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123 results for “feral”
Data from: Housework or vigilance? Bilbies alter burrowing activity under threat of predation by feral cats
<p>Behavioral adjustments to predation risk not only impose costs on prey species themselves but can also have cascading impacts on whole ecosystems. The greater bilby (<em>Macrotis lagotis</em>) is an important ecosystem engineer, modifying the physical environment through their digging activity, and supporting a diverse range of sympatric species that use its burrows for refuge and food resources. The bilby has experienced severe decline over the last 200 years, and the species is now restricted to approximately 20% of its former distribution. Introduced predators, such as the feral cat (<em>Felis catus</em>), have contributed to this decline. We used camera traps to monitor bilby burrows at four sites in Western Australia, where bilbies were exposed to varying levels of cat predation threat. We investigated the impact of feral cats on bilby behavior at burrows, particularly during highly vulnerable periods when they dig and clear away soil or debris from the burrow entrance as they perform burrow maintenance. There was little evidence that bilbies avoided burrows that were visited by a feral cat; however, bilbies reduced the time spent performing burrow maintenance in the days following a cat visit (p=0.010). We found the risk posed to bilbies varied over time, with twice the cat activity around full moon compared with dark nights. Bilby burrows are such valuable resources for ecosystem functioning that bilby predation by feral cats, as well as even indirect impacts on bilby behavioral responses to perceived predation risk, together may have a substantial ecosystem impact.</p>
Data from: Targeted genome-wide SNP genotyping in feral horses using non-invasive fecal swabs
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Laying low: Rugged lowland rainforest preferred by feral cats in the Australian wet tropics
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Data from: Feral pigeon roosting and nesting occurrences in MRT viaduct expansion gaps and measured variables in Singapore
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Data from: Mesopredator release among invasive predators: controlling red foxes can increase feral cat density and alter their behaviour
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Data from: Grooming time parallels molt intensity in wild-caught feral Rock Pigeons
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Detections of feral cats on Matuwa between 2018 and 2021
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Contrasting seasonal patterns in diet and dung-associated invertebrates of feral cattle and horses in a rewilding area
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Feral swine genotypes and metadata used for identifying translocations in the United States
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A novel trophic cascade between cougars and feral donkeys shapes desert wetlands
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Data from: Housework or vigilance? Bilbies alter burrowing activity under threat of predation by feral cats
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Data from: Parasites, depredators, and limited resources as potential drivers of winter mortality of feral honeybee colonies in German forests
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Mixed ancestry from wild and domestic lineages contributes to the rapid expansion of invasive feral swine
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Reduced parasite burden in feral honeybee colonies
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Data from: Spatial strategies in non-territorial societies: How feral horses maintain boundaries with other groups
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Use of density-impact functions to inform and improve the environmental outcomes of feral horse management
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Dietary niche variation in an invasive omnivore: the effects of habitat on feral pig (Sus scrofa) resource use in Hawaiʻi
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Genomic regions associated with pseudorabies virus infection status in naturally infected feral swine (Sus scrofa)
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Causes and consequences of an unusually male-biased adult sex ratio in an unmanaged feral horse population
<p>1. The adult sex ratio (ASR) is important within ecology due to its predicted effects on behaviour, demography, and evolution, but research examining the causes and consequences of ASR bias have lagged behind studies of sex ratios at earlier life stages. Although ungulate ASR is relatively well-studied, exceptions to the usual female-biased ASR challenge our understanding of the underlying drivers of biased ASR, and provide an opportunity to better understand its consequences.</p> <p>2. Some feral ungulate populations, including multiple horse populations, exhibit unusually male-biased ASR. For example, research suggests that the feral horse (Equus ferus caballus) population on Sable Island, Nova Scotia, Canada, may exhibit a male-biased ASR. Such exceptions to the rule provide a valuable opportunity to reveal the contributions of environmental context and trait differences to ASR bias.</p> <p>3. We aimed to test for bias in Sable Island horse ASR, identify the demographic drivers of bias, and explore its demographic and social consequences. To do this, we used life-history, movement, and group membership information for hundreds of horses followed through a long-term individual-based study between 2007 and 2018.</p> <p>4. Sable Island horse ASR is male-biased, and this skew has increased over time, reaching 62% male in 2018. Our life table response experiment suggested that ASR skew was driven predominantly by male-biased adult survival. Further analyses pointed to sex-biased survival being driven by reduced female survival post-reproduction. Male-biased ASR was associated with reduced harem sizes, an increase in the number of social groups on the island, and reduced reproduction in young females.</p> <p>5. Our results support the idea that male-biased ASR in feral ungulate populations may be caused by a combination of high population density and high reproductive output. We suggest that female-biased mortality may be caused by females continuing to reproduce at high density, and thus being more susceptible to resource shortages. Thus, our results highlight the strong context-dependence of ASR. Furthermore, our work indicates the potential for ASR to substantially alter a population's social organisation. Such changes in social structure could have knock-on consequences for demography by altering the formation/stability of social relationships, or competition for matings.</p>
Bacterial dispersal and drift drive microbiome diversity patterns within a population of feral hindgut fermenters
<p>Studies of microbiome variation in wildlife often emphasize host physiology and diet as proximate selective pressures acting on host-associated microbiota. In contrast, microbial dispersal and ecological drift are more rarely considered. Using amplicon sequencing, we characterized the bacterial microbiome of adult female (<i>n</i> = 86) Sable Island horses (Nova Scotia, Canada) as part of a detailed individual-based study of this feral population. Using data on sampling date, horse location, age, parental status, and local habitat variables, we contrasted the ability of spatiotemporal, life history, and environmental factors to explain microbiome diversity among Sable Island horses. We extended inferences made from these analyses with both phylogeny-informed and phylogeny-independent null modeling approaches to identify deviations from stochastic expectations. Phylogeny-informed diversity measures were correlated with spatial and local habitat variables, but null modelling results suggested that heterogeneity in ecological drift, rather than differential selective pressures acting on the microbiome, was responsible for these correlations. Conversely, phylogeny-independent diversity measures were best explained by host spatial and social structure, suggesting that taxonomic composition of the microbiome was shaped most strongly by bacterial dispersal. Parental status was important but correlated with measures of β-dispersion rather than β-diversity (mares without foals had lower alpha diversity and more variable microbiomes than mares with foals). Our results suggest that between host microbiome variation within the Sable Island horse population is driven more strongly by bacterial dispersal and ecological drift than by differential selective pressures. These results emphasize the need to consider alternative ecological processes in the study of microbiomes.</p>
ScienceDex guides
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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.