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33 results for “egg temperature”
The roles of temperature, nest predators and information parasites for geographical variation in egg covering behaviour of tits (Paridae)
<p><strong>Aim</strong>: Nest building is widespread among animals. Nests may provide receptacles for eggs, developing offspring and the parents, and protect them from adverse environmental conditions. Nests may also indicate the quality of the territory and its owner and can be considered as an extended phenotype of its builder(s). Nests may, thus, function as a sexual and social signal. Here, we examined ecological and abiotic factors—temperature, nest predation and interspecific information utilization—shaping geographical variation in a specific nest structure—hair and feather cover of eggs— and its function as an extended phenotype before incubation in great (Parus major) and blue tits (Cyanistes caeruleus) across Europe. We also tested whether egg covering is associated with reproductive success of great tits.</p> <p><strong>Location</strong>: Fourteen different study sites and 28 populations across Europe.</p> <p><strong>Taxon</strong>: Parus major, Cyanistes caeruleus.</p> <p><strong>Methods</strong>: We recorded clutch coverage estimates and collected egg covering nest material from the tit nests. We also measured nest specific breeding parameters and phenotypic measurements on adults. We tested whether mean spring temperatures, nest predation rates and flycatcher (Ficedula spp) densities in the study areas explain the large-scale geographical variation of clutch coverage and reproductive success of tits.</p> <p><strong>Results</strong>: The degree of egg coverage of great tits increased with lower mean spring temperature, higher nest predation rate and higher flycatcher density. We did not find egg covering of blue tits to be associated with any of the ecological or abiotic factors. Moreover, egg covering of great tits was not associated with reproductive success in our cross-sectional data, yet a rigorous assessment of fitness effects would require long-term data.</p> <p><strong>Main conclusions</strong>: Our findings suggest that, in great tits, egg covering may simultaneously provide thermal insulation against cold temperatures during egg-laying in spring and also represent a counter-adaptation to reduce information parasitism by flycatchers and nest predation. Hence, geographical variation in interspecific interactions, and consequently in co-evolutionary processes, may affect the evolution of nest characteristics besides environmental conditions.</p>
Open-cup nesters in the Kalahari: incubation and egg-shading behaviour in passerines cannot be detected with temperature dataloggers during hot periods.
<p>The dataset includes the raw data and R scripts necessary to reproduce the analyses and figures explained in the manuscript "<span>Open-cup nesters in the Kalahari: incubation and egg-shading behaviour in passerines cannot be detected with temperature dataloggers during hot periods</span>"<strong>.</strong></p> <p>This dataset includes:</p> <p>- README.docx: Complete explanation of the different raw data used for the statistical analyses, together with the link to the R script where data is analyzed. We recommend to read this document before diving into the data and scripts.</p> <p>- Project data & code: Two separate folders for raw data and code.</p> <p> </p>
The roles of temperature, nest predators and information parasites for geographical variation in egg covering behaviour of tits (Paridae)
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Data from: Pipefish embryo oxygenation, survival and development: egg size, male size and temperature effects
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Data from: Modeling winter moth Operophtera brumata egg phenology: nonlinear effects of temperature and developmental stage on developmental rate
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Data from: Experimental increase in temperature affects eggshell thickness, and not egg mass, eggshell spottiness or egg composition in the great tit (Parus major)
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Data from: Free‐moving artificial eggs containing temperature loggers reveal remarkable within‐clutch variance in incubation temperature
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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.
Data from: Effect of temperature on oviposition behavior and egg load of blow flies (Diptera: Calliphoridae)
Making optimal oviposition decisions is especially important for female carrion colonizing insects whose larvae often depend on ephemeral resources. Oviposition can be influenced by a variety of factors, including temperature. The aim of this study was to investigate the effects of temperature on the oviposition behavior and egg load of two blow fly species native to southern Ontario: Phormia regina Meigen and Lucilia sericata Meigen (Diptera: Calliphoridae). Using fetal pig carcasses as an oviposition substrate, we assessed the length of time until the first oviposition event, preferred oviposition sites, and the total number of eggs oviposited. For each of the two species, five different temperature treatments ranging from 15° to 35°C were used. Temperature influenced time to the first oviposition event, as well as the number of eggs deposited by L. sericata and P. regina. As temperature increased, oviposition occurred faster with more eggs deposited for these two species. Female P. regina, in particular, demonstrated a higher egg load with increasing temperature. Differences in optimal temperatures for reproduction, including egg load and oviposition, may be a mechanism driving seasonal temporal resource partitioning leading to species co-existence utilizing ephemeral resources.
Data from: Low evolutionary potential for egg-to-adult viability in Drosophila melanogaster at high temperatures
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Data from: Effect of temperature on oviposition behavior and egg load of blow flies (Diptera: Calliphoridae)
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Data from: δ18O-derived incubation temperatures of oviraptorosaur eggs
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Maternal exposure to high temperature in fish induces intergenerational emotional and cognitive disorders, associated with dysregulation of neurodevelopment genes in eggs and progeny
GEO Series GSE113377. Oncorhynchus mykiss. 30 samples. Type: Expression profiling by array.
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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.