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142 results for “mating behaviour”
Code for: Same-sex sexual behaviour and selection for indiscriminate mating
<p>File provides Mathematica code to replicate the analyses of "Same-sex sexual behaviour and selection for indiscriminate mating" by Lerch and Servedio. All figures from the manuscript (and its supplement) can be obtained by running the code. Comments for the code is provided for the "Additive death" section with other sections presented in parallel.</p>
Data from: Spatio-temporal dynamics of field cricket calling behaviour: implications for female mate search and mate choice
Amount of calling activity (calling effort) is a strong determinant of male mating success in species such as orthopterans and anurans that use acoustic communication in the context of mating behaviour. While many studies in crickets have investigated the determinants of calling effort, patterns of variability in male calling effort in natural choruses remain largely unexplored. Within-individual variability in calling activity across multiple nights of calling can influence female mate search and mate choice strategies. Moreover, calling site fidelity across multiple nights of calling can also affect the female mate sampling strategy. We therefore investigated the spatio-temporal dynamics of acoustic signaling behaviour in a wild population of the field cricket species Plebeiogryllus guttiventris. We first studied the consistency of calling activity by quantifying variation in male calling effort across multiple nights of calling using repeatability analysis. Callers were inconsistent in their calling effort across nights and did not optimize nightly calling effort to increase their total number of nights spent calling. We also estimated calling site fidelity of males across multiple nights by quantifying movement of callers. Callers frequently changed their calling sites across calling nights with substantial displacement but without any significant directionality. Finally, we investigated trade-offs between within-night calling effort and energetically expensive calling song features such as call intensity and chirp rate. Calling effort was not correlated with any of the calling song features, suggesting that energetically expensive song features do not constrain male calling effort. The two key features of signaling behaviour, calling effort and call intensity, which determine the duration and spatial coverage of the sexual signal, are therefore uncorrelated and function independently.
Data from: Seeing-good-gene-based mate choice: from genes to behavioural preferences
1. Although vertebrates have been reported to gain higher reproductive outputs by choosing mates, few studies have been conducted on threatened species. However, species recovery should benefit if natural mate choice could improve reproductive output (i.e., pair performance related to offspring number, such as increased clutch size, numbers of fertilized egg and fledglings). We assessed the evidence for major histocompatibility complex (MHC)-based mate preference in the endangered crested ibis (Nipponia nippon), and quantified the impacts of such choice on reproductive output. 2. We tested the hypothesis that crested ibis advertise "good genes" through external traits, by testing whether nuptial plumage characteristics and body morphology mediate mate choice for underlying genetic MHC variation. 3. We found differences between males and females in preferred MHC genotypes, external traits used in mate choice, and contributions to reproductive outputs. Females preferred MHC-heterozygous males, which had darker [i.e., lower total reflectance and ultraviolet (UV) reflectance] nuptial plumage. Males preferred females lacking the DABd allele at the MHC classⅡDAB locus, which had higher average body mass. DABd-free females yielded heavier eggs and more fledglings, while MHC-heterozygous males contributed to more fertilized eggs and fledglings. Fledging rate was highest when both parents had the preferred MHC genotypes (i.e., MHC-heterozygous father and DABd-free mother). Comparisons showed that free-mating wild and seminatural pairs yielded more fertilized eggs and more fledglings, with a higher fledging rate, than captive pairs matched artificially based on pedigree. 4. Conservation programs seldom apply modern research results to population management, which could hinder recovery of threatened species. Our results show that mate choice can play an important role in improving reproductive output, with an example in which an endangered bird selects mates using UV visual capability. Despite the undoubted importance of pedigree-based matching of mates in conservation programs, we show that free-mating can be a better alternative strategy.
Data from: An androgenic endocrine disruptor alters male mating behaviour in the guppy (Poecilia reticulata)
Hormonally active chemical pollution threatens human and wildlife populations globally. However, despite the well-established capacity of endocrine-disrupting chemicals (EDCs) to alter reproductive traits, relatively few studies have examined the impacts of EDCs on mechanisms of sexual selection. This study investigated the effects of short-term exposure to an environmentally realistic level of 17β-trenbolone—a potent anabolic steroid used in livestock production worldwide—on male mate preference, reproductive behaviour and morphology in the guppy (Poecilia reticulata). Male guppies prefer to mate with larger females because such females are generally more fecund. Hence, males gain direct fitness benefits by being choosy. Here, we found no significant effect of 17β-trenbolone exposure on male courting behaviour, with both unexposed and exposed males courting larger females more often. However, exposure to 17β-trenbolone significantly altered the amount of coercive copulatory behaviour ('sneak' matings) performed. Specifically, while both unexposed and exposed males demonstrated a preference for larger females by conducting more sneaking attempts towards these females, exposed males carried out a greater number of sneaks towards large females than did unexposed males. Further, exposure resulted in increased male condition index (i.e., mass relative to length). Together, our results show for the first time that 17β-trenbolone can alter reproductive behaviour and morphology in male fish at concentrations as low as 4 ng/L, highlighting the potential for disruption of reproductive processes in wildlife exposed to this potent agricultural contaminant.
Supplementary material 1 from: Katnoum C, Keetapithchayakul TS, Rahim AA, Wongkamhaeng K (2023) A new species of Cerapus (Amphipoda, Senticaudata, Ischyroceridae) from Mae Klong Estuary, with a discussion on their nesting and types of mating behaviour. Zoosystematics and Evolution 99(2): 557-574. https://doi.org/10.3897/zse.99.107974
Video of mating of Cerapus rivulus sp. nov.
