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43 results for “winter activity”
Figure 1 in Winter-active wolf spiders (Araneae: Lycosidae) in thermal habitats from western Romania
Figure 1. Map of the surveyed localities with thermal habitats in western Romania (1, Moneasa; 2, Ciocaia; 3, Roşiori; 4, Roşiori/Tămăşeu; 5, Săcuieni I; 6, Săcuieni II; 7, Curtici; 8, Socodor; 9, Chiribiş; 10, Chişlaz; 11, Livada de Bihor; 12, Mădăras; 13, Răbăgani; 14, Sânnicolau de Munte; 15, Tărian; 16, Acâş; 17, Beltiug; 18, Mihăieni; 19, Chiraleu; 20, Oradea; 21, Săcuieni III; 22, Tămăşeu; AR = Arad county, BH = Bihor county, SM = Satu Mare county).
Fig. 3 in Circadian activity patterns of the Red fox (Vulpes vulpes) and the Stone marten (Martes foina) in agricultural landscape of Northwestern Bulgaria during autumn-winter period
Fig. 3. Stone marten (Martes foina) and Red fox (Vulpes vulpes) daily activity patterns in protected area "Zlatiyata", Northwestern Bulgaria.
Fig. 2 in Circadian activity patterns of the Red fox (Vulpes vulpes) and the Stone marten (Martes foina) in agricultural landscape of Northwestern Bulgaria during autumn-winter period
Fig. 2. Stone marten, Martes foina (left) and Red fox, Vulpes vulpes (right) captured in protected area "Zlatiyata", Northwestern Bulgaria.
Fig. 1 in Is the Kotschy's Gecko Mediodactylus kotschyi (Steindachner, 1870) (Reptilia: Gekkonidae) active during the winter?
Fig. 1. The observed specimens of M. kotschyi rumelicusfrom the building of the University of Food Technologies in Plovdiv (Bulgaria). A – an adult specimen, observed on 09.11.2015; B - an adult specimen, observed on 18.11.2015. Photos: S. Basheva.
Figure 2 in Time-activity budgets of wintering Ferruginous Duck, Aythya nyroca, at Gajoldoba wetland, Jalpaiguri, India
Figure 2. Mean percentage of nocturnal time spent in various activities by the Ferruginous Duck in different time blocks, with standard error bars.
Figure 1 in Time-activity budgets of wintering Ferruginous Duck, Aythya nyroca, at Gajoldoba wetland, Jalpaiguri, India
Figure 1. Percentage of time allocated to different activities by Ferruginous Duck at different parts of winter season.
Figure 2 in Diurnal time-activity budget and foraging techniques of red-crested pochards (Netta rufina) wintering at the wetlands of West Bengal, India
Figure 2. Canonical correspondence analysis (CCA with 95% ellipses) ordination diagram showing the scatter plot for the month-wise and site-wise density of the wintering RCPs together with the selected environmental variables. Vector lines represent the relationship of significant environmental variables to the ordination axes; their length is proportional to their relative significance.
Figure 1 in Diurnal time-activity budget and foraging techniques of red-crested pochards (Netta rufina) wintering at the wetlands of West Bengal, India
Figure 1. Study site (Adra saheb bandh,Purulia saheb bandh, Kadamdeuli Dam, and Gangdoa Dam) locations inWest Bengal, India (India and West Bengal maps not in scale).
Figure 4 in Diurnal time-activity budget and foraging techniques of red-crested pochards (Netta rufina) wintering at the wetlands of West Bengal, India
Figure 4. Comparison of the aggregated proportional time budget (values in percentages of the time spent) of the diurnal foraging activities of male and female RCPs in January and December; deep water conditions prevailed in both December and January at Sites 1, 2, and 4, while shallow water conditions prevailed at Site 3 in January.
Figure 1 in Nematodes infest winter-active chironomids in Minnesota trout streams
Figure 1. Female Orthocladiinae longevity and survival probability with and without nematode parasitism in Ike's Creek. Longevity defined as days lived post collection. (a) Box and whisker boundaries signify the maximum, 75th percentile, median, 25th percentile, and minimum longevity values. Black diamonds (◆) indicate mean longevity and dots (•) indicate outliers. Wilcoxon tests with Benjamini & Hochberg multiple test corrections were used to determine statistical differences between parasitized and non-parasitized individuals. (b) Kaplan-Meier survivorship curves indicate the proportion of individuals alive on a given day. Log-Rank tests were used to determine statistical differences between parasitized and non-parasitized individuals.
