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64 results for “Seasonal environment”
Seasonal particle responses to near-bed shear stress in a shallow, wave- and current-driven environment
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Data from: Localization of QTL for diapause and other photoperiodically regulated life-history traits important in adaptation to seasonally varying environments
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Genomic prediction applied to multiple traits and environments in second season maize hybrids
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Data from: Ecology of the growth of Anolis nebulosus (Squamata: Dactyloidae) in a seasonal tropical environment in the Chamela region, Jalisco, Mexico
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Synchronized file of allele frequencies for: Using seasonal genomic changes to understand historical adaptation to new environments: parallel selection on stickleback in highly-variable estuaries
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Data from: Seasonal temperature, the lunar cycle and diurnal rhythms interact in a combinatorial manner to modulate genomic responses to the environment in a reef-building coral
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Data from: Seasonal differences in baseline innate immune function are better explained by environment than annual cycle stage in a year-round breeding tropical songbird
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Data from: Acclimation of leaf traits in seasonal light environments: are non-native species more plastic?
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Figures 3-5 from: França LF, Figueiredo-Paixão V, Duarte-Silva TA, Santos K (2020) The effects of rainfall and arthropod abundance on breeding season of insectivorous birds, in a semi-arid neotropical environment. Zoologia 37: 1-7. https://doi.org/10.3897/zoologia.37.e37716
Figures 3-5 (3) Aerial arthropod biomass, (4) accumulated precipitation and (5) active brood patches, during 27 sampling events. Data recorded between October 2015 and October 2016, with 14-day intervals, in an area of seasonally dry Neotropical forest in northeastern Brazil. The biomass were converted to proportion using the ratio between abundance at each sampling event and total abundance during the study. Brood patch was converted to proportion using the ratio between individuals with brood patches and total individuals captured during a sampling event. *In one month, we had three, instead of two, monthly samplings as a result of the 14-day interval between samples.
Figures 1-2 from: França LF, Figueiredo-Paixão V, Duarte-Silva TA, Santos K (2020) The effects of rainfall and arthropod abundance on breeding season of insectivorous birds, in a semi-arid neotropical environment. Zoologia 37: 1-7. https://doi.org/10.3897/zoologia.37.e37716
Figures 1-2 (1) Biomass and (2) number of arthropods recorded during 27 sampling events. Solid lines represent the aerial arthropods (windowpane trap and suction sampler), while dashed lines show terrestrial arthropod (pitfall trap). Data recorded between October 2015 and October 2016, with 14-day intervals, in an area of seasonally dry Neotropical forest, in northeastern Brazil. The abundance (biomass and number) were converted to proportion using the ratio between abundance at each sampling event and total abundance during the study. *In one month, we had three, instead of two, monthly samplings as a result of the 14-day interval between samples.
Data from: Early hatching enhances survival despite beneficial phenotypic effects of late-season developmental environments
Seasonal shifts in environmental conditions provide predictable cues to which organisms can respond in adaptive ways. For example, seasonal changes in temperature can induce phenotypes at different times of the year that have season-specific fitness benefits. Here, we tested the hypothesis that embryo responses to seasonal changes in thermal environments are adaptively matched to the timing of reproduction (environmental-matching hypothesis). We collected eggs of the brown anole lizard (Anolis sagrei) from early and late seasons and exposed them to early and late thermal regimes that mimic nest temperatures. After measuring offspring morphology and performance, we quantified their survival in the field. Females had higher fecundity, but produced smaller eggs, early in the season compared to late in the season. Late-season eggs exposed to late thermal regimes had relatively high survival, but early-season eggs exposed to early thermal regimes had similar survival rates to those exposed to mismatched conditions. Late-season nest temperatures and late-season eggs produced offspring that were relatively large and fast runners. However, despite phenotypic benefits of late-season conditions, early-season hatchlings had greater survival in the field. Our results do not fully support the environmental-matching hypothesis but suggest that selection favors seasonal shifts in reproductive investment of mothers (high early-season fecundity) over plastic responses of embryos to seasonal environmental changes.
