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43 results for “stress behaviour”
Elevated temperature effects on animal personality: hormonal stress response underlying behavioural differences in the American bullfrog
<p>Dataset for research paper submitted to Animal Behaviour</p> <p>Behavioural_data.csv: raw data for how individual bullfrogs performed in six different trials on an 8-arm maze before and after they were submitted to thermal stress. Behaviours analyzed: movements against the wall of the maze, posture changes, total ambulatory distance (m), and time on the centre of the arena (s).</p> <p>Hormone_data.csv: raw hormone (corticosterone and testosterone) data collected from individual bullfrogs in four different time points: baseline, 12 hours after stress, 24 days after stress, and 47 days after stress.</p> <p>Mass_data.csv: raw mass data collected from individual bullfrogs at the beginning and end of the experiment. SVL = snout-vent length. Body index is calculated as the residuals of a linear regression between mass as dependent variable and SVL as independent variable.</p>
Data and code for "Sick and Tired: Sickness Behaviour, Polyparasitism and Food Stress in a Gregarious Mammal"
<p>Data and R code for used for "Sick and Tired: Sickness Behaviour, Polyparasitism and Food Stress in a Gregarious Mammal"</p>
Data from: Developmental behavioural plasticity and DNA methylation patterns in response to predation stress in Trinidadian guppies
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RECOVERY TIME FROM PRIOR SUBLETHAL HEAT STRESS INFLUENCES SUBSEQUENT HEATWAVE-DRIVEN MORTALITY AND BEHAVIOUR
<ol> <li>Rising global ocean temperatures are influencing the incidences of extreme thermal events – including marine heatwaves (MHWs) – which, in turn, are affecting marine organisms physiologically. The consequence of acute stress depends, in part, on the temporal pattern of exposure. Such influence results as the molecular mechanisms triggered by stressful conditions are energetically costly, and therefore their activation can help or hinder an organism faced with additional stress depending on relative timing of exposure.</li> <li>Here we test the effect of consecutive MHWs separated by varying lengths of recovery on the shallow subtidal gastropod species, <em>Monodonta labio. </em>We exposed <em>M. labio </em>to two separate heatwave events (32 ºC) separated by either a 5-day, 10-day or 15-day recovery period (28 ºC) and assessed the effects on mortality, behaviour (attempt to right, success righting), and physiological performance (oxygen consumption rates) after each time period.</li> <li>While some mortality was experienced in the first heatwave event, it was significantly greater in the second event with a trend toward more mortality in the longer than shorter recovery period treatments. Over the duration of the experiment, longer recovery periods were associated with greater overall cumulative mortality. In terms of behaviour, although there was no change in attempt to right across the experimental periods, the proportion to successfully complete the behaviour decreased following the second heatwave. Interestingly, during the second heatwave no gastropods in the 5-day recovery treatment successfully righted, with some success observed for those with a longer recovery period. Despite these changes in mortality and behaviour, oxygen consumption rates remained consistent across treatments and the experimental period, indicating organisms did not adjust this process.</li> <li>Together, our results highlight that where a MHW event has sublethal effects, this could modify the response organisms show to a subsequent MHW. Moreover, the influence of this earlier MHW will be dependent upon the duration of the intervening recovery period afforded to organisms. Consequently, it will be important to consider repeat events, and the duration of recovery between them, when considering the effects of altered heatwave patterns driven by global climate change.</li> </ol>
Genetic variance for behavioural 'predictability' of stress response
<p>Genetic factors underpinning phenotypic variation are required if natural selection is to result in adaptive evolution. However, evolutionary and behavioural ecologists typically focus on variation among individuals in their average trait values, and seek to characterise genetic contributions to this. As a result, less attention has been paid to if and how genes could contribute towards within-individual variance, or trait "predictability". In fact, phenotypic 'predictability' can vary among individuals, and emerging evidence from livestock genetics suggests this can be due to genetic factors. Here we test this empirically using repeated measures of a behavioural stress response trait in a pedigreed population of wild-type guppies. We ask (1) whether individuals differ in behavioural predictability, and (2) whether this variation is heritable and so evolvable under selection. Using statistical methodology from the field of quantitative genetics, we find support for both hypotheses and also show evidence of a genetic correlation structure between the behavioural trait mean and individual predictability. We show that investigating sources of variability in trait predictability is statistically tractable, and can yield useful biological interpretation. We conclude that, if widespread, genetic variance for 'predictability' will have major implications for the evolutionary causes and consequences of phenotypic variation. </p>
Natural and anthropogenic sources of habitat variation influence exploration behaviour, stress response, and brain morphology in a coastal fish
