Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)

Abstract The Himalaya presents an outstanding geologically active orogen and biodiversity hotspot. However, our understanding of the historical biogeography of its fauna is far from comprehensive. Many taxa are commonly assumed to have originated from China-Indochina and dispersed westward along the...

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Autores principales:	Sylvia Hofmann, Matthias Stöck, Yuchi Zheng, Francesco G. Ficetola, Jia-Tang Li, Ulrich Scheidt, Joachim Schmidt
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8ac5472374ff4e4b9b304c47d30a3620
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spelling	oai:doaj.org-article:8ac5472374ff4e4b9b304c47d30a36202021-12-02T12:30:11ZMolecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)10.1038/s41598-017-03395-42045-2322https://doaj.org/article/8ac5472374ff4e4b9b304c47d30a36202017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03395-4https://doaj.org/toc/2045-2322Abstract The Himalaya presents an outstanding geologically active orogen and biodiversity hotspot. However, our understanding of the historical biogeography of its fauna is far from comprehensive. Many taxa are commonly assumed to have originated from China-Indochina and dispersed westward along the Himalayan chain. Alternatively, the “Tibetan-origin hypothesis” suggests primary diversification of lineages in Paleo-Tibet, and secondary diversification along the slopes of the later uplifted Greater Himalaya. We test these hypotheses in high-mountain megophryid anurans (Scutiger). Extensive sampling from High Asia, and analyses of mitochondrial (2839 bp) and nuclear DNA (2208 bp), using Bayesian and Maximum likelihood phylogenetics, suggest that the Himalayan species form a distinct clade, possibly older than those from the eastern Himalaya-Tibet orogen. While immigration from China-Indochina cannot be excluded, our data may indicate that Himalayan Scutiger originated to the north of the Himalaya by colonization from Paleo-Tibet and then date back to the Oligocene. High intraspecific diversity of Scutiger implies limited migration across mountains and drainages along the Himalaya. While our study strengthens support for a “Tibetan-origin hypothesis”, current sampling (10/22 species; 1 revalidated: S. occidentalis) remains insufficient to draw final conclusions on Scutiger but urges comparative phylogeographers to test alternative, geologically supported hypotheses for a true future understanding of Himalayan biogeography.Sylvia HofmannMatthias StöckYuchi ZhengFrancesco G. FicetolaJia-Tang LiUlrich ScheidtJoachim SchmidtNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sylvia Hofmann Matthias Stöck Yuchi Zheng Francesco G. Ficetola Jia-Tang Li Ulrich Scheidt Joachim Schmidt Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
description	Abstract The Himalaya presents an outstanding geologically active orogen and biodiversity hotspot. However, our understanding of the historical biogeography of its fauna is far from comprehensive. Many taxa are commonly assumed to have originated from China-Indochina and dispersed westward along the Himalayan chain. Alternatively, the “Tibetan-origin hypothesis” suggests primary diversification of lineages in Paleo-Tibet, and secondary diversification along the slopes of the later uplifted Greater Himalaya. We test these hypotheses in high-mountain megophryid anurans (Scutiger). Extensive sampling from High Asia, and analyses of mitochondrial (2839 bp) and nuclear DNA (2208 bp), using Bayesian and Maximum likelihood phylogenetics, suggest that the Himalayan species form a distinct clade, possibly older than those from the eastern Himalaya-Tibet orogen. While immigration from China-Indochina cannot be excluded, our data may indicate that Himalayan Scutiger originated to the north of the Himalaya by colonization from Paleo-Tibet and then date back to the Oligocene. High intraspecific diversity of Scutiger implies limited migration across mountains and drainages along the Himalaya. While our study strengthens support for a “Tibetan-origin hypothesis”, current sampling (10/22 species; 1 revalidated: S. occidentalis) remains insufficient to draw final conclusions on Scutiger but urges comparative phylogeographers to test alternative, geologically supported hypotheses for a true future understanding of Himalayan biogeography.
format	article
author	Sylvia Hofmann Matthias Stöck Yuchi Zheng Francesco G. Ficetola Jia-Tang Li Ulrich Scheidt Joachim Schmidt
author_facet	Sylvia Hofmann Matthias Stöck Yuchi Zheng Francesco G. Ficetola Jia-Tang Li Ulrich Scheidt Joachim Schmidt
author_sort	Sylvia Hofmann
title	Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
title_short	Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
title_full	Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
title_fullStr	Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
title_full_unstemmed	Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)
title_sort	molecular phylogenies indicate a paleo-tibetan origin of himalayan lazy toads (scutiger)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8ac5472374ff4e4b9b304c47d30a3620
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Molecular Phylogenies indicate a Paleo-Tibetan Origin of Himalayan Lazy Toads (Scutiger)

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