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196 results for “Free-ranging”
Effects of snake fungal disease on short-term survival, behavior, and movement in free-ranging snakes
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Data from: Free-ranging dogs prefer petting over food in repeated interactions with unfamiliar humans
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Data from: Repeatability of circadian behavioural variation revealed in free-ranging marine fish
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Data from: Denning habits of free-ranging dogs reveal preference for human proximity
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Data from: Uninhibited chickens: ranging behavior impacts motor self-regulation in free-range broiler chickens (Gallus gallus domesticus)
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Genotypes of Italian free-ranging dogs
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Data from: Free-ranging bats alter thermoregulatory behavior in response to reproductive stage, roost type, and weather
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Data from: Processing of acceleration and dive data on-board satellite relay tags to investigate diving and foraging behaviour in free-ranging marine predators
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Acquisition of object-robbing and object/food-bartering behaviors: A culturally maintained token economy in free-ranging long-tailed macaques
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Data from: Social facilitation can impact the responses of free-ranging dogs (Canis lupus familiaris) towards physical cognitive tasks
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Data from: Foraging and fasting can influence contaminant concentrations in animals: an example with mercury contamination in a free-ranging marine mammal
Large fluctuations in animal body mass in relation to life-history events can influence contaminant concentrations and toxicological risk. We quantified mercury concentrations in adult northern elephant seals (Mirounga angustirostris) before and after lengthy at sea foraging trips (n = 89) or fasting periods on land (n = 27), and showed that mercury concentrations in blood and muscle changed in response to these events. The highest blood mercury concentrations were observed after the breeding fast, whereas the highest muscle mercury concentrations were observed when seals returned to land to moult. Mean female blood mercury concentrations decreased by 30% across each of the two annual foraging trips, demonstrating a foraging-associated dilution of mercury concentrations as seals gained mass. Blood mercury concentrations increased by 103% and 24% across the breeding and moulting fasts, respectively, demonstrating a fasting-associated concentration of mercury as seals lost mass. In contrast to blood, mercury concentrations in female's muscle increased by 19% during the post-breeding foraging trip and did not change during the post-moulting foraging trip. While fasting, female muscle mercury concentrations increased 26% during breeding, but decreased 14% during moulting. Consequently, regardless of exposure, an animal's contaminant concentration can be markedly influenced by their annual life-history events.
Data from: Diurnal body temperature patterns in free-ranging populations of two southern African arid-zone nightjars
Endotherms allocate large amounts of energy and water to the regulation of a precise body temperature (Tb), but can potentially reduce thermoregulatory costs by allowing Tb to deviate from normothermic levels. Many data on heterothermy at low air temperatures (Ta) exist for caprimulgids, whereas data on thermoregulation at high Ta are largely absent, despite members of this taxon frequently roosting and nesting in sites exposed to high operative temperatures. We investigated thermoregulation in free-ranging Rufous-cheeked Nightjars (Caprimulgus rufigena) and Freckled Nightjars (Caprimulgus tristigma) in the southern African arid zone. Individuals of both species showed labile Tb fluctuating around a single modal Tb (Tb-mod). Average Tb-mod was 39.7 °C for Rufous-cheeked Nightjars and 39.0 °C for Freckled Nightjars. In both species, diurnal Tb increased with increasing Ta. At Ta ≥ 38 °C, Rufous-cheeked Nightjar mean Tb increased to 42 °C, equivalent to 2.3 °C above Tb-mod. Under similar conditions, Freckled Nightjar Tb was on average only 1.1 °C above Tb-mod, with a mean Tb of 40.0 °C. Freckled Nightjars are one of the most heterothermic caprimulgids investigated to date, but our data suggest that during hot conditions this species maintains Tb within a narrow range above Tb-mod, possibly reflecting an evolutionary tradeoff between decreased thermal sensitivity to lower Tb but increased sensitivity to high Tb. These findings reveal how general thermoregulatory patterns at similar Ta can vary even among closely related species.
