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.
121
datasets available to search
ShareScore release 0.9.0
Dataset results
121 results for “reproductive seasonality”
Reproduction is driven by seasonal environmental variation in an equatorial mammal, the banded mongoose (Mungos mungo)
Open the record for dataset details and reuse information.
Data from: Patterns of annual and seasonal immune investment in a temporal reproductive opportunist
Open the record for dataset details and reuse information.
Supplementary material 4 from: Augustinus BA, Lommen STE, Fogliatto S, Vidotto F, Smith T, Horvath D, Bonini M, Gentili RF, Citterio S, Müller-Schärer H, Schaffner U (2020) In-season leaf damage by a biocontrol agent explains reproductive output of an invasive plant species. NeoBiota 55: 117-146. https://doi.org/10.3897/neobiota.55.46874
Figure S1. Mean plant volume ± se of A. artemisiifolia plants measured during the experiment in the four experimental sites
Data from: Chronological and biological age predict seasonal reproductive timing: an investigation of clutch initiation and telomeres in birds of known age
Female vertebrates that breed earlier in the season generally have greater reproductive success. However, evidence suggests that breeding early may be costly, thus leading to the prediction that females with fewer future reproductive events will breed earlier in the season. While chronological age is a good indicator of remaining lifespan, telomere lengths may also be good biomarkers of longevity as they potentially reflect lifetime 'wear and tear' (i.e. "biological age"). We examined whether variation in the timing of the first seasonal clutch was related to age and telomere length in female dark-eyed juncos (Junco hyemalis), predicting that older females and those with shorter telomeres would breed earlier. Both predictions held true and were independent of each other, as telomere length did not significantly vary with age. These results suggest that females may adjust their reproductive effort based on both chronological and biological age.
Data from: Asynchrony of seasons: genetic differentiation associated with geographic variation in climatic seasonality and reproductive phenology
Many organisms exhibit distinct breeding seasons tracking food availability. If conspecific populations inhabit areas that experience different temporal cycles in food availability spurred by variation in precipitation regimes, then they should display asynchronous breeding seasons. Thus, such populations might exhibit a temporal barrier to gene flow, which may potentially promote genetic differentiation. We test a central prediction of this hypothesis, namely, that individuals living in areas with more asynchronous precipitation regimes should be more genetically differentiated than individuals living in areas with more similar precipitation regimes. Using mitochondrial DNA sequences, climatic data, and geographical/ecological distances between individuals of 57 New World bird species mostly from the tropics, we examined the effect of asynchronous precipitation (a proxy for asynchronous resource availability) on genetic differentiation. We found evidence for a positive and significant cross-species effect of precipitation asynchrony on genetic distance after accounting for geographical/ecological distances, suggesting that current climatic conditions may play a role in population differentiation. Spatial asynchrony in climate may thus drive evolutionary divergence in the absence of overt geographic barriers to gene flow; this mechanism contrasts with those invoked by most models of biotic diversification emphasizing physical or ecological changes to the landscape as drivers of divergence.
Data from: Plasma carotenoid concentrations of incubating American kestrels (Falco sparverius) show annual, seasonal, and individual variation and explain reproductive outcome
In wild birds, the proximate and ultimate factors that affect circulating carotenoid concentrations remain poorly understood. We studied variation in plasma carotenoid concentrations across several scales: annual, seasonal, pair, territory and individual, and evaluated whether plasma carotenoid concentrations explained reproductive outcome of wild American kestrels (Falco sparverius). We sampled plasma carotenoid concentrations of 99 female and 80 male incubating kestrels from April to June in 2008 to 2012. Plasma carotenoid concentrations were explained by an interaction between year and sex, date, and random effects for pair and individual identity. In general, plasma carotenoid concentrations of males were significantly higher than females, but this depended on year. Within a breeding season, earlier nesting kestrels had higher carotenoid concentrations than later nesting kestrels, a pattern that is coincident with seasonal trends in local fitness. Pair and individual identity explained variation in carotenoid concentrations suggesting that carotenoid concentrations of mated birds were correlated, and some individuals consistently maintained higher carotenoid levels than others. Male carotenoid concentrations were positively associated with number of young fledged per pair. These results are consistent with the hypothesis that higher quality individuals have higher carotenoid levels compared to lower quality individuals, despite annual variations in carotenoid availability.
