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3,538 results for “Lizard”
Data from: Elevational Goldilocks zone underlies the exceptional diversity of an Andean lizard radiation (Liolaemus; Liolaemidae)
<p>Mountains are among the most biodiverse regions on the planet, and how these landforms shape diversification through the interaction of biological traits and geo-climatic dynamics is integral to understanding global biodiversity. In this study we investigate the dual roles of climate change and mountain uplift on the evolution of a hyper diverse radiation, <em>Liolaemus </em>lizards, with a spatially explicit model of diversification using a reconstruction of uplift and paleotemperature in central and southern South America. The diversification model captures a hotspot for <em>Liolaemus </em>around 40°S in lineages with low dispersal ability and narrow niche breadths. Under the model, speciation rates are highest in low latitudes (<35°S) and mid-elevations (~1000m), while extinction rates are highest at higher latitudes (>35°S) and higher elevations (>2000m). Temperature change through the Cenozoic explained variation in speciation and extinction rates through time and across different elevational bands. Our results point to the conditions of mid-elevations being optimal for diversification (i.e., Goldilocks Zone), driven by the combination of (1) a complex topography which facilitates speciation during periods of climatic change, and (2) a relatively moderate climate which enables the persistence of ectothermic lineages and buffers species from extinction.</p>
Spontaneous quantity discrimination in Sleepy lizards
<p><span class="node-description overflow editable editable-pre-wrapped editable-click">In this study, we tested 8 Sleepy-lizards (<em>Tiliqua rugosa asper</em>) on their ability to spontaneously choose the larger of two quantities based on continuous or discrete information. We recorded the lizards' identity, weight (g) and snout-vent length (mm). As we tested lizards in two batches (groups), we also recorded if they belonged to group A or B. In regards to the experiment, we recorded session (day), trial (1-12), stage (preference test or quantity discrimination), date of the test day and start time of the first trial, the test (continuous or discrete) and the comparison. We measured lizards' choice behaviour by recording the choice of the quantity as well as a binary version that represented the choice of the larger quantity as 1 and the smaller choice as 0. Finally, we also quantified the time it took lizards to make a choice from trial videos in seconds (latency). NA values indicate either no data or no choice. We analysed the choice behaviour using the binary choice data and also the latency to understand if lizards were able to discriminate quantities and if they showed a speed-accuracy trade-off. We provide trial-by-trial raw data in a horizontal format. How to transpose the data set into a vertical format and details regarding further calculations and statistical analyses can be found on OSF, doi: <span class="scripted"><span>10.17605/OSF.IO/PR46D</span></span></span></p>
Hydration and evaporative water loss of lizards change in response to temperature and humidity acclimation
<p>Data and code associated with the 2023 publication in the Journal of Experimental Biology (doi:10.1242/jeb.246459).</p>
Fig. 6. Pietraroia specimen MPN A01 in New lizards and rhynchocephalians from the Lower Cretaceous of southern Italy
Fig. 6. Pietraroia specimen MPN A01/82. A. Complete specimen (but without distal one third of tail). B. Midcaudal vertebra.
Fig. 5 in New lizards and rhynchocephalians from the Lower Cretaceous of southern Italy
Fig. 5. Eichstaettisaurus gouldi sp. nov. Disarticulated skull within the body cavity of Pietraroia specimen MPN A01/82. A. Drawing of skull components. B. As preserved in the specimen.
Fig. 10. Visceral structures. A in New lizards and rhynchocephalians from the Lower Cretaceous of southern Italy
Fig. 10. Visceral structures. A. The gut of Sphenodon punctatus (redrawn from Guibé 1970: fig. 403); not to scale. B, C. Pietraroia specimen MPN A01/82, abdominal region; scale bars 2 mm. B. Simplified figure showing arrangement of gut parts. C. The central part of the specimen.
Fig. 4. Eichstaettisaurus. A, B in New lizards and rhynchocephalians from the Lower Cretaceous of southern Italy
Fig. 4. Eichstaettisaurus. A, B. Eichstaettisaurus gouldi sp. nov., holotype MNP 19457. A. Right pes, complete (A1), enlargements of fourth (A2), and third (A3) digits to show how breakage creates the impression of a spatulate tip. B. Digit from right manus. C. E. schroederi, BSPHM 1937 I 1, manus ungual for comparison; not to scale.
Fig. 3 in New data on the dentition of the scincomorphan lizard Polyglyphanodon sternbergi
Fig. 3. Right dentary of UMNH 15559, Polyglyphanodon sternbergi Gilmore, 1940. Stereopair of occlusal view (A) and superocaudal view (B) of anterior portion of tooth row of right dentary; note the V−shaped transverse blade with serrations of the tooth just posterior to the empty tooth space (arrow 1) and the lack of serrations on the anterior teeth including one with an expanded ridge (arrow 2).
Fig. 4 in New data on the dentition of the scincomorphan lizard Polyglyphanodon sternbergi
Fig. 4. Articulated upper and lower jaw fragments of OMNH 61334, Polyglyphanodon sternbergi Gilmore, 1940. In lingual view (A) and closeup of lingual view (B).
Data from: Can extreme climatic events induce shifts in adaptive potential? A conceptual framework and empirical test with Anolis lizards
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Tracing evolutionary trajectories in the presence of gene flow in South American temperate lizards (Squamata: Liolaemus kingii group)
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Data from: Quantity discrimination, decision-making, and the role of early-life conditions in a lizard
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Data from: Heat tolerance is more variable than cold tolerance across species of Iberian lizards after controlling for intraspecific variation
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Data from: Proximate and ultimate drivers of variation in bite force in the insular lizards Podarcis melisellensis and Podarcis sicula
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Data from: Active regulation of ultraviolet light exposure overrides thermal preference behaviour in eastern fence lizards
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Walking or hanging: the role of habitat use for body shape evolution in lacertid lizards
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DNA methylation-based age prediction and sex-specific epigenetic aging in a lizard with female-biased longevity
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Data from: Context-dependent body size evolution in lacertid lizards: Differential role of structural habitat and climate across radiations
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Female lizards (Eremias argus) reverse Bergmann’s rule across altitude
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Data from: Composition of a chemical signalling trait varies with phylogeny and precipitation across an Australian lizard radiation
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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.