Data from: An active-radio-frequency-identification system capable of identifying co-locations and social-structure: validation with a wild free-ranging animal
Behavioural events that are important for understanding sociobiology and movement ecology are often rare, transient and localised, but can occur at spatially distant sites e.g. territorial incursions and co-locating individuals. Existing animal tracking technologies, capable of detecting such events, are limited by one or more of: battery life; data resolution; location accuracy; data security; ability to co-locate individuals both spatially and temporally. Technology that at least partly resolves these limitations would be advantageous. European badgers (Meles meles L.), present a challenging test-bed, with extra-group paternity (apparent from genotyping) contradicting established views on rigid group territoriality with little social-group mixing. In a proof of concept study we assess the utility of a fully automated active-radio-frequency-identification (aRFID) system combining badger-borne aRFID-tags with static, wirelessly-networked, aRFID-detector base-stations to record badger co-locations at setts (burrows) and near notional border latrines. We summarise the time badgers spent co-locating within and between social-groups, applying network analysis to provide evidence of co-location based community structure, at both these scales. The aRFID system co-located animals within 31.5 m (adjustable) of base-stations. Efficient radio transmission between aRFIDs and base-stations enables a 20 g tag to last for 2–5 years (depending on transmission interval). Data security was high (data stored off tag), with remote access capability. Badgers spent most co-location time with members of their own social-groups at setts; remaining co-location time was divided evenly between intra- and inter-social-group co-locations near latrines and inter-social-group co-locations at setts. Network analysis showed that 20–100% of tracked badgers engaged in inter-social-group mixing per week, with evidence of trans-border super-groups, that is, badgers frequently transgressed notional territorial borders. aRFID occupies a distinct niche amongst established tracking technologies. We validated the utility of aRFID to identify co-locations, social-structure and inter-group mixing within a wild badger population, leading us to refute the conventional view that badgers (social-groups) are territorial and to question management strategies, for controlling bovine TB, based on this model. Ultimately aRFID proved a versatile system capable of identifying social-structure at the landscape scale, operating for years and suitable for use with a range of species.
Data from: Nutrient-specific compensation for seasonal cold stress in a free-ranging temperate colobine monkey
1. Homeostatic responses of animals to environmentally-induced changes in nutrient requirements provide a powerful basis for predictive ecological models, and yet such responses are virtually unstudied in the wild. 2. We tested for macronutrient-specific compensatory feeding responses by free-ranging golden snub-nosed monkeys (Rhinopithecus roxellana) inhabiting high altitude temperate forests where they experience a substantial difference in ambient temperature in cold winters vs. warmer springs. The monkeys had free access to natural foods throughout the year, and to ensure that any seasonal differences in nutrient intake were due to homeostatic compensation and not constraints on food availability, we studied the monkeys during periods in which they were provisioned with the same amount of supplementary foods in winter and spring. 3. Thermoregulatory energy costs in winter and spring were calculated using partitional calorimetric estimations of convective and radiative heat loss obtained from thermal imaging of free-ranging monkeys in situ. Daily nutrient intakes were measured using continuous focal follows (average 6.9 h/day) of free-ranging individuals (27 in spring and 28 in winter). 4. We used a nutritional geometry framework to integrate these data and test three predictions: i. In order to remain thermoneutral (balance heat loss with heat expenditure), golden snub-nosed monkeys decrease daily energy consumption during the spring compared to winter, ii. Decreased energy intake is accomplished specifically by reducing intake of the primary energetic nutrients, carbohydrate and lipid, relative to protein, and iii. The seasonal reduction in ingested fat and carbohydrate calories will quantitatively match the reduction in thermoregulatory costs in spring compared with winter. 5. Our results showed that energy intake in spring was reduced to almost half (55%) of that in winter. As predicted, this was achieved by specifically reducing fat and carbohydrate consumption with protein intake unchanged, by a quantity (326 kJ/mbm) that almost exactly matched the seasonal difference in the daily energetic costs of thermoregulation (329 kJ/mbm). 6. This is the first study to test for a match between nutrient-specific homeostatic compensation and environmentally-induced perturbations in nutrient requirements in free-ranging animals, and underpins the potential for the homeostasis framework to provide predictive power to ecological models.
Supplementary material 2 from: Carvalho WD, Rosalino LM, Godoy MSAM, Giorgete MF, Adania CH, Esbérard CEL (2019) Temporal activity of rural free-ranging dogs: implications for the predator and prey species in the Brazilian Atlantic Forest. NeoBiota 45: 55-74. https://doi.org/10.3897/neobiota.45.30645
: Data type: occurrence
Supplementary material 1 from: Carvalho WD, Rosalino LM, Godoy MSAM, Giorgete MF, Adania CH, Esbérard CEL (2019) Temporal activity of rural free-ranging dogs: implications for the predator and prey species in the Brazilian Atlantic Forest. NeoBiota 45: 55-74. https://doi.org/10.3897/neobiota.45.30645
: Data type: occurrence
Supplementary material 4 from: Carvalho WD, Rosalino LM, Godoy MSAM, Giorgete MF, Adania CH, Esbérard CEL (2019) Temporal activity of rural free-ranging dogs: implications for the predator and prey species in the Brazilian Atlantic Forest. NeoBiota 45: 55-74. https://doi.org/10.3897/neobiota.45.30645
: Data type: occurrence
Supplementary material 3 from: Carvalho WD, Rosalino LM, Godoy MSAM, Giorgete MF, Adania CH, Esbérard CEL (2019) Temporal activity of rural free-ranging dogs: implications for the predator and prey species in the Brazilian Atlantic Forest. NeoBiota 45: 55-74. https://doi.org/10.3897/neobiota.45.30645
: Data type: statistical data
Data from: Diurnal body temperature patterns in free-ranging populations of two southern African arid-zone nightjars
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Data from: Age-graded dominance hierarchies and social tolerance in packs of free-ranging dogs
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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.