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139 results for “breeding season”
Sperm competition drives variation in testis size within and between breeding seasons in the gracile mouse opossum
<p>Data set on <i>Gracilinanus agilis</i> (Didelphimorphia: Didelphidae) with a reproducible script.</p><p> </p>
Influence of habitat quality and resource density on breeding-season female monarch butterfly (Danaus plexippus) movement and space use in north-central USA agroecosystem landscapes
<ol> <li> The eastern North American monarch butterfly is at risk of quasi-extinction due, in part, to the loss of breeding habitat in agricultural landscapes of the USA Midwest. Because adult females are not patch residents, egg abundance and distribution across the landscape are a function of their perceptual range, flight directionality, and flight step lengths. Conservation actions that account for habitat use in agricultural landscapes can enhance functional connectivity.</li> <li>Field-captured females (n=114) were released in a 64-ha area containing restored prairies, grass-dominated fields, and crop fields in Floyd County, Iowa, USA, and two 1,000 m linear north-south sections of grass-dominated roadside along secondary roads (~ 35 ha) with different proximity to prairie habitat in rural Story County, Iowa. Radio-tagged or untagged monarchs were released in areas with high-density, low-density, and zero density of forage and oviposition resources, as well as on habitat edges between high and zero-density habitats. Monarchs were observed for one hour. Radio-tagged individuals that flew beyond visual detection were relocated using handheld radio telemetry.</li> <li>Monarchs moved within and between habitat classes and typically performed up-wind search behavior. Monarchs successfully located resources, with some flying over 500 m to find high-density areas, providing evidence that the monarch's perceptual distance is > 100 m. Regardless of habitat class or field site, most step lengths were < 50 m, and turn angles were directional. Large steps (≥ 50 m) crossing habitat boundaries occurred with approximately half of the monarchs, which may indicate initiation of long-range searches for suitable habitat, consistent with their vagile behavior. Establishing habitat patches 50 m apart in agricultural landscapes would facilitate efficient movement.</li> <li>This study provides an extensive dataset of directly observed breeding-season monarch butterflies to assess the utilization of agricultural landscapes. Documentation of step lengths > 50 m in complex, agricultural landscapes would not have been possible without the aid of radio telemetry. Results provide improved estimates of perceptual range and flight patterns within and between habitat patches that support models that simulate natural population dynamics to enable conservation planning at a landscape scale.</li> </ol>
Figure 2 in Seasonal breeding in three sympatric rodent species in semi-arid Tigray, northern Ethiopia
Figure 2: Predicted mean of (A, B, C) the minimal number of animals alive and (D, E, F) proportion of breeding females in the three seasons, for each grid (red grid 1, blue grid 2). The predicted means (dots) and their standard error bars were derived from the general linear models.
Figure 4 in Seasonal breeding in three sympatric rodent species in semi-arid Tigray, northern Ethiopia
Figure 4: Mastomys awashensis monthly variation in (A) abundance (minimal number of animals alive, calculated per trapping session) in both grids (solid red line is grid 1, dashed blue line is grid 2), (B) proportion of breeding females (number of trapped breeding females divided by the MNA in that trap session) in both grids.
Figure 3 in Seasonal breeding in three sympatric rodent species in semi-arid Tigray, northern Ethiopia
Figure 3: Stenocephalemys albipes monthly variation in (A) abundance (minimal number of animals alive, calculated per trapping session) in both grids (solid red line is grid 1, dashed blue line is grid 2), (B) proportion of breeding females (number of trapped breeding females divided by the MNA in that trap session) in both grids.
Figure 1 in Seasonal breeding in three sympatric rodent species in semi-arid Tigray, northern Ethiopia
Figure 1: A glimpse of the sampling habitat in Adi-azab'o, located in the eastern Tigray, northern Ethiopia (photo on 13th October, 2018).(A) Represented a bushland habitat characterized by the dominant presence of Acacia ethbaica trees, where the sampling grids sited and (B) indicated some crop fields inside the enclosures.
Figure 5 in Seasonal breeding in three sympatric rodent species in semi-arid Tigray, northern Ethiopia
Figure 5: Acomys cahirinus monthly variation in (A) abundance (minimal number of animals alive, calculated per trapping session) in both grids (solid red line is grid 1, dashed blue line is grid 2), (B) proportion of breeding females (number of trapped breeding females divided by the MNA in that trap session) in both grids.
Habitat use and foraging parameters of breeding Skylarks indicate no seasonal decrease in food availability in heterogeneous farmland
<p>Reduced food availability during chick raising is a major driver of farmland bird declines. For the Eurasian Skylark (<i>Alauda arvensis</i>), food availability is determined by various factors (i.e., arthropod abundance/diversity, accessibility of the vegetation, distance to foraging sites). In modern farmland, it is supposed to decrease over the breeding season due to less penetrable vegetation. We explored foraging habitat selection by chick-raising Skylarks with a focus on the seasonal dynamics of habitat use and food availability. We investigated i) habitat selection concerning prey biomass/diversity, vegetation cover, and distance to foraging sites, ii) the overall and seasonal habitat use, and iii) seasonal developments of foraging parameters (e.g., the feeding frequency) as indicators of food availability. We collected data on foraging habitats and foraging parameters of chick-raising Skylark pairs at 51 nests from a Central European population in 2018 and 2019. Prey biomass/diversity and vegetation cover were measured for all habitats around 42 of these nests. As revealed by multivariate and compositional analyses, Skylarks mainly selected foraging habitats based on the proximity to nests. The most frequent habitats within home ranges could not be ranked according to an overall importance for foraging and their use partially changed over time. The feeding frequency increased throughout the breeding season, while other foraging parameters did not show significant changes. In contrast to our expectations, our data indicated therefore an increase, not a decrease in food availability in the late breeding season. This also implies that the habitat use was constantly suitable to raise offspring. We interpret this to be a consequence of the heterogeneous farmland composition of the study area that enabled Skylarks to establish a diverse home range and to benefit from synergetic effects of neighboring habitat types. Thus, our findings provide support for the high importance of crop diversity in Skylark conservation.</p>
Large-scale movement patterns in a social vulture are influenced by seasonality, sex, and breeding region
<p>Dataset (in RData format) and Scripts corresponding to each of the analyses carried out for the manuscript entitled "Large-scale movement patterns in a social vulture are influenced by seasonality, sex, and breeding region".</p>
Influence of habitat quality and resource density on breeding-season female monarch butterfly (Danaus plexippus) movement and space use in north-central USA agroecosystem landscapes
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The impact of urbanization on avian communities during the breeding season in the Huanghuai Plain of China
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Data from: Reliable effective number of breeders/adult census size ratios in seasonal-breeding species: opportunity for integrative demographic inferences based on capture-mark-recapture data and multilocus genotypes
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Data from: Female Dark-eyed Juncos (Junco hyemalis thurberi) produce male-like song in a territorial context during the early breeding season
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Data from: Survival varies seasonally in a migratory bird: linkages between breeding and non-breeding periods
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Data from: Dynamic expressions of hypothalamic genes regulate seasonal breeding in a natural rodent population
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Data from: Reconstruction of paternal genotypes over multiple breeding seasons reveals male green turtles do not breed annually
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Data from: Seasonality in spatial distribution: climate and land use have contrasting effects on the species richness of breeding and wintering birds
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Does breeding season variation affect evolution of a sexual signaling trait in a tropical lizard clade?
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Data from: Experimental traffic noise attracts birds during the breeding season
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Habitat use and foraging parameters of breeding Skylarks indicate no seasonal decrease in food availability in heterogeneous farmland
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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.