Data from: Linking oceanographic conditions, migratory schedules and foraging behaviour during the non‐breeding season to reproductive performance in a long‐lived seabird
1. Studies of the mechanisms underlying climate-induced population changes are critically needed to better understand and accurately predict population responses to climate change. Long-lived migratory species might be particularly vulnerable to climate change as they are constrained by different climate conditions and energetic requirements during the breeding and non-breeding seasons. Yet, most studies primarily focus on the breeding season of these species lifecycle. Environmental conditions experienced in the non-breeding season may have downstream effects on the other stages of the annual lifecycle. Not investigating such effects may potentially lead to erroneous inferences about population dynamics. 2. Combining demographic and tracking data collected between 2006 and 2013 at Kerguelen Island on a long-lived migratory seabird, the Black-Browed Albatross (Thalassarche melanophris), we investigated the links between sea surface temperature during the non-breeding season and behavioural and phenological traits (at-sea behaviour and migratory schedules) while accounting for different responses between birds of different sex and reproductive status (previously failed or successful breeders). We then explored if variation in the foraging behaviour and timing of spring migration influenced subsequent reproductive performance. 3. Our results showed that foraging activity and migratory schedules varied by both sex and reproductive status suggesting different energetic requirements and constraints among individuals. Higher sea surface temperatures during late winter, assumed to reflect poor winter conditions, were associated with an earlier departure from the wintering grounds and an extended pre-breeding period. However, an earlier spring migration and an earlier return to Kerguelen grounds were associated with a lower breeding success. 4. Our results highlighted that behaviour during some periods of the non-breeding season, particularly towards the end of the wintering period and the pre-breeding period had a significant effect on the subsequent reproductive success. Therefore, caution needs to be given to all stages of the annual cycle when predicting the influence of climate on population dynamics.
FIGURE 2 in Does The Reproductive Season Account For More Records Of Birds In A Marked Seasonal Climate Landscape In The State Of São Paulo, Brazil?
FIGURE 2: Boxplot (a) and hierarchical cluster analysis (b) of monthly rainfall values collected in Bauru, state of São Paulo, southeastern Brazil, from January 2004-December 2010.
FIGURE 1 in Does The Reproductive Season Account For More Records Of Birds In A Marked Seasonal Climate Landscape In The State Of São Paulo, Brazil?
FIGURE 1: Location (white circle) where bird surveys were carried out in the municipality of Bauru (black arrow), state of São Paulo, southeastern Brazil. Shades of gray represent the original Cerrado vegetation cover (light hue) and the Atlantic forest (intermediate hue); dark gray hues indicate the present-day distribution of Cerrado remnant vegetation.
FIGURE 4 in Does The Reproductive Season Account For More Records Of Birds In A Marked Seasonal Climate Landscape In The State Of São Paulo, Brazil?
FIGURE 4: Differences in the numbers of species (a) and individuals (b) recorded during breeding and nonbreeding seasons at the Jardim Botânico (triangles) and at the UNESP campus (squares), Bauru, state of São Paulo, southeastern Brazil, from September 2005-November 2006. Error bars represent SE.
