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136 results for “temperature-dependence”
Temperature-dependence of liverwort diversification: Cool origin and hot hotspots
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Temperature-dependent interspecific interference alters pygmy backswimmer predation on water fleas
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Temperature-dependent competitive outcomes between the fruit flies Drosophila santomea and D. yakuba
<p>We use these data to test whether temperature can indirectly affect the fitness of <i>Drosophila santomea</i> and <i>D. yakuba</i> by altering interspecific competitive outcomes. We show that, when raised in isolation, both <i>D. santomea</i> and <i>D. yakuba</i> display similar variation in relative fitness across temperatures of 18°C, 22°C, and 25°C. However, <i>D. santomea</i> has higher fitness than <i>D. yakuba</i> when experiencing interspecific competition at 18°C, while the inverse is true at 25°C. Patterns of fitness across thermal and competitive environments therefore indicate that the outcome of interspecific competition varies with temperature. We then use a 'coexistence' experiment to show that <i>D. santomea</i> is rapidly (within 8 generations) extirpated when maintained with <i>D. yakuba</i> at 25°C. By contrast, <i>D. santomea</i> remains as (or more) abundant than <i>D. yakuba</i> over the course of ~10 generations when maintained at 18°C. Results provide an example of how the thermal environment can affect interspecific competition and suggest that some species may become more prone to extinction under scenarios of climate change through indirect effects of the thermal environment on competitive advantages between species.</p>
Temperature-dependent effects of sea-louse infestation on juvenile Atlantic salmon
<p>Infectious diseases are key drivers of wildlife populations and agriculture production, but whether and how climate change will influence disease impacts remains controversial. One of the critical knowledge gaps that prevents resolution of this controversy is a lack of high-quality experimental data, especially in marine systems of significant ecological and economic consequence. Here, we performed a manipulative experiment in which we tested the temperature-dependent effects on Atlantic salmon (<i>Salmo salar</i>) of sea lice (<i>Lepeophtheirus salmonis</i>) – a parasite that can depress the productivity of wild-salmon populations and the profits of the salmon-farming industry. We explored sea-louse impacts on their hosts across a range of temperatures (10, 13, 16, 19, and 22 °C) and infestation levels (zero, 'low' (mean abundance ± SE = 1.6 ± 0.1 lice per fish), and 'high' infestation (6.8 ± 0.4 lice per fish)). We found that the effects of sea lice on the growth rate, condition, and survival of juvenile Atlantic salmon all worsen with increasing temperature. Our results provide a rare empirical example of how climate change may influence the impacts of marine disease in a key social-ecological system. These findings underscore the importance of considering climate-driven changes to disease impacts in wildlife conservation and agriculture. This Dryad submission includes the growth-rate, condition, and survival data for the manuscript entitled "Increasing temperatures accentuate negative fitness consequences of a marine parasite" by Sean C. Godwin, Mark D. Fast, Anna Kuparinen, Kate E. Medcalf, and Jeffrey A. Hutchings. </p>
Maternal provisioning and fluctuating thermal regimes enhance immune response in a reptile with temperature-dependent sex determination
<p>The Charnov-Bull model of differential fitness is often used to explain the evolution and maintenance of temperature-dependent sex determination (TSD). Most tests of the model focus on morphological proxies of fitness, such as size traits, whereas early life physiological traits that are closely related to lifetime fitness might provide a framework for generalising the Charnov-Bull model across taxa. One such trait is the strength of early life immune response, which is strongly linked to early life survival and fitness. Here, we manipulate temperature, variance in temperature, and sex to test the Charnov-Bull model using a physiological trait, immune system strength, in the snapping turtle (<i>Chelydra serpentina </i>L. 1758). We find no evidence of sex-specific differences in bactericidal capacity of hatchling blood, and no evidence that mean temperature influences bactericidal capacity. However, we find that fluctuating incubation temperature (i.e., a more naturalized incubation regime) is associated with a greater bactericidal capacity compared to constant temperature incubation. We also find that egg mass, a proxy for maternal provisioning, is positively associated with bactericidal capacity. Our findings suggest that the evolution of temperature-dependent sex determination in reptiles is unrelated to our measure early-life innate immunity. Our study also underlines how immune response is condition-dependent in early life, and questions the biological relevance of constant temperature incubation in experimental studies on ectotherm development.</p>
Data from: Seasonality and temperature-dependent flight dispersal of Triatoma infestans (Hemiptera: Reduviidae) and other vectors of Chagas disease in western Argentina
Flight dispersal of Triatominae is affected by climatic conditions and determines the spatiotemporal patterns of house invasion and transmission of Trypanosoma cruzi Chagas (Kinetoplastida: Trypanosomatidae). We investigated the detailed time structure and temperature dependencies of flight occurrence of Triatoma infestans Klug (Hemiptera: Reduviidae) and other triatomine species in a rural village of western Argentina by taking advantage of the attraction of adult triatomines to artificial light sources. Most of the village's streetlight posts were systematically inspected for triatomines twice between sunset and midnight over 425 nights in the spring–summer seasons of 1999–2002, an unprecedented light-trap sampling effort for any triatomine species. In total, 288 adults were captured, including 122 Triatoma guasayana Wygodzinsky and Abalos, 89 T. infestans, 72 Triatoma eratyrusiformis Del Ponte, and 5 Triatoma garciabesi Carcavallo et al. Adult sex ratios were balanced in T. infestans and strongly male-biased in other species. Nearly all flight-dispersing triatomines were caught when temperatures at sunset were >20 °C (range, 16.6–31.7 °C), suggesting a putative threshold around 17–18 °C. Triatomine catches were rare on rainy days. Logistic regression analysis revealed that the proportion of nights in which at least an adult T. infestans was caught increased highly significantly with increasing temperature at sunset and was modified by collection month, with greater catches in early spring and no sex differential. This study confirms that spring represents a previously overlooked, important dispersal period of T. infestans, and shows large variations among and within Triatominae in their temporal patterns of flight occurrence, abundance, and sex ratio.
