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3,538 results for “Lizard”
FIGURE S1 in Morphological variation and genealogical discordance in Caatinga sand lizards Calyptommatus Rodrigues 1991 (Squamata: Gymnophthalmidae) with the description of a new species
FIGURE S1. Bayesian inference phylogenetic tree for Calyptommatus and outgroups based on the nuDNA data set (c-mos + ntf3; 1,024 bp). Values on nodes refer to Bayesian posterior probabilities (pp); values above 0.95 are considered high statistical support for clades.
FIGURE 6 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 6. Sulcate view of the left hemipenis of Bronchocela jubata (MZB 6639) from Sukamantri, Bogor, West Java.
FIGURE 5 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 5. Bronchocela jubata (A) in life (adult male, not collected) from Cibinong near Bogor, West Java.
FIGURE 4 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 4. Bronchocela jubata lectotype (MNHN-RA 2542, adult male) from Java: (A) lateral view of the full body, (B) dorsal head, (C) lateral head, (D) ventral head.
FIGURE 3 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 3. Principal Component Analysis (PCA): (A) biplot of morphometric variation in combined sexes between Bronchocela jubata (red) and B. cristatella (blue) in Java, Indonesia; (B) the same base biplots with vectors associated with species clusters. Each point represents an individual specimen, and the relative distance between two points is equivalent to the amount of dissimilarity.
FIGURE 1 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 1. Current distribution map showing the collection/observation localities of Bronchocela jubata (red) and its sympatric congener, B. cristatella sensu lato (blue) on Java and Bali Islands; sympatric localities filled partially; for the distribution of B. jubata on Sumatra Island, see Amarasinghe et al. 2022.
FIGURE 2 in Taxonomy and distribution of a common arboreal lizard, Bronchocela jubata Duméril & Bibron, 1837 (Reptilia: Agamidae), with designation of its lectotype from Java, Indonesia
FIGURE 2. Boxplots of (A) head length, (B) snout–vent length, and (C) tail length indicating differences between Bronchocela jubata and B. cristatella in Java, Indonesia (note that both sexes were mixed); top, middle and bottom lines of the boxes indicate 75th percentile, median and 25th percentile, respectively.
FIGURE 9 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 9. Among species and among groups variation in the range of selected meristic and quantitative traits of Anadia species from the eastern and western groups. Note that A. antioquensis, grouped together with the eastern species, is reassigned in this study to the genus Riama.
FIGURE 8 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 8. Known altitudinal distribution of the western and eastern groups of Anadia species in northwestern South America. Note that A. antioquensis, grouped together with the eastern species, is reassigned in this study to the genus Riama.
FIGURE 7 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 7. Geographical distribution of the western and eastern groups of Anadia species in northwestern South America. Note that A. antioquensis, mapped together in the eastern group, is reassigned in this study to the genus Riama.
FIGURE 6 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 6. Right hemipenis of Anadia hollandi sp. nov. MHUA-R13726 paratype in sulcate and asulcate views.
FIGURE 5 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 5. The holotype of Anadia hollandi sp. nov. (MHUA-R 13725) in its branch-hanging posture (left). Detail of lateral, ventral, and dorsal head scales in photographs (middle) and drawing (right). Photos by Luis A. Mazariegos H.
FIGURE 4 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 4. Known range of variation used to recognise Anadia hollandi sp. nov. against other species of the ocellata species group and the western group sensu Oftedal (1974).
FIGURE 2 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 2. Two-dimensional visualisation of uncorrected (16S) genetic distances among both species and individuals of Anadia included in this study. Left: ordinary multidimensional scaling (MDS) including the species found to nest within the genus Riama, A. antioquensis. Right: non-metric multidimensional scaling (NMDS, stress value = 0.15) excluding A. antioquensis. X and Y dimensions are comparable within a single plot, but not between the plots.
FIGURE 1 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 1. Phylogenetic hypothesis on the relationship between Anadia hollandi sp. nov. and other cercosaurine genera and species based on four gene regions (see Supplementary Table 1). Its relationship with other species of the Anadia is outlined in blue, whereas the paraphyletic position of A. antioquensis is outlined in orange. The label "other cercosaurines" denotes a clade with species of the genera Oreosaurus, Proctoporus, Cercosaura, Selvasaura, and Potamites. Numbers on nodes represent ultrafast bootstrap support values after 5000 pseudoreplicates, replaced by green-filled circles when the values are above 0.95. Photos: A. antioquensis by Carlos M. Marín, and A. hollandi sp. nov. by Luis A. Mazariegos H.
