Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)

Abstract Phenotypically diverse species from recently evolved groups always share allele/haplotype due to insufficient differentiation in the early process. In this study, we performed population genetics analyses using sequences from the mitochondrial cytochrome b gene, and two nuclear genes to inv...

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Autores principales:	Weitao Chen, Xingjian Yue, Shunping He
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/292db2299c9346f39148dc3cea951abe
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spelling	oai:doaj.org-article:292db2299c9346f39148dc3cea951abe2021-12-02T15:05:43ZGenetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)10.1038/s41598-017-06172-52045-2322https://doaj.org/article/292db2299c9346f39148dc3cea951abe2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06172-5https://doaj.org/toc/2045-2322Abstract Phenotypically diverse species from recently evolved groups always share allele/haplotype due to insufficient differentiation in the early process. In this study, we performed population genetics analyses using sequences from the mitochondrial cytochrome b gene, and two nuclear genes to investigate the genetic differentiation of the closely related Schizothorax species complex, comprising a group of alpine fish living in the Nujiang River. The results from both mtDNA and nDNA markers revealed relatively low but pronounced genetic differentiation among the three Schizothorax species, i.e., Schizothorax gongshanensis, S. lissolabiatus, and S. nukiangensis. However, haplotype sharing was frequently occurred among the three species. Divergence time estimation suggested the last glaciation on the Tibetan Plateau (0.075–0.01 Ma) might drive the divergence of the species complex. Gene flow might contribute to the haplotype sharing between S. gongshanensis and S. lissolabiatus, and between S. gongshanensis and S. nukiangensis, whereas retention of ancestral polymorphisms seemed to be a better explanation of the haplotype sharing between S. lissolabiatus and S. nukiangensis. In addition, S. lissolabiatus populations should obtain more protection in the future because of their low genetic diversity and habitat fragmentation. In summary, our study assesses genetic differentiation among the three closely related Schizothorax species and explores the possible driving forces for their differentiation.Weitao ChenXingjian YueShunping HeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Weitao Chen Xingjian Yue Shunping He Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
description	Abstract Phenotypically diverse species from recently evolved groups always share allele/haplotype due to insufficient differentiation in the early process. In this study, we performed population genetics analyses using sequences from the mitochondrial cytochrome b gene, and two nuclear genes to investigate the genetic differentiation of the closely related Schizothorax species complex, comprising a group of alpine fish living in the Nujiang River. The results from both mtDNA and nDNA markers revealed relatively low but pronounced genetic differentiation among the three Schizothorax species, i.e., Schizothorax gongshanensis, S. lissolabiatus, and S. nukiangensis. However, haplotype sharing was frequently occurred among the three species. Divergence time estimation suggested the last glaciation on the Tibetan Plateau (0.075–0.01 Ma) might drive the divergence of the species complex. Gene flow might contribute to the haplotype sharing between S. gongshanensis and S. lissolabiatus, and between S. gongshanensis and S. nukiangensis, whereas retention of ancestral polymorphisms seemed to be a better explanation of the haplotype sharing between S. lissolabiatus and S. nukiangensis. In addition, S. lissolabiatus populations should obtain more protection in the future because of their low genetic diversity and habitat fragmentation. In summary, our study assesses genetic differentiation among the three closely related Schizothorax species and explores the possible driving forces for their differentiation.
format	article
author	Weitao Chen Xingjian Yue Shunping He
author_facet	Weitao Chen Xingjian Yue Shunping He
author_sort	Weitao Chen
title	Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
title_short	Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
title_full	Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
title_fullStr	Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
title_full_unstemmed	Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)
title_sort	genetic differentiation of the schizothorax species complex (cyprinidae) in the nujiang river (upper salween)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/292db2299c9346f39148dc3cea951abe
work_keys_str_mv	AT weitaochen geneticdifferentiationoftheschizothoraxspeciescomplexcyprinidaeinthenujiangriveruppersalween AT xingjianyue geneticdifferentiationoftheschizothoraxspeciescomplexcyprinidaeinthenujiangriveruppersalween AT shunpinghe geneticdifferentiationoftheschizothoraxspeciescomplexcyprinidaeinthenujiangriveruppersalween
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Genetic differentiation of the Schizothorax species complex (Cyprinidae) in the Nujiang River (upper Salween)

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