The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion

Abstract The Korean Peninsula, located at the southern tip of Northeast Asia, has never been covered by ice sheets and was a temperate refugium during the Pleistocene. Karsenia koreana, the sole Asian plethodontid salamander species, occurs only on the southern half of the Korean Peninsula and is th...

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Autores principales:	Jong Yoon Jeon, Ji-hwa Jung, Ho Young Suk, Hang Lee, Mi-Sook Min
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6cb2bdf249b84b3494bc91fcd9c0bf2b
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spelling	oai:doaj.org-article:6cb2bdf249b84b3494bc91fcd9c0bf2b2021-12-02T13:41:22ZThe Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion10.1038/s41598-021-88238-z2045-2322https://doaj.org/article/6cb2bdf249b84b3494bc91fcd9c0bf2b2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88238-zhttps://doaj.org/toc/2045-2322Abstract The Korean Peninsula, located at the southern tip of Northeast Asia, has never been covered by ice sheets and was a temperate refugium during the Pleistocene. Karsenia koreana, the sole Asian plethodontid salamander species, occurs only on the southern half of the Korean Peninsula and is thought to have found various climatic refugia. Despite its phylogenetic and biogeographic importance, no population-level genetic analysis has been performed on this species. Here we study the population genetic structure of K. koreana using mitochondrial and microsatellite loci to understand the recent historical dispersion process that shaped its current distribution. Overall, the genetic distance between populations correlated well with the spatial distance, and the genetic structure among populations showed signs of a unilateral northward expansion from a southernmost refugium population. Given the distinct genetic structure formed among the populations, the level of historical gene flow among populations appears to have been very low. As the estimated effective population size of K. koreana was also small, these results suggest that the small, restricted populations of K. koreana are extremely vulnerable to environmental changes that may require high levels of genetic diversity to cope with. Thus, special management strategies are needed to preserve these remnant populations.Jong Yoon JeonJi-hwa JungHo Young SukHang LeeMi-Sook MinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jong Yoon Jeon Ji-hwa Jung Ho Young Suk Hang Lee Mi-Sook Min The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
description	Abstract The Korean Peninsula, located at the southern tip of Northeast Asia, has never been covered by ice sheets and was a temperate refugium during the Pleistocene. Karsenia koreana, the sole Asian plethodontid salamander species, occurs only on the southern half of the Korean Peninsula and is thought to have found various climatic refugia. Despite its phylogenetic and biogeographic importance, no population-level genetic analysis has been performed on this species. Here we study the population genetic structure of K. koreana using mitochondrial and microsatellite loci to understand the recent historical dispersion process that shaped its current distribution. Overall, the genetic distance between populations correlated well with the spatial distance, and the genetic structure among populations showed signs of a unilateral northward expansion from a southernmost refugium population. Given the distinct genetic structure formed among the populations, the level of historical gene flow among populations appears to have been very low. As the estimated effective population size of K. koreana was also small, these results suggest that the small, restricted populations of K. koreana are extremely vulnerable to environmental changes that may require high levels of genetic diversity to cope with. Thus, special management strategies are needed to preserve these remnant populations.
format	article
author	Jong Yoon Jeon Ji-hwa Jung Ho Young Suk Hang Lee Mi-Sook Min
author_facet	Jong Yoon Jeon Ji-hwa Jung Ho Young Suk Hang Lee Mi-Sook Min
author_sort	Jong Yoon Jeon
title	The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
title_short	The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
title_full	The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
title_fullStr	The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
title_full_unstemmed	The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
title_sort	asian plethodontid salamander preserves historical genetic imprints of recent northern expansion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/6cb2bdf249b84b3494bc91fcd9c0bf2b
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The Asian plethodontid salamander preserves historical genetic imprints of recent northern expansion

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