represents both, strong ecological and strong intrinsic costs of reproduction. However, while immediate ecological costs occurred also in high quality habitats, intrinsic costs carrying over to the post-breeding period occurred only in low quality habitats. Our results suggest that immediate costs resulting from ecological mechanisms such as predation, are high also in territories of high habitat quality. Long-term costs resulting from intrinsic trade-offs, however, are only paid in low quality habitats. Consequently, differential effects of habitat quality on immediate ecological and delayed intrinsic mechanisms can mask the increase of costs of reproduction in low quality breeding habitats. Intrinsic costs may represent an underrated mechanism of habitat quality affecting adult survival rate thereby considerably accelerating population decline in degrading habitats. This study therefore highlights the need for a long-term perspective to fully assess the costs of reproduction and the role of habitat quality in modifying these costs.</p>
Fig. 3. A in Data On The Reproductive Biology Of The Satanic Leaf-Tailed Gecko, Uroplatus Phantasticus (Squamata, Gekkonidae), At The Bion Terrarium Center As A Contribution To Ex Situ Offspring Programs
Fig. 3. A part of all fertile eggs laid by U. phantasticus females during 2020 breeding season; incubation boxes are filled with "Seramis" medium.
Fig. 1 in Data On The Reproductive Biology Of The Satanic Leaf-Tailed Gecko, Uroplatus Phantasticus (Squamata, Gekkonidae), At The Bion Terrarium Center As A Contribution To Ex Situ Offspring Programs
Fig. 1. Laboratory for breeding stock of U. phantasticus (A) and individual breeze-like minimally equipped terrariums (B).
Fig. 5. A in Data On The Reproductive Biology Of The Satanic Leaf-Tailed Gecko, Uroplatus Phantasticus (Squamata, Gekkonidae), At The Bion Terrarium Center As A Contribution To Ex Situ Offspring Programs
Fig. 5. A total number of eggs (pcs.) obtained from U. phantasticus females by dates during 2020 breeding season.
Fig. 2 in Reproductive Potentials Of Diploid And Polyploid Representatives Of The Genus Сobitis (Cypriniformes, Cobitidae)
Fig. 2. Ovarium weight variation depend on erythrocytes area size (mµ) of spined loaches of Stugna River with different ploidy levels.
Fig. 1 in Reproductive Potentials Of Diploid And Polyploid Representatives Of The Genus Сobitis (Cypriniformes, Cobitidae)
Fig. 1. Eggs number variation depend on erythrocytes area size (µm2) of spined loaches of Stugna River with different ploidy levels.
Fig. 3 in Reproductive Potentials Of Diploid And Polyploid Representatives Of The Genus Сobitis (Cypriniformes, Cobitidae)
Fig. 3. Eggs weight (mg) variation depend on erythrocytes area size (mµ) of spined loaches of Stugna River with different ploidy levels.
Fig. 3 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 3. Ovum (a) and germ of female studied during diapause of pregnancy: b — 3-blastomers zygote; c — blastula.
Fig. 2 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 2. Baculate rods of copulative organ of males: a — in age of one year; b — two years; c — in adulthood.
Fig. 4 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 4. The uterus of pregnant female, studied 31 December; in the right horn the highlighted location of blastula.
Data from: Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
<p>The activation of the immune system upon infection exerts a huge energetic demand on an individual, likely decreasing available resources for other vital processes, like reproduction. The factors that determine the trade-off between defensive and reproductive traits remain poorly understood. Here, we exploit the experimental tractability of the fruit fly <em>Drosophila melanogaster</em> to systematically assess the impact of immune system activation on pre-copulatory reproductive behaviour. Contrary to expectations, we found that male flies undergoing an immune activation continue to display high levels of courtship and mating success. Similarly, immune-challenged female flies remain highly sexually receptive. By combining behavioural paradigms, a diverse panel of pathogens and genetic strategies to induce the fly immune system, we show that pre-copulatory reproductive behaviours are preserved in infected flies, despite the significant metabolic cost of infection.</p>
Female reproductive fluid increases the opportunities for post-mating sexual selection by prolonging egg fertilization window
<p>Female reproductive fluid, the fluid that surrounds the eggs, has attracted increasing attention for its role in fertilization and post-mating sexual selection through its effects on sperm traits. Surprisingly, however, only a few studies have investigated the effects of female reproductive fluid on the eggs. Yet, these effects might offer great potential to affect fertilization dynamics by, for example, increasing the opportunities for post-mating sexual selection. Here, we determined whether, by extending the egg fertilization window (time available for egg fertilization), the female reproductive fluid could also increase the opportunities for multiple paternity. Using the Zebrafish Danio rerio we first tested the prediction that female reproductive fluid increases the egg fertilization window, and then, using a split-brood design with sperm of two males added at different times after eggs activation, we tested whether the degree of multiple paternity varies in presence or absence of female reproductive fluid. Our results reveal the potential of the female reproductive fluid to increase multiple paternity throughout its effects on the egg fertilization window thus broadening our knowledge of the mechanisms females in externally fertilizing species affect post-mating sexual selection.</p>
