Genetic diversity and demographic history of the endangered and endemic fish (Platypharodon extremus): implications for stock enhancement in Qinghai Tibetan Plateau

Junhu Su, Weihong Ji, Yanping Zhang, Dianne GLEESON, Lou Zhongyu, Jing Ren, Yanming Wei

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Release of captive bred individuals into the wild is now a conservation management approach to increase the depleted natural wildlife populations. Such method has been initiated for conservation of wild fish population on Qinghai Tibetan Plateau (QTP), a region of high level of species endemism. Platypharodon extremus is an endemic schizothoracine fish species and a dominated species in the plateau water ecosystem of the QTP in the past, it is now enlisted as an endangered species. However, phylogenetic and genetic information have not been previously considered in the ongoing stock enhancement program. In this study, genetic and demographic processes of the populations across the distribution of this species were assessed, using the mitochondrial DNA control region and Cyt-b.We found that all populations displayed low nucleotide diversity suggesting severe historical bottleneck events and high haplotype diversity indicating recent population expansion. Both the phylogenetic tree and the minimum spanning tree showed no significant genealogical structures corresponding to sampling locations. Population histories including bottleneck, exponential expansion and the absence of population structure indicate that demographic processes highly influenced genetic variation within and among populations of P. extreums. The data presented is consistent with a historical bottleneck and recent population expansion for all four populations based on several complementary analyses of the genetic data and inferred from demographic history (0.26 to 0.36 Mya). This genetic variation and demographic processes should become the baseline information for evaluating genetic effects of stock enhancement program and ongoing conservation decision making.
    Original languageEnglish
    Pages (from-to)763-774
    Number of pages12
    JournalEnvironmental Biology of Fishes
    Volume98
    Issue number3
    DOIs
    Publication statusPublished - 2015

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    stock enhancement
    demographic history
    plateaus
    demographic statistics
    plateau
    genetic variation
    China
    fish
    phylogenetics
    conservation management
    endemism
    endangered species
    mitochondrial DNA
    population structure
    decision making
    history
    genetic diversity
    ecosystem
    wild fish
    phylogeny

    Cite this

    @article{2215b4b9dcac42e2a9629abe88d30083,
    title = "Genetic diversity and demographic history of the endangered and endemic fish (Platypharodon extremus): implications for stock enhancement in Qinghai Tibetan Plateau",
    abstract = "Release of captive bred individuals into the wild is now a conservation management approach to increase the depleted natural wildlife populations. Such method has been initiated for conservation of wild fish population on Qinghai Tibetan Plateau (QTP), a region of high level of species endemism. Platypharodon extremus is an endemic schizothoracine fish species and a dominated species in the plateau water ecosystem of the QTP in the past, it is now enlisted as an endangered species. However, phylogenetic and genetic information have not been previously considered in the ongoing stock enhancement program. In this study, genetic and demographic processes of the populations across the distribution of this species were assessed, using the mitochondrial DNA control region and Cyt-b.We found that all populations displayed low nucleotide diversity suggesting severe historical bottleneck events and high haplotype diversity indicating recent population expansion. Both the phylogenetic tree and the minimum spanning tree showed no significant genealogical structures corresponding to sampling locations. Population histories including bottleneck, exponential expansion and the absence of population structure indicate that demographic processes highly influenced genetic variation within and among populations of P. extreums. The data presented is consistent with a historical bottleneck and recent population expansion for all four populations based on several complementary analyses of the genetic data and inferred from demographic history (0.26 to 0.36 Mya). This genetic variation and demographic processes should become the baseline information for evaluating genetic effects of stock enhancement program and ongoing conservation decision making.",
    keywords = "Qinghai Tibetan Plateau (QTP), Platypharodon extremus, Genetic structure, Demographic history, Stock enhancement.",
    author = "Junhu Su and Weihong Ji and Yanping Zhang and Dianne GLEESON and Lou Zhongyu and Jing Ren and Yanming Wei",
    year = "2015",
    doi = "10.1007/s10641-014-0310-3",
    language = "English",
    volume = "98",
    pages = "763--774",
    journal = "Environmental Biology of Fishes",
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    }

    Genetic diversity and demographic history of the endangered and endemic fish (Platypharodon extremus): implications for stock enhancement in Qinghai Tibetan Plateau. / Su, Junhu; Ji, Weihong; Zhang, Yanping; GLEESON, Dianne; Zhongyu, Lou; Ren, Jing; Wei, Yanming.

