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.
27
datasets available to search
ShareScore release 0.9.0
Dataset results
27 results for “pre-copulatory”
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>
Genetic diversity and efficacy of natural selection in spiders with pre-copulatory sexual cannibalism
<p>Factors that increase reproductive variance among individuals act to reduce effective population size (Ne), which accelerates loss of genetic diversity and decreases efficacy of purifying selection. These factors include sexual cannibalism, offspring investment, and mating system. Pre-copulatory sexual cannibalism where the female consumes the male prior to mating exacerbates this effect. We performed comparative transcriptomics in two spider species, the cannibalistic Trechaleoides biocellata and the non-cannibalistic T. keyserlingi, to generate genomic evidence to support these predictions. First, we estimated heterozygosity and found that genetic diversity is relatively lower in the cannibalistic species. Second, we calculated dN/dS ratios as a measure of purifying selection, higher dN/dS ratio indicated relaxed purifying selection in the cannibalistic species. These results are consistent with the hypothesis that sexual cannibalism impacts operational sex ratio and demographic processes, which interact with evolutionary forces to shape the genetic structure of populations. However, other factors such as the mating system and life-history traits contribute to shape Ne. Comparative analyses across multiple contrasting species-pairs would be required to disentangle these effects. Our study highlights that extreme behaviours such as pre-copulatory cannibalism may have profound eco-evolutionary effects. </p>
Fig. 8 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 8. Multi-rayed star-like spicules of colonial tunicates Didemnum sp. in food pellets of Thysanozoon nigropapillosum (Hyman, 1959).
Fig. 6 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 6. Longitudinal section of Thysanozoon nigropapillosum (Hyman, 1959). A, pharynx and main intestine; B, food pellet remains inside the main intestine. fp, food pellet; mi, main intestine; ph, pharynx.
Fig. 9 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 9. Thysanozoon nigropapillosum (Hyman, 1959): copulation observed at Longdong bay, northeast coast of Taiwan, 25 July 2011. A, Dermal impregnation for unilateral insemination; B, One individual (right), with the paired penis stretched, gripping its partner (left) at the outermost margin. (spermatophore is indicated by an arrow)
Fig. 7 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 7. Thysanozoon nigropapillosum (Hyman, 1959) A, with colonial tunicates (indicated by arrows), found at Longdong Bay, Northeast Coast of Taiwan, 28 August 2008; B, regurgitated food pellet (indicated by arrowhead). Chuanfanshr, Kenting, southern Taiwan, 9 February 2006.
Fig. 4 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 4. Thysanozoon nigropapillosum (Hyman, 1959): rhabdites on epidermis (indicated by arrows). A, B, on the tips of papillae; C, distributed on the inner surface of the male atrium; D, distributed on the female pore.
Fig. 5 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 5. Distribution of Thysanozoon nigropapillosum (Hyman, 1959) A, around Taiwan; B, type locality (hollow square), and the probably distribution of Newman et al. (2003) collection (filled triangles), the distribution of Gosliner et al. (1996) collection (filled circles) in Indo-west Pacific.
Fig. 3 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 3. Diagrammatic representation of the reproductive anatomy of Thysanozoon nigropapillosum (Hyman, 1959). A, male. e, ejaculatory duct; in, intestine; ma, male pore; pr, prostate gland; se, seminal vesicle; sp, sperm; st, stylet; v, vas deferens. B, female. c, cement gland; f, female pore; mi, main intestine; p, pharynx; v, vagina.
Fig. 2 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 2. Thysanozoon nigropapillosum (Hyman, 1959). Anterior is to the right. A, dorsal view; B, ventral view. ce, cerebral eyespots; fp, female pore; m, mouth; mp, male pore; ph, pharynx; pt, pseudotentacle; s, sucker.
Fig. 1 in Re-description of Thysanozoon nigropapillosum (Polycladida: Pseudocerotidae) from the South China Sea, with observations on a novel pre-copulatory structure, sexual behaviour and diet
Fig. 1. Holotypes of Acanthozoon nigropapillosum Hyman, 1959 (Polycladida: Pseudocerotidae) at the Smithsonian Institution National Museum of Natural History, Washington D.C., USA. No. USNM 28661. Photograph by: Dr. Ning Chao.