Social partners and temperature jointly affect morning foraging activity of small birds in winter
Daily foraging activity of small wintering birds is classically thought to be driven by the need to gather enough energy reserves to survive each night. A separate line of research has shown that sociality is a major driver in winter foraging activities in many species. Here, we use wintering birds as a study system to move towards an integrative understanding of the influence of energy requirements and sociality on foraging ecology. We used RFID-enabled feeders in Lincoln, Nebraska, USA in January-March 2019 to measure foraging activity in two species (downy woodpecker, <i>Picoides pubescens</i>, and white-breasted nuthatches, <i>Sitta carolinensis</i>). We analyzed the relationship between overnight temperature and morning foraging activity and found that lowest overnight temperature was negatively correlated with morning visitation at feeders. We then used a network approach to ask if flock associations explain similarity in birds' foraging activity. In both species, individuals with stronger associations in a social network were more likely to share similar feeder activity, and an index of social partners' activity explained foraging activity better than overnight temperature. This brings forth new questions about the interplay between individual response to temperature and social factors in shaping how small animals cope with harsh winter conditions.
Fig. 1 in A Case of winter activity of the Hermann's Tortoise (Testudo hermanni Gmelin, 1789) (Reptilia: Testudinidae) from Bulgaria
Fig. 1. The plantation of Quercus suber and the adult female T. hermanni recorded in it.
Fig. 1 in Circadian activity patterns of the Red fox (Vulpes vulpes) and the Stone marten (Martes foina) in agricultural landscape of Northwestern Bulgaria during autumn-winter period
Fig. 1. Location of the protected area "Zlatiyata" in Northwestern Bulgaria.
Data associated with studies on the establishment, winter activity, and dispersal of crapemyrtle bark scale
<p>These data files are associated with studies on the establishment, winter activity, and dispersal of crapemyrtle bark scale .</p>
Fig. 1 in New Distributional Records and Another Case of Winter Activity of Malpolon insignitus (Geoffroy Saint-Hilaire, 1827) (Reptilia: Psammophiidae) in South-Western Bulgaria
Fig. 1. Distribution of Malpolon insignitus in south-western Bulgaria, based on a 5 km UTM grid.
Seasonal activity changes in raccoon dogs and influences of environmental factors from autumn to winter
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Solar parks provide heterogeneous habitats for winter-active ground-dwelling predatory arthropods
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Social partners and temperature jointly affect morning foraging activity of small birds in winter
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Data from: Body temperature, heart rate, and activity patterns of two boreal homeotherms in winter: homeostasis, allostasis, and ecological coexistence
<ol> <li>Organisms survive environmental variation by combining homeostatic regulation of critical states with allostatic variation of other traits, and species differences in these responses can contribute to coexistence in temporally-variable environments.</li> <li>In this paper, we simultaneously record variation in three functional traits – body temperature (Tb), heart rate, and activity - in relation to three forms of environmental variation – air temperature (Ta), photoperiod, and experimentally-manipulated resource levels – in free-ranging snowshoe hares and North American red squirrels to characterize distinctions in homeotherm responses to the extreme conditions of northern boreal winters.</li> <li>Hares and squirrels differed in the level and precision of Tb regulation, but also in the allostatic pathways necessary to maintain thermal homeostasis. Hares demonstrated a stronger metabolic pathway (through heart rate variation reflective of the thermogenesis), while squirrels demonstrated a stronger behavioral pathway (through activity variation that minimizes cold exposure).</li> <li>As intermediate-sized, winter-active homeotherms, hares and squirrels share many functional attributes, yet, through the integrated monitoring of multiple functional traits in response to shared environmental variation, our study reveals many pairwise species differences in homeostatic and allostatic traits, that both define and are defined by the natural history, functional niches, and coexistence of sympatric species.</li> </ol>
Data from: The evolution of colour polymorphism in British winter‐active Lepidoptera in response to search image use by avian predators
Phenotypic polymorphism in cryptic species is widespread. This may evolve in response to search image use by predators exerting negative frequency‐dependent selection on intraspecific colour morphs, "apostatic selection". Evidence exists to indicate search image formation by predators and apostatic selection operating on wild prey populations, though not to demonstrate search image use directly resulting in apostatic selection. The present study attempted to address this deficiency, using British Lepidoptera active in winter as a model system. It has been proposed that the typically polymorphic wing colouration of these species represents an anti‐search image adaptation against birds. To test (a) for search image driven apostatic selection, dimorphic populations of artificial moth‐like models were established in woodland at varying relative morph frequencies and exposed to predation by natural populations of birds. In addition, to test (b) whether abundance and degree of polymorphism are correlated across British winter‐active moths, as predicted where search image use drives apostatic selection, a series of phylogenetic comparative analyses were conducted. There was a positive relationship between artificial morph frequency and probability of predation, consistent with birds utilising search images and exerting apostatic selection. Abundance and degree of polymorphism were found to be positively correlated across British Lepidoptera active in winter, though not across all taxonomic groups analysed. This evidence is consistent with polymorphism in this group having evolved in response to search image driven apostatic selection and supports the viability of this mechanism as a means by which phenotypic and genetic variation may be maintained in natural populations.
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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.