<p>1. Evolutionary ecology aims to better understand how ecologically important traits respond to environmental heterogeneity. Environments vary both naturally and as a result of human activities, and investigations that simultaneously consider how natural and human-induced environmental variation affect diverse trait types grow increasingly important as human activities drive species endangerment.</p> <p>2. Here, we examine how habitat fragmentation and structural habitat complexity, affect disparate trait types in Bahamas mosquitofish (<em>Gambusia hubbsi</em>) inhabiting tidal creeks. We tested a priori predictions for how these factors might influence exploratory behaviour, stress reactivity, and brain anatomy.</p> <p>3. We examined approximately 350 adult Bahamas mosquitofish from seven tidal creek populations across Andros Island, The Bahamas that varied in both human-caused fragmentation (three fragmented, four unfragmented) and natural habitat complexity (e.g. 5-fold variation in rock habitat).</p> <p>4. Populations that had experienced severe human-induced fragmentation, and thus restriction of tidal exchange from the ocean, exhibited greater exploration of a novel environment, stronger physiological stress responses to a mildly stressful event, and smaller telencephala (relative to body size). These changes matched adaptive predictions based mostly on 1) reduced chronic predation risk and 2) decreased demands for navigating tidally dynamic habitats. Populations from sites with greater structural habitat complexity showed a higher propensity for exploration and a relatively larger optic tectum and cerebellum. These patterns matched adaptive predictions related to increased demands for navigating complex environments.</p> <p>5. Our findings demonstrate environmental variation, including recent anthropogenic impacts (<50 years), can significantly affect complex, ecologically important traits. Yet trait-specific patterns may not be easily predicted, as we found strong support for only six of 12 predictions. Our results further highlight the utility of simultaneously quantifying multiple environmental factors—e.g. had we failed to account for habitat complexity, we would not have detected effects of fragmentation on exploratory behaviours. These responses, and their ecological consequences, may be complex: rapid and adaptive phenotypic responses to anthropogenic impacts can facilitate persistence in human-altered environments, but may come at a cost of population vulnerability if ecological restoration were to occur without consideration of the altered traits. </p>
Nutritional stress exacerbates impact of a novel insecticide on solitary bees' behaviour, reproduction and survival
<p>Pesticide exposure<span> and food stress are major threats to bees, but their potential synergistic impacts under field-realistic conditions remain poorly understood and are not considered in current pesticide risk assessments. We conducted a semi-field experiment to examine the single and interactive effects of the novel insecticide flupyradifurone (FPF) and nutritional stress on fitness proxies in the solitary bee <em>Osmia bicornis</em>. Individually marked bees were released into flight cages with monocultures of either buckwheat, wild mustard or purple tansy, which were assigned to an insecticide treatment (FPF or control) in a crossed design. Nutritional stress, which was high in bees foraging on buckwheat, intermediate on wild mustard and low on purple tansy, modulated the impact of insecticide exposure. Within the first day after application of FPF, mortality of bees feeding on buckwheat was 29 times higher compared to control treatments, while mortality of FPF exposed and control bees was similar in the other two plant species. Moreover, we found negative synergistic impacts of FPF and nutritional stress on offspring production, flight activity, flight duration, and flower visitation frequency. These results reveal that environmental policies and risk assessment schemes that ignore interactions among anthropogenic stressors will fail to adequately protect bees and the pollination services they provide.</span></p>
static stress-strain behaviour of hardened and tempered steel 52100 (100Cr6)
<p>this file contains the recorded data (time, nominal stress, strain, actuator position) of a tensile test as long as the used strain gauge worked</p>
Signal value of stress behaviour
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Natural and anthropogenic sources of habitat variation influence exploration behaviour, stress response, and brain morphology in a coastal fish
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Genetic variance for behavioural ‘predictability’ of stress response
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Nutritional stress exacerbates impact of a novel insecticide on solitary bees’ behaviour, reproduction and survival
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Sick of attention: The effect of a stress-related disease on juvenile green sea turtle behaviour in the face of intense and prolonged tourism
<p><span><span><span><span><span><span><span><span><span><span><span>Anthropogenic activities are increasingly linked to emerging diseases that cause mortality across many taxa. Human interference through ecotourism, in particular, can increase the stress levels of wild populations and promote the spread of disease. In Akumal Bay, Mexico, green sea turtles (<i>Chelonia mydas</i>) are increasingly infected with fibropapillomatosis (FP), an infectious disease associated with stress-induced immunosuppression linked to high human density, which is particularly high in this area because of intense and prolonged ecotourism. To examine if FP might be associated with behavioural indicators of stress and varying levels of tourist pressure, we observed the behaviour of turtles and the number of tourists through 20-minute focal sampling periods from May to August 2017. We related disease presence and tourist pressure to several aspects of turtle behaviour, specifically feeding, resting, vertical movements (i.e., surfacing and diving), and evasive responses. Turtles that had FP engaged in fewer feeding periods, vertical movements, and evasive responses. Additionally, with increasing tourist pressure, all turtles spent less time engaging in vertical movements and had more evasive responses. Our results suggest that the presence of FP affects green sea turtle behavior, potentially increasing their exposure to tourists. Sick and healthy turtles appear to react differently to tourists, suggesting that FP weakens behavioural responses to tourist pressure. Future management strategies should consider regulating tourist pressure on turtles to reduce the incidence and progression of FP.</span></span></span></span></span></span></span></span></span></span></span></p>
