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1,047 results for “Salamanders”
Data from: Salamander ecomorphology reveals a unique suite of climbing adaptations
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Data from: Genomic data reject the hypothesis of sympatric ecological speciation in a clade of Desmognathus salamanders
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Post-Pleistocene Dispersal Explains the Rapoport Effect in North American Salamanders
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Salamander skin microbiome sample metadata: Variation in amphibian skin microbes
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Data from: Evidence for complex life cycle constraints on salamander body form diversification
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Data from: Genome-specific histories of divergence and introgression between an allopolyploid unisexual salamander lineage and two ancestral sexual species
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The contributions of individual traits to survival among terrestrial juvenile pond-breeding salamanders
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Resolving higher-level phylogenetic networks with repeated hybridization in a complex of polytypic salamanders (Plethodontidae: Desmognathus)
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Data from: Mortality and morphology in egg masses of unisexual and Jefferson Salamanders
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Speciation hypotheses from phylogeographic delimitation yield an integrative taxonomy for Seal Salamanders (Desmognathus monticola)
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Scaling between macro- to microscale climatic data reveals strong phylogenetic inertia in niche evolution in plethodontid salamanders
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Data from: The influence of locus number and information content on species delimitation: an empirical test case in an endangered Mexican salamander
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A giant’s appetite: How body size drives the diet and trophic position of the Japanese giant salamander
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Hard edges, soft edges, and species range evolution: A genomic analysis of the Cumberland Plateau salamander
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FIGURE 8. Branch containing Desmognathus quadramaculatus, D. marmoratus and D in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 8. Branch containing Desmognathus quadramaculatus, D. marmoratus and D. folkertsi pruned from Bayesian majority-rule consensus phylogram, diamonds represent posterior probabilities> 0.90. Numbers following species names in parenthesis represent population sample numbers.
FIGURE 7. Sampling localities for Desmognathus imitator and D in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 7. Sampling localities for Desmognathus imitator and D. aeneus, symbols match those in Fig. 5B and 5C respectively.
FIGURE 4 in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 4. Maximum-likelihood reconstruction, numbers above branches represent bootstrap support values (only bootstrap values below 100% are shown), clades are labeled as in Figure 3.
FIGURE 2 in Towards rectifying limitations on species delineation in dusky salamanders (Desmognathus: Plethodontidae): An ecoregion-drainage sampling grid reveals additional cryptic clades
FIGURE 2. Color-coded profile of the Level IV Ecoregions present in the Pee Dee and Santee River drainages; the number of dusky salamander species present in each level IV ecoregion X drainage sample unit (based on current distribution maps) is shown.
Data from: Macroevolution of desiccation-related morphology in plethodontid salamanders as inferred from a novel surface area to volume ratio estimation approach
Evolutionary biologists have long been interested in the macroevolutionary consequences of various selection pressures, yet physiological responses to selection across deep time are not well understood. In this paper, we investigate how a physiologically-relevant morphological trait, surface area to volume ratio (SA:V) of lungless salamanders, has evolved across broad regional and climatic variation. SA:V directly impacts an organisms' ability to retain water, leading to the expectation that smaller SA:Vs would be advantageous in arid, water-limited environments. To explore the macroevolutionary patterns of SA:V, we first develop an accurate method for estimating SA:V from linear measurements. Next, we investigate the macroevolutionary patterns of SA:V across 257 salamander species, revealing that higher SA:Vs phylogenetically correlate with warmer, wetter climates. We also observe higher SA:V disparity and rate of evolution in tropical species, mirrored by higher climatic disparity in available and occupied tropical habitats. Taken together, these results suggest that the tropics have provided a wider range of warmer, wetter climates for salamanders to exploit, thereby relaxing desiccation pressures on SA:V. Overall, this paper provides an accurate, efficient method for quantifying salamander SA:V, allowing us to demonstrate the power of physiological selection pressures in influencing the macroevolution of morphology.
Relative size underlies alternative morph development in a salamander
<p>Size thresholds commonly underlie the induction of alternative morphological states. However, the respective importance of absolute and relative size to such thresholds remains uncertain. If absolute size governs expression, morph frequency should differ among environments that influence absolute sizes (e.g. resources, competition), and individuals of the same morph should have similar average sizes across environments. If relative size determines expression, the frequency of each morph may not differ among environments, but morphs within each environment should differ in size relative to one another. We tested these predictions in a salamander (<i>Ambystoma talpoideum</i>) that develops into either a terrestrial metamorph or an aquatic paedomorph. To generate size variation within and among environments, we reared individuals in mesocosm ponds across three conspecific densities. We found that morph frequency did not differ among density treatments, and the morphs were not similarly sized within each density treatment. Instead, within each environment, relatively larger individuals became metamorphs and relatively smaller individuals became paedomorphs. Relative size therefore determined morph development, highlighting the importance of an individual's social context to size-dependent morph induction.<b> </b></p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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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.