Data from: Ecdysteroid hormones link the juvenile environment to alternative adult life histories in a seasonal insect
The conditional expression of alternative life strategies is a widespread feature of animal life and a pivotal adaptation to life in seasonal environments. To optimally match suites of traits to seasonally changing ecological opportunities, animals living in seasonal environments need mechanisms linking information on environmental quality to resource allocation decisions. The butterfly Bicyclus anynana expresses alternative adult life histories in the alternating wet and dry seasons of its habitat as endpoints of divergent developmental pathways triggered by seasonal variation in preadult temperature. Pupal ecdysteroid hormone titers are correlated with the seasonal environment, but whether they play a functional role in coordinating the coupling of adult traits in the alternative life histories is unknown. Here, we show that manipulating pupal ecdysteroid levels is sufficient to mimic in direction and magnitude the shifts in adult reproductive resource allocation normally induced by seasonal temperature. Crucially, this allocation shift is accompanied by changes in ecologically relevant traits, including timing of reproduction, life span, and starvation resistance. Together, our results support a functional role for ecdysteroids during development in mediating strategic reproductive investment decisions in response to predictive indicators of environmental quality. This study provides a physiological mechanism for adaptive developmental plasticity, allowing organisms to cope with variable environments.
Data from: Age, state, environment and season dependence of senescence in body mass
[No abstract entered]
Fig. 5. A in Temporal dynamics of fruit-feeding butterflies (Lepidoptera: Nymphalidae) in two habitats in a seasonal Brazilian environment
Fig. 5. A) Temporal variation in Nymphalidae species richness captured in the dry and wet seasons and in the 2 transitional periods between those seasons, wet to dry (T.wd) and dry to wet (T.dw), in savanna (Cerrado sensu stricto, ss) and gallery forest habitats in the Fazenda Água Limpa and the Reserva Ecológica do Roncador, Brasília, DF. The rarefaction curves compare the 4 climatic periods—dry (black triangles) and wet (black circles) seasons, and the transitional periods from wet to dry (T.wd, white circles) and from dry to wet (T.dw, white triangles)—in B) gallery forest and C) savanna separately.
Data from: Feedback between environment and traits under selection in a seasonal environment: consequences for experimental evolution
Batch cultures are frequently used in experimental evolution. Even though they are generally considered to simply drive a growth rate increase, traits evolution can be more complex. Indeed, recurrent batches form a seasonal environment as different phases repeat periodically and different traits can be under selection in the different seasons. Moreover, during culture the impact of organisms on the environment is important since the system is closed. Thus, the study of adaptation should take into account the environment and eco-evolutionary feedbacks. Using the data of an experimental evolution on yeast Saccharomyces cerevisiae, we develop a mathematical model to understand which traits are under selection, and what is the role of the environment for selection in a batch culture. We show that two kinds of traits are under selection in seasonal environments: life-history traits, related to growth and mortality, and transition traits, related to the ability to maintain high growth rate when the environment changes. The impact of environmental conditions can be summarized by the length of the different seasons which weight the importance of selection on each trait: the longer a season is, the higher is selection on the associated traits. Since phenotypes drive the length of each season, eco-evolutionary feedbacks emerge. Such feedbacks are known to promote coexistence between different species or strains. Our results show that the design of the batch in an experimental evolution can affect which traits are most selected because of these feedbacks.
Data from: Hard and soft selection on phenology through seasonal shifts in the general and social environments: a study on plant emergence time
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Data from: Feedback between environment and traits under selection in a seasonal environment: consequences for experimental evolution
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Data from: Early hatching enhances survival despite beneficial phenotypic effects of late-season developmental environments
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Data from: Sex allocation theory for facultatively sexual organisms inhabiting seasonal environments: the importance of bet-hedging
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Data from: Ecdysteroid hormones link the juvenile environment to alternative adult life histories in a seasonal insect
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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.