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156 results for “Temperature Influence”
Data from: The influence of ecological and life history factors on ectothermic temperature-size responses: analysis of three Lycaenidae butterflies (Lepidoptera)
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Data from: Carbon isotopes of C3 herbs correlate with temperature on removing the influence of precipitation across a temperature transect in the agro-pastoral ecotone of Northern China
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Data from: The developmental race between maturing host plants and their butterfly herbivore – the influence of phenological matching and temperature
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Data from: Prey availability and ambient temperature influence carrion persistence in the boreal forest
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Data from: Parasite rearing and infection temperatures jointly influence disease transmission and shape seasonality of epidemics
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Data from: Temperature does not influence functional response of amphipods consuming different trematode prey
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Diet and temperature modify the relationship between energy use and ATP production to influence behaviour in zebrafish (Danio rerio)
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Burrow ambient temperature influences Helice crab activity and availability for migratory Red-crowned Cranes Grus japonensis
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Data from: Habitat, latitude, and body mass influence the temperature dependence of metabolic rate
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The relative influence of sea surface temperature anomalies on the benthic composition of an Indo-Pacific and Caribbean coral reef over the last decade
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Data from: Mean annual temperature influences local fine root proliferation in tropical montane wet forest
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Fig 1 from: Branson DH (2020) Influence of cold temperature and exposure time on egg overwintering survival in the white-whiskered grasshopper (Orthoptera: Acrididae). Journal of Orthoptera Research 29(1): 63-65. https://doi.org/10.3897/jor.29.46967
Fig 1 Proportional survival (mean ± SE) of white-whiskered grasshopper eggs by temperature (-20°C, -25°C, and 4°C control) and exposure time (48, 120, and 240 hours) treatments (8 replicates with 16 egg pods per replicate). No eggs survived in any exposure time treatment at -30°C and -35°C.
Using naturalistic incubation temperatures to demonstrate how variation in the timing and continuity of heat wave exposure influences phenotype
<p>Most organisms are exposed to bouts of warm temperatures during development, yet we know little about how variation in the timing and continuity of heat exposure influences biological processes. If heat waves increase in frequency and duration as predicted, it is necessary to understand how these bouts could affect thermally sensitive species, including reptiles with temperature-dependent sex determination (TSD). In a multi-year study using fluctuating temperatures, we exposed <i>Trachemys scripta</i> embryos to cooler, male-producing temperatures interspersed with warmer, female-producing temperatures (heat waves) that varied in either timing during development or continuity and then analyzed resulting sex ratios. We also quantified the expression of genes involved in testis differentiation (<i>Dmrt1</i>) and ovary differentiation (<i>Cyp19A1</i>) to determine how heat wave continuity affects the expression of genes involved in sexual differentiation. Heat waves applied during the middle of development produced significantly more females compared to heat waves that occurred just 7 days before or after this window, and even short gaps in the continuity of a heat wave decreased the production of females. Continuous heat exposure resulted in increased <i>Cyp19A1 </i>expression while discontinuous heat exposure failed to increase expression in either gene over a similar time course. We report that even small differences in the timing and continuity of heat waves can result in drastically different phenotypic outcomes. This strong effect of temperature occurred despite the fact that embryos were exposed to the same number of warm days during a short period of time, which highlights the need to study temperature effects under more ecologically relevant conditions where temperatures may be elevated for only a few days at a time. In the face of a changing climate, the finding that subtle shifts in temperature exposure result in substantial effects on embryonic development becomes even more critical.</p>
Supporting Information for "How erosion influence fault segmentation and earthquakes in thrust belts: Low-temperature thermochronology and fluvial shear stress analyses on the southern Longmen Shan, eastern Tibet"
<p>Supporting Information for</p> <p>How erosion influence fault segmentation and earthquakes in thrust belts: Low-temperature thermochronology and fluvial shear stress analyses on the southern Longmen Shan, eastern Tibet</p> <p>Yijia Ye<sup>1</sup>, Xibin Tan<sup>1, </sup>*, Yiduo Liu<sup>2</sup>, Feng Shi<sup>1</sup>, Yuan-Hsi Lee<sup>3</sup>, Michael A. Murphy<sup>2</sup>, Xiwei Xu<sup>4</sup></p> <ol> <li>State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, 100029, China</li> <li>Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, 77204-5007, USA</li> <li>Department of Earth and Environmental Sciences, National Chung-Cheng University, Chia-Yi, 62102, Taiwan</li> <li>Institute of Crustal Dynamics, China Earthquake Administration, Beijing, 100085, China</li> </ol> <p><em>* </em>Corresponding author. E-mail address: <a href="mailto:tanxibin@sina.com">tanxibin@sina.com</a></p> <p> </p> <p><strong>Contents of this file </strong></p> <p>Figures S1 and Table S1</p>
Data from: The influence of environmental gradients on individual behaviour: individual plasticity is consistent across risk and temperature gradients
1. The expression of individual behaviour as a function of environmental variation (behavioural plasticity) is recognised as a means for animals to modify their phenotypes in response to changing conditions. Plasticity has been studied extensively in recent years, leading to an accumulation of evidence for behavioural plasticity within natural populations. 2. Despite the recent attention given to studying individual variation in behavioural plasticity, there is still a lack of consensus regarding its causes and constraints. One pressing question related to this is whether individual plasticity carries over across temporal and environmental gradients. That is, are some individuals more plastic (responsive) than others in general? 3. Here, we examined the influence of temporal and environmental gradients on individual behavioural responses in a marine gastropod, Littoraria irrorata. We measured individual boldness repeatedly over time and in response to tidal cycle (high vs low an index of risk) and daily temperature fluctuations (known to affect metabolism), in a controlled field experiment. 4. On average, boldness increased from high to low tide and with increasing temperature but decreased marginally over time. Individuals also differed in their responses to variation in tide and temperature, but not over time. Those that were relatively bold at high tide (when predation risk is greater) were similarly bold at low tide, whereas shy individuals became much more 'bold' at low tide. Most notably, individuals that were more responsive to tide (and thus risk) were also more responsive to temperature changes, meaning that plasticity was correlated across contexts (r = 0.57) and that bolder individuals were least plastic overall. 5. This study provides a rare and possibly first example of consistency of individual behavioural plasticity across contexts, suggesting underlying physiology as a common mechanism, and raises the possibility of correlational selection on plasticity.