Pea aphid winged and wingless males exhibit reproductive, gene expression, and lipid metabolism differences
<p><span>Alternative, intraspecific phenotypes offer an opportunity to identify the mechanistic basis of differences associated with distinctive life-history strategies. Wing dimorphic insects, in which both flight-capable and flight-incapable individuals occur in the same population, are particularly well-studied in terms of why and how the morphs trade-off flight for reproduction. Yet despite a wealth of studies examining the differences between female morphs, little is known about male differences, which could arise from different causes than those acting on females. Here we examined reproductive, gene expression, and biochemical differences between pea aphid (<em>Acyrthosiphon pisum</em>) winged and wingless males. We find that winged males are competitively superior in one-on-one mating circumstances, but wingless males reach reproductive maturity faster and have larger testes. We suggest that males </span><span>tradeoff increased local matings with concurrent possible inbreeding for outbreeding and increased ability to find mates. At the mechanistic level, differential gene expression between the morphs revealed a possible role for activin and insulin signaling in morph differences; it also highlighted genes not previously identified as being functionally important in wing polymorphism, such as genes likely involved in sperm production. Further, we find that winged males have higher lipid levels, consistent with their use as flight fuel, but we find no consistent patterns of different levels of activity among five enzymes associated with lipid biosynthesis. Overall, our analyses provide evidence that winged versus wingless males exhibit differences at the reproductive, biochemical, and gene expression levels, expanding the field's understanding of the functional aspects of morph differences.</span></p>
Population genomics and sexual signals identify reproductive interference in Uperoleia
<p>When closely related species come into contact via range expansion, both may experience reduced fitness as a result of the interaction. Selection is expected to favor traits that minimize costly interspecies reproductive interactions (such as mismating) via a phenomenon called reproductive character displacement (RCD). Research on RCD frequently assumes secondary contact between species, but the geographic history of species interactions is often unknown. Landscape genomic data allows tests of geographic hypotheses about species origins and secondary contact through range expansion. We used landscape genomic data from single nucleotide polymorphisms (SNPs), mitochondrial sequence data, advertisement call data, and morphological data to investigate a species complex of toadlets (<em>Uperoleia borealis, U. crassa, U. inundata</em>) from northern Australia. Although the three species of frogs were morphologically indistinguishable in our analysis, we determined that <em>U. crassa</em> and <em>U. inundata</em> form a single species (synonymized here) based on an absence of genomic divergence. SNP data identified the phylogeographic origin of <em>U. crassa </em>as the Top End, with subsequent westward invasion into the range of <em>U. borealis</em> in the Kimberley. We identified six F1 hybrids, all of which had the <em>U. borealis</em> mitochondrial haplotype, suggesting unidirectional hybridization. Consistent with the RCD hypothesis, <em>U. borealis</em> and <em>U. crassa</em> sexual signals differ more in sympatry than in allopatry. Hybrid males have intermediate calls, which likely reduces attractiveness to females. Integrating landscape genomic data, mitochondrial sequencing, morphology, and behavioral approaches supplies us an unusually detailed collection of evidence for reproductive character displacement following range expansion and secondary contact.</p>
Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio)
<p>Human-driven increases in global mean temperatures are associated with concomitant increases in thermal variability. Yet, few studies have explored the impacts of thermal variability on fitness-related traits, limiting our ability to predict how organisms will respond to dynamic thermal changes. Among the myriad organismal responses to thermal variability, one of the most proximate to fitness – and, thus, a population's ability to persist - is reproduction. Here, we examine how a model freshwater fish (Danio rerio) responds to diel thermal fluctuations that span the species' viable developmental range of temperatures. We specifically investigate reproductive performance metrics including spawning success, fecundity, egg provisioning, and sperm concentration. Notably, we apply thermal variability treatments during two ontogenetic timepoints to disentangle the relative effects of developmental plasticity and reversible acclimation. We found evidence of direct, negative effects of thermal variability during later ontogenetic stages on reproductive performance metrics. We also found complex interactive effects of early and late-life exposure to thermal variability, with evidence of beneficial acclimation of spawning success and modification of the relationship between fecundity and egg provisioning. Our findings illuminate the plastic life-history modifications that fish may undergo as their thermal environments become increasingly variable.</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.