FIGURE 3 in One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
FIGURE 3. Male individuals used as holotype and paratypes of Anadia hollandi sp. nov. from the Mesenia-Paramillo nature reserve. Photographs not to scale; see body size (snout-to-vent length, SVL). Photos by Luis A. Mazariegos H.
The functional significance of panting as a mechanism of thermoregulation and its relationship to the critical thermal maxima in lizards
<p>Because most desert-dwelling lizards rely primarily on behavioral thermoregulation for the maintenance of active body temperatures, the effectiveness of panting as a thermoregulatory mechanism for evaporative cooling has not been widely explored. We measured changes in body temperature (Tb) with increasing air temperature (Ta) for seventeen species of lizards that range across New Mexico and Arizona and quantified the temperatures associated with the onset of panting, the capacity of individuals to depress Tb below Ta while panting and estimated the critical thermal maxima (CTmax) for each individual. We examined these variables as a function of phylogeny, body mass, and local acclimatization temperature. We found that many species can depress Tb 2-3°C below Ta while panting, and the capacity to do so appears to be a function of each species' ecology and thermal environment, rather than phylogeny. Panting thresholds and CTmax's are phylogenetically conserved within groups. Understanding the functional significance of panting and its potential importance as a thermoregulatory mechanism will improve our understanding of the potential for species' persistence in an increasingly warmer world.</p>
Data from: Fine with heat, problems with water: microclimate alters water loss in a thermally adapted insular lizard
Global change, including habitat isolation and climate change, has both short- and long-term impacts on wildlife populations. For example, genetic drift and inbreeding result in genetic impoverishment in small, isolated populations, while species undergo range shifts or adaptive phenotypic change in response to shifts in environmental temperatures. In this study, we utilize a model system in which Holocene landscape changes have occurred to examine long-term effects of population isolation. To examine how isolation may constrain responses to climate change, we characterized ecophysiology across land-bridge island populations of Erhard's wall lizard Podarcis erhardii. We hypothesized that 1) small, isolated populations that are likely genetically depauperate would exhibit lower phenotypic variability; and 2) populations would be adapted to local microhabitat conditions. We compared a population at a low elevation site on the large island of Naxos with two small populations on nearby islets to determine the effects of population fragmentation. We further compared the low elevation Naxos population with two high elevation sites characterized by disparate microclimates to examine the effects of microclimate. To assess the thermal biology and ecophysiological limits of the study species we measured operative body temperatures (Te), field body temperatures (Tb), preferred temperatures (Tp), thermal tolerances (CTmax and CTmin), and evaporative water loss (EWL). Our results indicate that small, isolated populations did not exhibit thermal biology or evaporative water loss, while EWL and thermoregulatory effort varied according to microhabitat characteristics. This study integrates fine-scale measurements with environmental data to provide a holistic view of the relationships between ecophysiology, fragmentation, and microclimate. Our methods can be applied to other ectotherms to gain a better understanding of potential impacts of global change on natural populations.
FIGURE 5 in A monographic catalogue on the systematics and phylogeny of the South American iguanian lizard family Liolaemidae (Squamata, Iguania)
FIGURE 5. Phylogenetic relationships between the species of the genus Phymaturus. Note contrasts between the structure of the phylogenetic hypotheses proposed by Lobo & Quinteros (2005b) and Espinoza et al. (2004). Although we consider that P. dorsimaculatus is a synonym of P. vociferator, the figure shows the nomenclature used in the original work (Lobo & Quinteros 2005).
FIGURE 4 in A monographic catalogue on the systematics and phylogeny of the South American iguanian lizard family Liolaemidae (Squamata, Iguania)
FIGURE 4. Phylogenetic relationships between the Liolaemus species of the series signifer (subgenera Donosolaemus, Vilcunia and Eulaemus, and line magellanicus). The main structure of the tree is based on Schulte et al.'s (2000, 2004) and Espinoza et al.'s (2004) phylogenetic hypotheses. Additional details on phylogenetic relationships between species within each clade have been taken from specific phylogenetic studies (e.g. Avila et al. 2007; Pincheira-Donoso et al. 2007a).
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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.