Data from: Process-based species pools reveal the hidden signature of biotic interactions amid the influence of temperature filtering
A persistent challenge in ecology is to tease apart the influence of multiple processes acting simultaneously and interacting in complex ways to shape the structure of species assemblages. We implement a heuristic approach that relies on explicitly defining species pools and permits assessment of the relative influence of the main processes thought to shape assemblage structure: environmental filtering, dispersal limitations and biotic interactions. We illustrate our approach using data on the assemblage composition and geographic distribution of hummingbirds, a comprehensive phylogeny and morphological traits. The implementation of several process-based species pool definitions in null models suggests that temperature, but not precipitation or dispersal limitation, acts as the main regional filter of assemblage structure. Incorporating this environmental filter directly into the definition of assemblage-specific species pools revealed an otherwise hidden pattern of phylogenetic evenness, indicating that biotic interactions might further influence hummingbird assemblage structure. Such hidden patterns of assemblage structure call for a reexamination of a multitude of phylogenetic- and trait-based studies that did not explicitly consider potentially important processes in their definition of the species pool. Our heuristic approach provides a transparent way to explore patterns and refine interpretations of the underlying causes of assemblage structure.
Data from: Growth trajectory influences temperature preference in fish through an effect on metabolic rate
Most animals experience temperature variations as they move through the environment. For ectotherms in particular, temperature has a strong influence on habitat choice. While well-studied at the species level, less is known about factors affecting the preferred temperature of individuals. Especially lacking is information on how physiological traits are linked to thermal preference and whether such relationships are affected by factors such feeding history and growth trajectory. This study examined these issues in the common minnow Phoxinus phoxinus, to determine the extent to which feeding history, standard metabolic rate (SMR) and aerobic scope (AS), interact to affect temperature preference. Individuals were either: 1) food-deprived for 21 days, then fed ad libitum for the next 74 days; or 2) fed ad libitum throughout the entire period. All animals were then allowed to select preferred temperatures using a shuttle-box, and then measured for SMR and AS at 10°C, estimated by rates of oxygen uptake. Activity within the shuttle-box under a constant temperature regime was also measured. In both food-deprived and control fish, SMR was negatively correlated with preferred temperature. The SMR of the food-deprived fish was elevated compared to the controls, probably due to the effects of compensatory growth, and so these growth-compensated fish preferred temperatures that were on average 2.85°C cooler than controls fed a maintenance ration throughout the study. Fish experiencing compensatory growth also displayed a large reduction in activity. In growth-compensated fish and controls, activity measured at 10°C was positively correlated with preferred temperature. Individual fish prefer temperatures that vary predictably with SMR and activity level, which are both plastic in response to feeding history and growth trajectories. Cooler temperatures probably allow individuals to reduce maintenance costs and divert more energy towards growth. A reduction in SMR at cooler temperatures, coupled with a decrease in spontaneous activity, would also allow individuals to increase surplus aerobic scope for coping with environmental stressors. In warming climates, however, aquatic ectotherms could experience frequent fluctuations in food supply with long-lasting effects on metabolic rate due to compensatory growth, while simultaneously having limited access to preferred cooler habitats.
Data from: Calcium interacts with temperature to influence Daphnia movement rates
Predicting the ecological responses to climate change is particularly challenging, because organisms might be affected simultaneously by the synergistic effects of multiple environmental stressors. Global warming is often accompanied by declining calcium concentration in many freshwater ecosystems. Although there is growing evidence that these changes in water chemistry and thermal conditions can influence ecosystem dynamics, little information is currently available about how these synergistic environmental stressors could influence the behaviour of aquatic organisms. Here, we tested whether the combined effects of calcium and temperature affect movement parameters (average speed, mean turning frequency and mean-squared displacement) of the planktonic Daphnia magna, using a full factorial design and exposing Daphnia individuals to a range of realistic levels of temperature and calcium concentration. We found that movement increased with both temperature and calcium concentration, but temperature effects became considerably weaker when individuals were exposed to calcium levels close to survival limits documented for several Daphnia species, signalling a strong interaction effect. These results support the notion that changes in water chemistry might have as strong an effect as projected changes in temperature on movement rates of Daphnia, suggesting that even sublethal levels of calcium decline could have a considerable impact on the dynamics of freshwater ecosystems.
Land-use induced changes in extreme temperature predominantly influenced by downward longwave radiation
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Figures 1-2 from: Chaves MF, Moura GJB, Tenório FCMA, Baptista JS, Lapa Neto CJC, Texeira VW, Texeira ÁAC (2017) Influence of rainfall and temperature on the spermatogenesis of Leptodactylus macrosternum (Anura: Leptodactylidae). Zoologia 34: 1-7. https://doi.org/10.3897/zoologia.34.e20782
Figures 1-2 - Climatological variations in the Horto Florestal Olho d'Água da Bica (HFODB) in the municipality of Cuité, state of Paraíba, Brazil between January and December 2013: (1) total rainfall (mm); (2) mean and standard deviation of the temperature (°C).
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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.