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14,185 results for “phylogenies”
Molecular phylogeny of Urvillea (Paullinieae, Sapindaceae) and its implications in stem vascular diversity
<ul> <li>Background and Aims: The tribe Paullinieae have the highest diversity of vascular variants among the seed plants. The developmental diversity is better understood in the speciose genera <em>Paullinia </em>and <em>Serjania, </em>however, the phylogeny and diversity of vascular variants in the smaller genera of Paullinieae remain understudied. Here we investigate the evolution of development of stem vasculatures in the small genus <em>Urvillea.</em></li> <li>Methods: We generate the first molecular phylogeny of <em>Urvillea </em>derived from 11 markers using a maximum likelihood and Bayesian approach. In combination with phylogenetic reconstruction, stochastic character mapping is used to assess evolutionary changes in stem ontogenies, determined from developmental anatomy of stems collected in the field or from herbarium and wood collections. </li> <li>Key Results: <em>Urvillea </em>is supported as a monophyletic group and sister to <em>Serjania. </em>There are five stem ontogenies in <em>Urvillea, </em>including a regular anatomy and four vascular variants. Most stem ontogenies initiate with lobed stems. Lobed adult stems are conserved in <em>Urvillea</em>, but this ontogeny was lost multiple times. A reversal to regular anatomy occurred in non-climbing species. Phloem wedges, fissured stems and ectopic cambia evolved independently once. Phloem wedges is an intermediate developmental stage in the formation of fissured stems, which is characterized by a continuous fragmentation of vascular tissues. Lobed stems may generate constriction zones and lobes may split or not. </li> </ul> <ul> <li>Conclusions: <em>Urvillea </em>stands out as the third most diverse genus in number of vascular variants within Paullinieae, but only one ontogeny (fissured stems) is exclusive for the genus. Differential cambial activity and ectopic cambia are the main ontogenetic processes generating stem diversity. The evolutionary history of vascular variants demonstrates the large developmental lability of the cambium in such a small genus and corroborates a scenario of repeated evolution of complex anatomies within Paullinieae lianas.</li> </ul>
Ultraconserved elements resolve the phylogeny and corroborate patterns of molecular rate variation in herons (Aves: Ardeidae)
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Branching patterns in phylogenies cannot distinguish diversity-dependent diversification from time-dependent diversification
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Calibrating phylogenies assuming bifurcation or budding alters inferred macroevolutionary dynamics in a densely sampled phylogeny of bivalve families
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A new molecular phylogeny of salps (Tunicata: Thalicea: Salpida) and the evolutionary history of their colonial architecture
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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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Phylogeny and divergence time estimation of Io moths and relatives (Lepidoptera: Saturniidae: Automeris)
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Data from: Evaluating UCE data adequacy and integrating uncertainty in a comprehensive phylogeny of ants
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Phylogeny explains why less therapeutically redundant plant species are not necessarily facing greater use pressure
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Data from: ERC2.0-evolutionary rate covariation update provides more powerful inference of functional interactions across large phylogenies
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Phylogeny, systematics and evolution of mimicry patterns in Neotropical limenitidine butterflies
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Data from: Phylogeny and biogeography of harmochirine jumping spiders (Araneae: Salticidae)
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First global phylogeny of whip spiders (Amblypygi)
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Phylogeny and floral character evolution of Mentzelia section Bicuspidaria (Loasaceae)
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Data from: Fast mvSLOUCH: Multivariate Ornstein-Uhlenbeck-based models of trait evolution on large phylogenies
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Resources from: Gut microbiome composition better reflects host phylogeny than diet diversity in breeding wood-warblers
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Data from: A transcriptome-based phylogeny of Scarabaeoidea confirms the sister group relationship of dung beetles and phytophagous pleurostict scarabs (Coleoptera)
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Simulations modelling the effect of budding speciation on phylogenies
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Tropical origin, global diversification and dispersal in the pond damselflies (Coenagrionoidea) revealed by a new molecular phylogeny
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Data from: Species-specific ecological traits, phylogeny, and geography underpin vulnerability to population declines for North American birds
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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
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.