Data from: Pre-copulatory reproductive behaviours are preserved in Drosophila melanogaster infected with bacteria
Open the record for dataset details and reuse information.
Data from: pre-copulatory choices drive post-copulatory decisions: mechanisms of female control shift across different life stages
Open the record for dataset details and reuse information.
Sexual selection in wild populations of seed bugs: the role of size in pre-copulatory mate choice by females and males
Open the record for dataset details and reuse information.
Genetic diversity and efficacy of natural selection in spiders with pre-copulatory sexual cannibalism
Open the record for dataset details and reuse information.
Behavioral estimates of mating success corroborate genetic evidence for pre-copulatory selection
<p>In promiscuous species, fitness estimates obtained from genetic parentage may often reflect both pre- and post-copulatory components of sexual selection. Directly observing copulations can help isolate the role of pre-copulatory selection, but such behavioral data are difficult to obtain in the wild and may also overlook post-copulatory factors that alter the relationship between mating success and reproductive success. To overcome these limitations, we combined genetic parentage analysis with behavioral estimates of size-specific mating in a wild population of brown anole lizards (<em>Anolis sagrei</em>). Males of this species are twice as large as females and multiple mating among females is common, suggesting the scope for both pre- and post-copulatory processes to shape sexual selection on male body size. Our genetic estimates of reproductive success revealed strong positive directional selection for male size, which was also strongly associated with the number of mates inferred from parentage. In contrast, a male's size was not associated with the fecundity of his mates or his competitive fertilization success. By simultaneously tracking copulations in the wild via the transfer of colored powder to females by males from different size quartiles, we independently confirmed that large males were more likely than small males to mate. We conclude that body size is primarily under pre-copulatory sexual selection in brown anoles, and that post-copulatory processes do not substantially alter this pre-copulatory selection. Our study also illustrates the utility of combining both behavioral and genetic methods to estimate mating success to disentangle pre- and post-copulatory processes in promiscuous species.</p>
Data from: Resource acquisition and pre-copulatory sexual selection
<p>Sexual selection influences the evolution of phenotypic traits and contributes to patterns of biodiversity. In many animals, mating involves sequential steps. Often, individuals must secure resources that are essential for mating (nests, territories, food), and then after securing a resource, individuals engage in competition for access to limited opposite-sex mates and gametes. A large body of empirical research and some verbal models have illustrated that resource acquisition can influence sexual selection. In general, though, we lack <em>a priori</em> predictions of when and how resource acquisition will influence sexual selection. Here, we use a mathematical framework to explore the link between resource acquisition and sexual selection on an advantageous mate-acquisition trait across biologically relevant trade-off scenarios. Our findings provide a set of testable predictions of how resource acquisition can influence sexual selection on mating traits. In general, selection on mate-acquisition traits is expected to be heavily influenced by: 1) the episode of selection considered, and in particular, whether one considers selection associated with the mating pool only or selection associated with both the mating pool and pre-mating pool; 2) whether resource-acquisition and mate-acquisition traits are positively associated or whether they trade off; and 3) the proportion of males with the resource- and mate-acquisition traits.</p>
Behavioral estimates of mating success corroborate genetic evidence for pre-copulatory selection
Open the record for dataset details and reuse information.
Data from: Resource acquisition and pre-copulatory sexual selection
Open the record for dataset details and reuse information.
Disentangling the effects of male age and mating history: contrasting effects of mating history on pre-copulatory mating behaviour and paternity success
<p>Many studies ask whether older males are better at acquiring mates. Even so, how age affects reproductive success is still poorly understood because male age and mating history are confounded in most studies: older males usually have more mating experience. To what extent does mating history rather than age explain variation in male mating success? And how do mating history and male age determine paternity when there is also post-copulatory sexual selection? Here we experimentally manipulated the mating history of old and young males in the eastern mosquitofish (Gambusia holbrooki). We then recorded male mating behaviour and share of paternity (1259 offspring from 232 potential sires) when they competed for mates and fertilizations. Old males, and males with no mating experience, spent significantly more time approaching females, and attempting to mate, than did young males and those with greater mating experience. Male age and mating history interacted to affect paternity: old males benefited from having previous mating experience, but young males did not. Our results highlight that the age-related changes in male reproductive traits and in paternity that have been described in many taxa, may be partly attributable to male mating history and not simply to age itself.</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.