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Liu W, Duan Z, Wang D, Zhao W, Liu P. Phylogenetic relationships and genetic differentiation of two Salamandrella species as revealed via COI gene from Northeastern China. PLoS One 2024; 19:e0298221. [PMID: 38354179 PMCID: PMC10866476 DOI: 10.1371/journal.pone.0298221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 01/21/2024] [Indexed: 02/16/2024] Open
Abstract
Due to traditional classification methods' limitations, some cryptic species remain undiscovered. To better explore the existence of the Schrenck salamander (Salamandrella tridactyla, a cryptic species of Siberian salamander S. keyserlingii) in China, we conducted a molecular phylogenetic analysis to confirm the taxonomic relationship among Salamandrella species and investigate genetic variation. We used complete sequences of the mitochondrial COI gene from 65 specimens collected across a wide range in Northeastern China. Thirty-five haplotypes were obtained from six populations. They showed medium-high haplotype diversity (Hd) and low nucleotide polymorphism (π). The phylogenetic tree and haplotype network analysis revealed that populations from Greater Khingan Ridge (Huma: HM) and Lesser Khingan Ridge (Tieli: TL) belong to S. keyserlingii, while populations from Changbai Mountain (Shangzhi-zhuziying: SZ, Shangzhi-cuijia: SC, Hailin: HL, and Baishan: BS) belong to S. tridactyla. This indicates the monophyly of Salamandrella and each of the two species. There was a substantial level of genetic differentiation between different species and within populations of the same species. This differentiation was significantly related to geographical distance. At last, the mismatch distribution and neutrality analyses indicated that the TL populations have undergone expansion of history. The study supplements the distributional range of Schrenck salamander. And it provides a theoretical basis for species conservation of Salamandrella species.
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Affiliation(s)
- Wanli Liu
- College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang Province, China
| | - Zhuo Duan
- College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang Province, China
| | - Dingcheng Wang
- College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang Province, China
| | - Wenge Zhao
- College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang Province, China
| | - Peng Liu
- College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang Province, China
- Key Laboratory of Biodiversity of Aquatic Organisms, Harbin Normal University, Harbin, Heilongjiang Province, China
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Zhang S, Lin M, Liu J, Chen J, Liu D, Zhao J, Yao M. A centenary tale: population genetic insights into the introduction history of the oriental fire-bellied toad (Bombina orientalis) in Beijing. BMC Ecol Evol 2022; 22:117. [PMID: 36241967 PMCID: PMC9569074 DOI: 10.1186/s12862-022-02072-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 09/02/2022] [Indexed: 11/06/2022] Open
Abstract
Background The successful establishment of a species population following a single introduction of a few individuals to a non-native area has been limited. Nevertheless, the oriental fire-bellied toad (Bombina orientalis) population in Beijing is purportedly descended from a single introduction of about 200 individuals translocated from Yantai, Shandong Province, China, in 1927. Results To resolve the introduction process and to understand the genetic consequences since that introduction approximately 90 years ago, we investigated the population’s genetic diversity and structure using 261 toads from Beijing and two native Shandong populations and inferred the species’ introduction history using simulation-based approaches. Analysis of mitochondrial DNA (mtDNA) sequences showed the two haplotypes found in Beijing nested within Yantai haplotypes, thus corroborating the historical record of the translocation source. The mtDNA and 11 nuclear microsatellite markers revealed both considerably lower genetic diversity in Beijing than in the source population and strong genetic differentiation between them. Although the current census population in Beijing may be in the range of a few thousand, the effective population size was estimated at only 20–57. Simulations also suggest that this population may have descended from 40–60 founders. Conclusions The Beijing population’s genetic patterns were consistent with the consequences of a severe bottleneck during introduction followed by genetic drift. The introduction trajectory constructed for this B. orientalis population reveals the genetic footprints of a small population sustained in isolation for nearly a century. Our results provide an intriguing example of establishment success from limited founders and may inform ex situ conservation efforts as well as the management of biological invasions. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-022-02072-z.
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Affiliation(s)
- Shan Zhang
- grid.11135.370000 0001 2256 9319School of Life Sciences, Peking University, R312, School of Life Sciences Bldg., 100871 Beijing, China ,grid.11135.370000 0001 2256 9319Institute of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, 100871 China
| | - Meixi Lin
- grid.11135.370000 0001 2256 9319School of Life Sciences, Peking University, R312, School of Life Sciences Bldg., 100871 Beijing, China ,grid.19006.3e0000 0000 9632 6718Department of Ecology and Evolutionary Biology, University of California-Los Angeles, Los Angeles, CA 90095 USA
| | - Jiawei Liu
- grid.11135.370000 0001 2256 9319School of Life Sciences, Peking University, R312, School of Life Sciences Bldg., 100871 Beijing, China ,grid.170205.10000 0004 1936 7822Department of Ecology and Evolution, University of Chicago, Chicago, IL 60637 USA
| | - Jiangce Chen
- grid.63054.340000 0001 0860 4915Mechanical Engineering Department, University of Connecticut, Storrs, CT 06269 USA
| | - Dong Liu
- grid.263817.90000 0004 1773 1790Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055 China
| | - Jindong Zhao
- grid.11135.370000 0001 2256 9319School of Life Sciences, Peking University, R312, School of Life Sciences Bldg., 100871 Beijing, China ,grid.11135.370000 0001 2256 9319Institute of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, 100871 China
| | - Meng Yao
- grid.11135.370000 0001 2256 9319School of Life Sciences, Peking University, R312, School of Life Sciences Bldg., 100871 Beijing, China ,grid.11135.370000 0001 2256 9319Institute of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, 100871 China
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