Data from: Temperature-dependent oxygen limitation and the rise of Bergmann's Rule in species with aquatic respiration
Bergmann's Rule is the propensity for species-mean body size to decrease with increasing temperature. Temperature-dependent oxygen limitation has been hypothesized to help drive temperature–size relationships among ectotherms, including Bergmann's Rule, where organisms reduce body size under warm oxygen-limited conditions, thereby maintaining aerobic scope. Temperature-dependent oxygen limitation should be most pronounced among aquatic ectotherms that cannot breathe aerially, as oxygen solubility in water decreases with increasing temperature. We use phylogenetically-explicit analyses to show that species-mean adult size of aquatic salamanders with branchial or cutaneous oxygen uptake becomes small in warm environments and large in cool environments, whereas body size of aquatic species with lungs (i.e., that respire aerially), as well as size of semi aquatic and terrestrial species do not decrease with temperature. We argue that oxygen limitation drives the evolution of small size in warm aquatic environments for species with aquatic respiration. More broadly, the stronger decline in size with temperature observed in aquatic vs terrestrial salamander species mirrors the relatively strong plastic declines in size observed previously among aquatic vs terrestrial invertebrates, suggesting that temperature-dependent oxygen availability can help drive patterns of plasticity, micro- and macroevolution.
Data from: Stay tuned: active amplification tunes tree-cricket ears to track temperature-dependent song frequency
Tree cricket males produce tonal songs, used for mate attraction and male–male interactions. Active mechanics tunes hearing to conspecific song frequency. However, tree cricket song frequency increases with temperature, presenting a problem for tuned listeners. We show that the actively amplified frequency increases with temperature, thus shifting mechanical and neuronal auditory tuning to maintain a match with conspecific song frequency. Active auditory processes are known from several taxa, but their adaptive function has rarely been demonstrated. We show that tree crickets harness active processes to ensure that auditory tuning remains matched to conspecific song frequency, despite changing environmental conditions and signal characteristics. Adaptive tuning allows tree crickets to selectively detect potential mates or rivals over large distances and is likely to bestow a strong selective advantage by reducing mate-finding effort and facilitating intermale interactions.
Fig. 1 in The Morphology and Temperature-dependent Development of Mylabris phalerata Pallas (Coleoptera: Meloidae)
Fig. 1. Developmental stages of Mylabris phalerata. A: Egg (2.4 mm); B: L1 (2.6 mm); C: L2 (5.1 mm); D: L3 (13.7 mm); E: L4 (22.4 mm); F: L5 (29.2 mm); G: Pupa (30.1 mm); H: Adult (31.2 mm).
Supplementary material 3 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 3 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 2 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 2 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 4 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 4 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 5 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 5 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 7 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 7 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 6 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 6 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 1 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Supplementary material 1 from: Tanaka S (2024) Temperature-dependent phototaxis in overwintering adults of the grasshopper Patanga japonica (Orthoptera, Acrididae). Journal of Orthoptera Research 33(1): 71-86. https://doi.org/10.3897/jor.33.102749
Temperature-dependent responses to light and nutrients in phytoplankton
<p>These files contain all data necessary to create the figures published in the study "Temperature-dependent responses to light and nutrients in phytoplankton"</p> <ul> <li>The uploaded files contain all T-scripts and tables used for the analyses of this study</li> <li>All data needed for the R-scripts are available in the folder '<em>RTables'</em></li> <li>A<em> READMe</em> file that descripes all data files is avalable in the ZIP file</li> </ul> <ol> <li>R-scripts "a-growthrates_RFU.R": Contains the calculation of the maximum linear growth rate using theRFU measurements (needed table is "incubation.txt")</li> <li>R-script: "b_gamlss_growthrates_RFU.R": We used a GAMLSS to search for a model that best described the observed growth rates and used a null model that predicts additive effect on growth (needed table is "growthrates_RFUbased.txt") - generates data for Figure 3 and Figure 3, and Table 2</li> <li>R-script "c_plots.R": Contains all R codes to generate all figures </li> <li>R-script "d_gamlss_growthrates_OD.R": Contains the same statistical analyses (GAMLSS) as used for the results of this study, but this time with the growth rates based on Optical Density data and RFU data (for appendix).</li> </ol>
Primary data for "Temperature-dependence of the clear-sky feedback in radiative-convective equilibrium"
<p>Primary data for the manuscript "Temperature-dependence of the clear-sky feedback in radiative-convective equilibrium".</p> <p>The archive is described in more detail in the enclosed README file.</p>
Phonon Properties and Lattice Dynamics of Two- and Tri-Layered Lead Iodide Perovskites Comprising Butylammonium and Methylammonium Cations—Temperature-Dependent Raman Studies
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Supporting data of "Temperature-dependent dynamics of energy stores in Drosophila" article
<p>The data generated in the study: Knoblochová, D., Dharanikota, M., Gáliková, M., and Klepsatel, P.: Temperature-dependent dynamics of energy stores in Drosophila.</p>
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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
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