    In: Environmental Biology of Fishes, Vol. 98, No. 3, 2015, p. 763-774.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Genetic diversity and demographic history of the endangered and endemic fish (Platypharodon extremus): implications for stock enhancement in Qinghai Tibetan Plateau

    AU - Su, Junhu

    AU - Ji, Weihong

    AU - Zhang, Yanping

    AU - GLEESON, Dianne

    AU - Zhongyu, Lou

    AU - Ren, Jing

    AU - Wei, Yanming

    PY - 2015

    Y1 - 2015

    N2 - Release of captive bred individuals into the wild is now a conservation management approach to increase the depleted natural wildlife populations. Such method has been initiated for conservation of wild fish population on Qinghai Tibetan Plateau (QTP), a region of high level of species endemism. Platypharodon extremus is an endemic schizothoracine fish species and a dominated species in the plateau water ecosystem of the QTP in the past, it is now enlisted as an endangered species. However, phylogenetic and genetic information have not been previously considered in the ongoing stock enhancement program. In this study, genetic and demographic processes of the populations across the distribution of this species were assessed, using the mitochondrial DNA control region and Cyt-b.We found that all populations displayed low nucleotide diversity suggesting severe historical bottleneck events and high haplotype diversity indicating recent population expansion. Both the phylogenetic tree and the minimum spanning tree showed no significant genealogical structures corresponding to sampling locations. Population histories including bottleneck, exponential expansion and the absence of population structure indicate that demographic processes highly influenced genetic variation within and among populations of P. extreums. The data presented is consistent with a historical bottleneck and recent population expansion for all four populations based on several complementary analyses of the genetic data and inferred from demographic history (0.26 to 0.36 Mya). This genetic variation and demographic processes should become the baseline information for evaluating genetic effects of stock enhancement program and ongoing conservation decision making.

    AB - Release of captive bred individuals into the wild is now a conservation management approach to increase the depleted natural wildlife populations. Such method has been initiated for conservation of wild fish population on Qinghai Tibetan Plateau (QTP), a region of high level of species endemism. Platypharodon extremus is an endemic schizothoracine fish species and a dominated species in the plateau water ecosystem of the QTP in the past, it is now enlisted as an endangered species. However, phylogenetic and genetic information have not been previously considered in the ongoing stock enhancement program. In this study, genetic and demographic processes of the populations across the distribution of this species were assessed, using the mitochondrial DNA control region and Cyt-b.We found that all populations displayed low nucleotide diversity suggesting severe historical bottleneck events and high haplotype diversity indicating recent population expansion. Both the phylogenetic tree and the minimum spanning tree showed no significant genealogical structures corresponding to sampling locations. Population histories including bottleneck, exponential expansion and the absence of population structure indicate that demographic processes highly influenced genetic variation within and among populations of P. extreums. The data presented is consistent with a historical bottleneck and recent population expansion for all four populations based on several complementary analyses of the genetic data and inferred from demographic history (0.26 to 0.36 Mya). This genetic variation and demographic processes should become the baseline information for evaluating genetic effects of stock enhancement program and ongoing conservation decision making.

    KW - Qinghai Tibetan Plateau (QTP)

    KW - Platypharodon extremus

    KW - Genetic structure

    KW - Demographic history

    KW - Stock enhancement.

    U2 - 10.1007/s10641-014-0310-3

    DO - 10.1007/s10641-014-0310-3

    M3 - Article

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    JF - Environmental Biology of Fishes

    SN - 0378-1909

    IS - 3

    ER -