Datasets and scripts for: flexible reproductive seasonality in African-dwelling papionins
<p>Please read the readme file before looking at scripts and datasets. </p>
Data from: Constitutive innate immunity of tropical House Wrens varies with season and reproductive activity
In lowland Neotropical regions, where air temperature and day length remain relatively constant year-round, seasonality is determined primarily by changes in rainfall. The wet season triggers the start of breeding for many Neotropical birds, but also alters the antigenic environment, likely increasing the risk of disease transmission. We explored two hypotheses about temporal variation in constitutive innate immunity of a Neotropical bird, the House Wren (Troglodytes aedon). One hypothesis proposes that Neotropical wrens up-regulate their immune function in the wet season either in anticipation of or in response to vectors that become more prevalent. A second hypotheses proposes that during periods of putative high resource demand, such as when parents are feeding young, immune function would be compromised and downregulated. Controlling for reproductive stage, we found that microbicidal capacity of blood against Escherichia coli was higher in the wet than the dry season, consistent with the antigen response hypothesis. Phagocytosis of E.coli and Staphylococcus aureus did not differ between wet and dry seasons. Microbicidal capacity and H/L-ration of tropical House Wrens did not vary among reproductive stages, and our data offered no support for the idea that immune function is compromised during the period when parents are feeding young.
Figure 1 in Reproductive phenology in a Neotropical aquatic snake shows marked seasonality influenced by rainfall patterns
Figure 1. Habitat of Helicops pastazae in the Bata River. (a) Map locating the studied population of H. pastazae. (b) Adult female of H. pastazae. (c) Bata River during the dry season surrounded by rocks and relictual forest. (d) Chivor dam. (e) Discharge of the water dam of Chivor. Photographs A-D by Diego A. Gómez-Sánchez, and photograph E by Adrian Pinzón.
Figure 4 in Reproductive phenology in a Neotropical aquatic snake shows marked seasonality influenced by rainfall patterns
Figure 4. Proportion of adult females and males of H. pastazae in different reproductive stages by season. (a) Females in previtellogenic (dark grey), vitellogenic I (light grey), vitellogenic II (white), and gravid (black) stages. (b) Males in stage 4 (black), stage 5 (dark grey), stage 6 (light grey), and stage 7 (white) of spermatogenesis. The numbers above the bars represent the sample size.
Figure 3 in Reproductive phenology in a Neotropical aquatic snake shows marked seasonality influenced by rainfall patterns
Figure 3. Monthly variation in gonadal measurements and reproductive stages versus mean rainfall by month. Striped bars indicate the 4-month dry season. White bars indicate the high-rainfall portion of the wet season and grey bars indicate the low-rainfall portion. (a) Monthly variation in the follicular diameter and reproductive stages in H. pastazae. Dark grey triangles: previtellogenic follicles. Squares: vitellogenic I follicles. Dark grey circles: vitellogenic II follicles. Open circles: females with oviductal eggs. (b) Monthly variation in testicular volume (mm3) and spermatogenic stages. Open circles: Stage 4 (early spermatids at lumen). Gray triangles: stage 5 (transforming spermatids at lumen). Dark grey circles: stage 6 (abundant spermatozoa at lumen). White squares: Stage 7 (testicular regression).
Figure 2 in Reproductive phenology in a Neotropical aquatic snake shows marked seasonality influenced by rainfall patterns
Figure 2. Sexual dimorphism in juveniles and adults body shape of H. pastazae. (a) Snout-vent length for both juveniles and adults. (b) Juveniles tail length. (c–f) Sexual dimorphism in adults. (c) Tail length. (d) Head length. (e) Head width. (f) Mid-body width considering only previtellogenic females. Closed circle: males. Opened circles: females.
Data from: Phenotypic correlates of Clock gene variation in a wild blue tit population: evidence for a role in seasonal timing of reproduction
Open the record for dataset details and reuse information.
Data from: Seasonality in reproduction and reproductive physiology of caviomorphs
Open the record for dataset details and reuse information.
Data from: Asynchrony of seasons: genetic differentiation associated with geographic variation in climatic seasonality and reproductive phenology
Open the record for dataset details and reuse information.
Data from: Migratory strategy explains differences in timing of female reproductive development in seasonally sympatric songbirds
Open the record for dataset details and reuse information.
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.