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Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians

Inaccurate taxonomic assessment of threatened populations can hinder conservation prioritization and management, with human‐mediated population movements obscuring biogeographic patterns and confounding reconstructions of evolutionary history. Giant salamanders were formerly distributed widely acros...

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Autores principales: Turvey, Samuel T., Marr, Melissa M., Barnes, Ian, Brace, Selina, Tapley, Benjamin, Murphy, Robert W., Zhao, Ermi, Cunningham, Andrew A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787787/
https://www.ncbi.nlm.nih.gov/pubmed/31624538
http://dx.doi.org/10.1002/ece3.5257
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author Turvey, Samuel T.
Marr, Melissa M.
Barnes, Ian
Brace, Selina
Tapley, Benjamin
Murphy, Robert W.
Zhao, Ermi
Cunningham, Andrew A.
author_facet Turvey, Samuel T.
Marr, Melissa M.
Barnes, Ian
Brace, Selina
Tapley, Benjamin
Murphy, Robert W.
Zhao, Ermi
Cunningham, Andrew A.
author_sort Turvey, Samuel T.
collection PubMed
description Inaccurate taxonomic assessment of threatened populations can hinder conservation prioritization and management, with human‐mediated population movements obscuring biogeographic patterns and confounding reconstructions of evolutionary history. Giant salamanders were formerly distributed widely across China, and are interpreted as a single species, Andrias davidianus. Previous phylogenetic studies have identified distinct Chinese giant salamander lineages but were unable to associate these consistently with different landscapes, probably because population structure has been modified by human‐mediated translocations for recent commercial farming. We investigated the evolutionary history and relationships of allopatric Chinese giant salamander populations with Next‐Generation Sequencing methods, using historical museum specimens and late 20th‐century samples, and retrieved partial or near‐complete mitogenomes for 17 individuals. Samples from populations unlikely to have been affected by translocations form three clades from separate regions of China, spatially congruent with isolation by either major river drainages or mountain ranges. Pliocene–Pleistocene divergences for these clades are consistent with topographic modification of southern China associated with uplift of the Qinghai‐Tibet Plateau. General Mixed Yule Coalescent model analysis indicates that these clades represent separate species: Andrias davidianus (Blanchard, 1871) (northern Yangtze/Sichuan), Andrias sligoi (Boulenger, 1924) (Pearl/Nanling), and an undescribed species (Huangshan). Andrias sligoi is possibly the world's largest amphibian. Inclusion of additional reportedly wild samples from areas of known giant salamander exploitation and movement leads to increasing loss of biogeographic signal. Wild Chinese giant salamander populations are now critically depleted or extirpated, and conservation actions should be updated to recognize the existence of multiple species.
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spelling pubmed-67877872019-10-17 Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians Turvey, Samuel T. Marr, Melissa M. Barnes, Ian Brace, Selina Tapley, Benjamin Murphy, Robert W. Zhao, Ermi Cunningham, Andrew A. Ecol Evol Original Research Inaccurate taxonomic assessment of threatened populations can hinder conservation prioritization and management, with human‐mediated population movements obscuring biogeographic patterns and confounding reconstructions of evolutionary history. Giant salamanders were formerly distributed widely across China, and are interpreted as a single species, Andrias davidianus. Previous phylogenetic studies have identified distinct Chinese giant salamander lineages but were unable to associate these consistently with different landscapes, probably because population structure has been modified by human‐mediated translocations for recent commercial farming. We investigated the evolutionary history and relationships of allopatric Chinese giant salamander populations with Next‐Generation Sequencing methods, using historical museum specimens and late 20th‐century samples, and retrieved partial or near‐complete mitogenomes for 17 individuals. Samples from populations unlikely to have been affected by translocations form three clades from separate regions of China, spatially congruent with isolation by either major river drainages or mountain ranges. Pliocene–Pleistocene divergences for these clades are consistent with topographic modification of southern China associated with uplift of the Qinghai‐Tibet Plateau. General Mixed Yule Coalescent model analysis indicates that these clades represent separate species: Andrias davidianus (Blanchard, 1871) (northern Yangtze/Sichuan), Andrias sligoi (Boulenger, 1924) (Pearl/Nanling), and an undescribed species (Huangshan). Andrias sligoi is possibly the world's largest amphibian. Inclusion of additional reportedly wild samples from areas of known giant salamander exploitation and movement leads to increasing loss of biogeographic signal. Wild Chinese giant salamander populations are now critically depleted or extirpated, and conservation actions should be updated to recognize the existence of multiple species. John Wiley and Sons Inc. 2019-09-16 /pmc/articles/PMC6787787/ /pubmed/31624538 http://dx.doi.org/10.1002/ece3.5257 Text en © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Turvey, Samuel T.
Marr, Melissa M.
Barnes, Ian
Brace, Selina
Tapley, Benjamin
Murphy, Robert W.
Zhao, Ermi
Cunningham, Andrew A.
Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title_full Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title_fullStr Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title_full_unstemmed Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title_short Historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
title_sort historical museum collections clarify the evolutionary history of cryptic species radiation in the world's largest amphibians
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787787/
https://www.ncbi.nlm.nih.gov/pubmed/31624538
http://dx.doi.org/10.1002/ece3.5257
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