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48 results for “nest size”
Fig. 1 in The Influence Of Nest Size On Heat Loss Of Penduline Tit Eggs
Fig. 1. Changes in internal egg temperatures (mean °C) during trials with Penduline Tit nests (treatments: ambient temperature – clutch size)
Fig. 2 in The Influence Of Nest Size On Heat Loss Of Penduline Tit Eggs
Fig. 2. Effects of nest thickness on terminal temperatures in relation to ambient temperature and clutch size. Each symbol represents one nest (N= 20 nests, all nests were measured in all treatments). We used least-squares regression to estimate the best fit to each pair of treatments separately (regression equations, 25°C & 9 eggs: terminal temperature = 27.64 + 0.05 × nest thickness; 25°C & 3 eggs: terminal temperature = 27.56 + 0.01 × nest thickness; 10°C & 9 eggs: terminal temperature = 16.29 + 0.19 × nest thickness; 10°C & 3 eggs: terminal temperature = 15.66 + 0.08 × nest thickness)
Fig. 1. Residentmalependulinetitsreacttoplaybacksongandadummypendulinetit aroundtheirnest. Behaviouralresponsesincludedattacking, i.e in Acoustic Signalling In Eurasian Penduline Tits Remiz Pendulinus: Repertoire Size Signals Male Nest Defence
Fig. 1. Residentmalependulinetitsreacttoplaybacksongandadummypendulinetit aroundtheirnest. Behaviouralresponsesincludedattacking, i.e. peckingatthedummy, as
Fig. 2 in Acoustic Signalling In Eurasian Penduline Tits Remiz Pendulinus: Repertoire Size Signals Male Nest Defence
Fig. 2. SonogramsofsometypicalsyllabletypesofEurasianpendulinetits. Songbouts mayconsistofvarioussyllables (topandbottomsonograms) ormayincludemonotone
Fig. 3 in Acoustic Signalling In Eurasian Penduline Tits Remiz Pendulinus: Repertoire Size Signals Male Nest Defence
Fig. 3. Approachdistance (a) and % behaviouralresponses (b) towardsanintruderinre- lationtotheresidentmale'sownrepertoiresize. Behaviouralresponsesincludedcalling, singing, tailquiveringandattacking. Opencirclesindicateresponsesofchallengedresi- dentsonsmallrepertoireplayback, whereasfilledcirclesindicatethesamemales' respons- esonlargerepertoireplayback. Notethatpointsshownontheupperhalfregionof (a) represent males that were mostly present very close to their nest (15 m from the stimulus,
Long-term observation of the egg and chick size in the nests of Larus ichthyaetus in Lake Chany,West Siberia, Russia
<p>Data on long-term observation and morphological study of the eggs of the great black-headed gull<em> Larus ichthyaetus </em>in the nesting colonies of gulls on islands of Lake Chany. Russia. Data on long-term observation and morphological study of the eggs (Data S1) and chick (Data S2) of the great black-headed gull<em> Larus ichthyaetus </em>in the nesting colonies of gulls on islands of Lake Chany, Russia</p> <p> </p> <p><strong>Abstract </strong></p> <p>This data set describes the long-term observation and morphological study of the eggs of the great black-headed gull Larus ichthyaetus in the gull nesting colonies on the islands of Lake Chany. Lake Chany is located in the Baraba forest-steppe of the West Siberian Plain, Russia, between the Ob and Irtish rivers. Lake Chany is protected by the Ramsar Convention on the Wetlands of International Importance, indicating that the lake is an important site for migratory birds, including L. ichthyaetus. This dataset contains the size and fate of all eggs, as well as the size of hatched chicks in 1164 observed L. ichthyaetus nests from 1993 to 2003.</p>
Egg and chick size in the nests of common gulls in Lake Chany, West Siberia, Russia from 1993 to 2011
<p>A long-term study of breeding ecology of gulls has been carried in the area of Lake Chany. Lake Chany is located in the Baraba forest-steppe of the West Siberian Plain, Russia, between the Ob and Irtysh rivers. The Lake is protected by the Ramsar Convention on the Wetlands of International Importance, indicating that the lake is an important site for migrating and breeding birds, including the Common gull <em>Larus canus </em>(Linnaeus, 1758). We provided data on the size and fate of all eggs as well as the size of hatched chicks in Common gull nests from 1993 to 2011. The data can be used to assess how environmental changes caused by human activity, including global warming, affect the reproduction and population dynamics of migratory birds. </p>
Variation in North American bumble bee nest success and colony sizes under captive rearing conditions
<p>Of the 265 known bumble bee (<em>Bombus</em>) species, knowledge of colony lifecycle is derived from relatively few species. As interest in <em>Bombus</em> commercialization and conservation grows, it is becoming increasingly important to understand colony growth dynamics across a variety of species since variation exists in nest success, colony growth, and reproductive output. In this study, we documented successful nest initiation and establishment rates of colonies produced from wild-caught gynes, and created a timeline of colony development for fifteen western North American <em>Bombus </em>species captively reared from 2009 to 2019. Additionally, we assessed variation in colony size among five western North American <em>Bombus </em>species from 2015 to 2018. Nest initiation and establishment rates varied greatly among species, ranging from 5–76.1% and 0–71.8%, respectively. <em>Bombus griseocollis </em>had the highest rates of nest success across the eleven-year period, followed by <em>B. occidentalis, B. vosnesenskii, </em>and <em>B. huntii. </em>Further, we identified that colonies reared from two gynes had significantly higher nest initiation and establishment rates per nest box compared to those reared from a single gyne. Colony size also differed significantly among species with <em>B. huntii </em>and <em>B. vosnesenskii </em>producing more worker/drone cells than <em>B. griseocollis, B. occidentalis, </em>and <em>B. vancouverensis. </em>Additionally, gyne production differed significantly among species with <em>B. huntii </em>colonies producing more gynes than <em>B. vosnesenskii. </em>Results from this study increase knowledge of systematic nesting biology for numerous western North American <em>Bombus </em>species under captive rearing conditions, which can further improve rearing techniques available to conservationists and researchers.</p>
Figure 4 in Size of nest complexes, the size of anthills, and infrastructure development in 4 species wood ants (Formica rufa, F. polyctena, F. aquilonia, F. lugubris) (Hymenoptera;
Figure 4. Average diameter (4A, 4B) and height (4C, 4D) of F. rufa and F. polyctena anthills depending on the status: single, 2-5 anthills, 6- 10 anthills, 11-20 anthills, 21-50 anthills, 51-100 anthills in the nest complex (colony). Kyiv andregion, Ukraine.