Dataset from The effect of visitors on stress-related behaviour of zoo-housed red-faced spider monkeys (Ateles Paniscus) compared in the inside and outside compartment of the enclosure
<p>Animals held in captivity often endure more stress than wild congeners do, which might be harmful for their health and wellbeing. This stress is often expressed by showing stereotypic behaviour. Previous studies showed that visitors can have a negative impact on the stress levels of zoo-housed animals, referred to by the term ‘visitor effect’. The visitor effect is found to be strong in arboreal primate species, such as spider monkeys.</p> <p>The current study examined the effect of visitors on the stress-related behaviour of red-faced spider monkeys (<em>Ateles Paniscus</em>) housed at ARTIS Amsterdam Royal Zoo. Two visitor variables were assessed; number of visitors and sound volume. Additionally, this study examined whether there was a difference in visitor effect in the inside and outside compartment of the enclosure since these exhibits differ strongly in design.</p> <p>Behavioural observations were conducted for 3 weeks daily, during which all behaviour displayed by the spider monkeys was noted, along with the number of visitors present, the level of sound (in decibel) and the location of observation.</p> <p>This study demonstrated that an increase in average level of decibel led to an increase in stereotypic behaviour. Additionally, spider monkeys were found to display more stereotypic behaviour in the outside compartment of their enclosure. However, this study did not find the number of visitors to have an influence on the stress-related behaviour. These results suggest that visitor noise can have a negative effect on the stress levels of red-faced spider monkeys and that this effect is dependent on the exhibit design.</p> <p>This study hopefully provides more insight into the visitor effect by assessing the influence of two important visitor variables. These insights might improve future designs of zoo enclosures, thus enhancing animal welfare. However, future research is needed to further assess the cause of stress in zoo-housed animals. </p>
Internet-Based Cognitive Behavioural Program for Managing Stress With IBD: An RCT
ClinicalTrials.gov study NCT04700917. IPD Sharing: NO. Countries: 1. Publications: 1.
Influence of Medical Student Coping Behaviour Types on Health Related Behaviour and Stress Level on the Day of OSCE
ClinicalTrials.gov study NCT05393206. IPD Sharing: Not stated. Countries: 1. Publications: 1.
The Family Stress Study - Chronic Stress and Child Adiposity: Testing a Bio-behavioural Model
ClinicalTrials.gov study NCT05534711. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Grip&Health: Behavioural Intervention to Reduce Smoking, Stress and Improve Financial Health in Low-SES in Rotterdam
ClinicalTrials.gov study NCT03553979. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Sick of attention: The effect of a stress-related disease on juvenile green sea turtle behaviour in the face of intense and prolonged tourism
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Data from: Do parasites and antioxidant availability affect begging behaviour, growth rate and resistance to oxidative stress?
Early-life trade-offs faced by developing offspring can have long-term consequences for their future fitness. Young offspring use begging displays to solicit resources from their parents and have been selected to grow fast to maximize survival. However, growth and begging behaviour are generally traded-off against self-maintenance. Oxidative stress, a physiological mediator of life-history trade-offs, may play a major role in this trade-off by constraining, or being costly to, growth and begging behaviour. Yet, despite implications for the evolution of life-history strategies and parent-offspring conflicts, the interplay between growth, begging behaviour and resistance to oxidative stress remains to be investigated. We experimentally challenged wild great tit (Parus major) offspring by infesting nests with a common ectoparasite, the hen flea (Ceratophyllus gallinae), and simultaneously tested for compensating effects of increased vitamin E availability, a common dietary antioxidant. We further quantified the experimental treatment effects on offspring growth, begging intensity and oxidative stress. Flea-infested nestlings of both sexes showed reduced body mass during the first half of the nestling phase but this effect vanished short before fledging. Begging intensity and oxidative stress of both sexes were unaffected by both experimental treatments. Feeding rates were not affected by the experimental treatments but parents of flea-infested nests fed nestlings with a higher proportion of caterpillars, the main source of antioxidants. Additionally, female nestlings begged significantly less than males in control nests, while both sexes begged at similar rates in vitamin E supplemented nests. Our study shows that a parasite exposure does not necessarily affect oxidative stress levels or begging intensity, but suggests that parents can compensate for negative effects of parasitism by modifying food composition. Furthermore, our results indicate that the begging capacity of the less competitive sex is constrained by antioxidant availability.
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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.