Supplementary material 2 from: Shaw MR, Giannotta M, Herrera-Flórez AF, Klopfstein S (2021) Two males, one female: triplet-style mating behaviour in the Darwin wasp Xorides ater (Gravenhorst, 1829) (Hymenoptera, Ichneumonidae, Xoridinae) in the Swiss Alps. Alpine Entomology 5: 15-22. https://doi.org/10.3897/alpento.5.64803
Figure S1
figure 11 in Morphology and mating behaviour in the millipede Megaphyllum unilineatum (C.L. Koch, 1838) (Myriapoda, Diplopoda, Julida) under laboratory conditions
figure 11 Canonical variate analysis (cva) of differences in opisthomere shape between males with different mating status (bars: grey – mated males; white – non-mated males).
FIGURE 4 in Dancing with the devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid-Atlantic Ocean
FIGURE 4 | Mobula tarapacana observed in the Saint Peter and Saint Paul Archipelago. Left panelfemales with evidence of mating scars on pectoral fins. Right panel- males with evidences of mating on the claspers (swollen and/or abraded).
FIGURE 2 in Dancing with the devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid-Atlantic Ocean
FIGURE 2 | Spot patterns used for photo identification of Mobula tarapacana in the Saint Peter and Saint Paul Archipelago (SPSPA).
FIGURE 1 in Dancing with the devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid-Atlantic Ocean
FIGURE 1 | Geographical location of the Saint Peter and Saint Paul Archipelago (SPSPA; black triangle and inset) in the equatorial Atlantic Ocean. Red indicates Mobula tarapacana confirmed occurrences in the Atlantic Ocean (IUCN, 2019), while green squares are known occurrences in Brazilian waters.
Figure 6 in Mating behaviour and its relationship with morphological features in the millipede Pachyiulus hungaricus (Karsch, 1881) (Myriapoda, Diplopoda, Julida)
Figure 6. Canonical variate analysis (CVA) of leg shape in relation with mating status (rectangle: black – nonmated females, grey – mated females; circle: black – nonmated males, grey – mated males).
Figure 5 in Mating behaviour and its relationship with morphological features in the millipede Pachyiulus hungaricus (Karsch, 1881) (Myriapoda, Diplopoda, Julida)
Figure 5. Principal component analysis (PCA) of leg shape in relation with mating status (rectangle: black – nonmated females, grey – mated females; circle: black – nonmated males, grey – mated males).
Figure 6 in Mating behaviour in ageing Teratorhabditis palmarum (Nematoda: Rhabditida)
Figure 6. Number of contacts before mating in different age groups.
Figure 7 in Mating behaviour in ageing Teratorhabditis palmarum (Nematoda: Rhabditida)
Figure 7. Mating after first contact in different age groups.
Data from: Spawning behaviour of Arctic charr (Salvelinus alpinus): spawning synchrony, vibrational communication and mate guarding
A mismatch between male and female gamete release in external fertilizers can result in reduced or failed fertilization, sperm competition and reduced paternity. Here, spawning behaviour of free-living Arctic charr (Salvelinus alpinus) was video recorded, and their reproductive behaviour was analysed. From evaluating 157 spawning events we observed that females mainly spawned with a guarding male and the female and the guarding male synchronized timing of gamete releaseunder sperm competition. Although sneakers spawned with higher synchrony than the guarding male in single male spawning events, the average sneaker released his milt 0.6 seconds after the spawning female under sperm competition. Approximately 50% of the recorded spawning events occurred under sperm competition, where each event included an average of 2.7 males. Additionally, sneakers were more exposed to sperm competition than guarding males. An influx of males, in close proximity to the female, occurred during the behavioural sequences leading up to egg release, but this influx seemed not dependent on egg release, suggesting that something else than gonadal product attracts sneaker males to the spawning female. Just before and during the actual release of gametes the spawning couple vibrates their bodies in close contact and it seems likely that vibrational communication between the spawning couple reveals time of gamete release to surrounding sneaker males. This might explain the relative high level of synchrony in gamete release between the female and the males from both reproductive tactics under sperm competition. Thus, vibrational communication between the guarding male and the female comes with the cost of higher detectability from surrounding males and may represent a "double-edged sword" for the guarding male.
FIG. 4 in Diurnal mating behaviour of a Nisitrus sp. cricket (Orthoptera: Gryllidae) from Sumatra
FIG. 4. The female (right) mounting the male and mouthing his metanotal glands.
FIG. 6 in Diurnal mating behaviour of a Nisitrus sp. cricket (Orthoptera: Gryllidae) from Sumatra
FIG. 6. The male (left) giving a`leg-wave' with his left rear leg.
FIG. 3 in Diurnal mating behaviour of a Nisitrus sp. cricket (Orthoptera: Gryllidae) from Sumatra
FIG. 3. Male (left) backing and trilling.
FIG. 1 in Diurnal mating behaviour of a Nisitrus sp. cricket (Orthoptera: Gryllidae) from Sumatra
FIG. 1. Spermatophore visible beneath the abdomen of a calling male.
FIG. 2 in Diurnal mating behaviour of a Nisitrus sp. cricket (Orthoptera: Gryllidae) from Sumatra
FIG. 2. Male (left) calling to a female.
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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.