Figure 7 in Size of nest complexes, the size of anthills, and infrastructure development in 4 species wood ants (Formica rufa, F. polyctena, F. aquilonia, F. lugubris) (Hymenoptera;
Figure 7. Estimates of pair correlation function g(r) plotted against distance r for anthills of F. rufa (7A) and F.polyctena (7B).
Figure 6 in Size of nest complexes, the size of anthills, and infrastructure development in 4 species wood ants (Formica rufa, F. polyctena, F. aquilonia, F. lugubris) (Hymenoptera;
Figure 6. Average number of trails depending on the size class of the anthill F. rufa taking into account the diameter (6A) and height (6B), F. polyctena - also taking into account the diameter (6C) and height (6D), Kyiv and region, Ukraine.
Data from: Nest predation risk explains variation in avian clutch size
Questions about the ecological drivers of, and mechanistic constraints on, productivity have driven research on life history evolution for decades. Resource availability and offspring mortality are considered among the two most important influences on the number of offspring per reproductive attempt. We used a factorial experimental design to manipulate food abundance and perceived offspring predation risk in a wild avian population (red-faced warblers; Cardellina rubrifrons) to identify the mechanistic cause of variation in avian clutch size. Additionally, we tested whether female quality helped explain the extant variation in clutch size. We found no support for the Food Limitation or Female Quality Hypotheses, but we did find support for both predictions of the Nest Predation Risk Hypothesis. Females that experienced an experimentally heightened perception of offspring predation risk responded by laying a smaller clutch than females in the control group. Additionally, predation rates at artificial nests were highest where red-faced warbler clutch size was smallest (at high elevations). Life history theory predicts that an individual should invest less in reproduction when high nest predation risk reduces the likely benefit from that nesting attempt, and indeed we found that birds exhibit phenotypic plasticity in clutch size by laying fewer eggs in response to increasing nest predation risk.
Data from: Global drivers of variation in cup nest size in passerine birds
<p>Dataset contains measurements of passerine cup nests from museum specimens and literature together with life-history, environmental and biogeographical factors pertaining to each species (<em>n</em> = 1,451 records; <em>n</em> = 1,117 species).</p> <p> </p>
Variation in population size, nest distribution, colony extent, and timing of movements at the largest known parrot colony
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Data from: Linking warmer nest temperatures to reduced body size in seabird nestlings: Possible mitochondrial bioenergetic and proteomic mechanisms
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Parental effort in warming young: A neglected component of life history strategies influenced by nest structure, brood size, body mass, and bi-parental care
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Data from: Host identity, nest quality, and parasitism strategy: influences on body size variation in parasitoid bees and wasps
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Data from: Nest predation risk explains variation in avian clutch size
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Data from: Modularity and connectivity of nest structure scale with colony size
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Data from: Fitness in invasive social wasps: the role of variation in viral load, immune response and paternity in predicting nest size and reproductive output
Within any one habitat, the relative fitness of organisms in a population can vary substantially. Social insects like the common wasp are among the most successful invasive animals, but show enormous variation in nest size and other fitness-related traits. Some of this variation may be caused by pathogens such as viruses that can have serious consequences in social insects, which range from reduced productivity to colony death. Both individual immune responses and colony-level traits such as genetic diversity are likely to influence effects of pathogen infections on colony fitness. Here we investigate how infections with Kashmir Bee Virus (KBV), immune response and intracolony genetic diversity (due to queen polyandry) affect nest size in the invasive common wasp, Vespula vulgaris. We show that KBV is highly prevalent in wasps and expression of antiviral immune genes is significantly increased with higher viral loads across individuals. Patriline membership within a nest did not influence KBV susceptibility or immune response. A permutational MANCOVA revealed that polyandry, viral load, and expression of the immune gene Dicer were significant predictors of variation in nest size. High intracolony genetic diversity due to polyandry has previously been hypothesized to improve colony-level resistance to parasites and pathogens. Consistent with this hypothesis, we observed genetically diverse colonies to be significantly larger and to produce more queens, although this effect was not driven by the pathogen we investigated. Invasive wasps clearly suffer from pathogens and expend resources, as indicated here by elevated immune gene expression, toward reducing pathogen-impact on colony fitness.
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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)
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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.