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Calibrating the tree of vipers under the fossilized birth-death model

Scaling evolutionary trees to time is essential for understanding the origins of clades. Recently developed methods allow including the entire fossil record known for the group of interest and eliminated the need for specifying prior distributions for node ages. Here we apply the fossilized birth-de...

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Autores principales: Šmíd, Jiří, Tolley, Krystal A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6445296/
https://www.ncbi.nlm.nih.gov/pubmed/30940820
http://dx.doi.org/10.1038/s41598-019-41290-2
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author Šmíd, Jiří
Tolley, Krystal A.
author_facet Šmíd, Jiří
Tolley, Krystal A.
author_sort Šmíd, Jiří
collection PubMed
description Scaling evolutionary trees to time is essential for understanding the origins of clades. Recently developed methods allow including the entire fossil record known for the group of interest and eliminated the need for specifying prior distributions for node ages. Here we apply the fossilized birth-death (FBD) approach to reconstruct the diversification timeline of the viperines (subfamily Viperinae). Viperinae are an Old World snake subfamily comprising 102 species from 13 genera. The fossil record of vipers is fairly rich and well assignable to clades due to the unique vertebral and fang morphology. We use an unprecedented sampling of 83 modern species and 13 genetic markers in combination with 197 fossils representing 28 extinct taxa to reconstruct a time-calibrated phylogeny of the Viperinae. Our results suggest a late Eocene-early Oligocene origin with several diversification events following soon after the group’s establishment. The age estimates inferred with the FBD model correspond to those from previous studies that were based on node dating but FBD provides notably narrower credible intervals around the node ages. Viperines comprise two African and an Eurasian clade, but the ancestral origin of the subfamily is ambiguous. The most parsimonious scenarios require two transoceanic dispersals over the Tethys Sea during the Oligocene.
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spelling pubmed-64452962019-04-08 Calibrating the tree of vipers under the fossilized birth-death model Šmíd, Jiří Tolley, Krystal A. Sci Rep Article Scaling evolutionary trees to time is essential for understanding the origins of clades. Recently developed methods allow including the entire fossil record known for the group of interest and eliminated the need for specifying prior distributions for node ages. Here we apply the fossilized birth-death (FBD) approach to reconstruct the diversification timeline of the viperines (subfamily Viperinae). Viperinae are an Old World snake subfamily comprising 102 species from 13 genera. The fossil record of vipers is fairly rich and well assignable to clades due to the unique vertebral and fang morphology. We use an unprecedented sampling of 83 modern species and 13 genetic markers in combination with 197 fossils representing 28 extinct taxa to reconstruct a time-calibrated phylogeny of the Viperinae. Our results suggest a late Eocene-early Oligocene origin with several diversification events following soon after the group’s establishment. The age estimates inferred with the FBD model correspond to those from previous studies that were based on node dating but FBD provides notably narrower credible intervals around the node ages. Viperines comprise two African and an Eurasian clade, but the ancestral origin of the subfamily is ambiguous. The most parsimonious scenarios require two transoceanic dispersals over the Tethys Sea during the Oligocene. Nature Publishing Group UK 2019-04-02 /pmc/articles/PMC6445296/ /pubmed/30940820 http://dx.doi.org/10.1038/s41598-019-41290-2 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Šmíd, Jiří
Tolley, Krystal A.
Calibrating the tree of vipers under the fossilized birth-death model
title Calibrating the tree of vipers under the fossilized birth-death model
title_full Calibrating the tree of vipers under the fossilized birth-death model
title_fullStr Calibrating the tree of vipers under the fossilized birth-death model
title_full_unstemmed Calibrating the tree of vipers under the fossilized birth-death model
title_short Calibrating the tree of vipers under the fossilized birth-death model
title_sort calibrating the tree of vipers under the fossilized birth-death model
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6445296/
https://www.ncbi.nlm.nih.gov/pubmed/30940820
http://dx.doi.org/10.1038/s41598-019-41290-2
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