Going, going, gone? Loss of genetic diversity in two critically endangered Australian freshwater fishes, Scaturiginichthys vermeilipinnis and Chlamydogobius squamigenus, from Great Artesian Basin springs at Edgbaston, Queensland, Australia

L Faulks, A Kerezsy, Peter UNMACK, J Johnson, J Hughes

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    Artesian springs are particularly sensitive freshwater ecosystems, characterized by specialized flora and fauna which, owing to their isolation, are often endemic. Thus, protection of spring habitats and endemic spring biota is important for biodiversity conservation, particularly because human impacts such as invasive species, habitat destruction, and fragmentation can have such devastating effects. This study investigated the mitochondrial DNA (mtDNA) genetic diversity and structure of two critically endangered (IUCN) freshwater fish species: red-finned blue-eye Scaturiginichthys vermeilipinnis, and Edgbaston goby Chlamydogobius squamigenus, with the aim of assisting management agencies to establish relocated populations that conserve the genetic integrity and evolutionary potential of both species. 2862 bp from multiple mtDNA genes were amplified from 111 red-finned blue-eye individuals (17 from the 1990s and 94 from 2010), and a 660 bp segment of mtDNA cytochrome b was amplified from 111 Edgbaston goby individuals (from 2010). In total, 14 concatenated mtDNA haplotypes were identified in red-finned blue-eye and three cytb haplotypes were identified in Edgbaston goby. Overall assessment of the genetic diversity and structure of the endemic fish fauna from the Edgbaston springs revealed low levels of diversity in both species and a loss of haplotypes in red-finned blue-eye over time. In addition, both species displayed significant genetic structure: at the spring scale for red-finned blue-eye and at the spring group scale for Edgbaston goby. It is concluded that without the appropriate management of relocated populations, such as considering genetic structure and diversity and selecting high quality habitats, these species are at a severe risk of losing evolutionary potential and becoming extinct. This study provides a valuable example for conservation managers of the contribution that population genetic studies can make regarding the adaptive management of endangered species.

    Original languageEnglish
    Pages (from-to)39-50
    Number of pages12
    JournalAquatic Conservation (Print)
    Volume27
    Issue number1
    DOIs
    Publication statusPublished - 2017

    Fingerprint

    freshwater fish
    Queensland
    mitochondrial DNA
    genetic structure
    basins
    eyes
    genetic variation
    fish
    basin
    haplotypes
    population genetics
    fauna
    adaptive management
    freshwater ecosystem
    habitat fragmentation
    habitat quality
    endangered species
    anthropogenic effect
    invasive species
    cytochrome

    Cite this

    @article{2058e5602e2f475e866049a905829279,
    title = "Going, going, gone? Loss of genetic diversity in two critically endangered Australian freshwater fishes, Scaturiginichthys vermeilipinnis and Chlamydogobius squamigenus, from Great Artesian Basin springs at Edgbaston, Queensland, Australia",
    abstract = "Artesian springs are particularly sensitive freshwater ecosystems, characterized by specialized flora and fauna which, owing to their isolation, are often endemic. Thus, protection of spring habitats and endemic spring biota is important for biodiversity conservation, particularly because human impacts such as invasive species, habitat destruction, and fragmentation can have such devastating effects. This study investigated the mitochondrial DNA (mtDNA) genetic diversity and structure of two critically endangered (IUCN) freshwater fish species: red-finned blue-eye Scaturiginichthys vermeilipinnis, and Edgbaston goby Chlamydogobius squamigenus, with the aim of assisting management agencies to establish relocated populations that conserve the genetic integrity and evolutionary potential of both species. 2862 bp from multiple mtDNA genes were amplified from 111 red-finned blue-eye individuals (17 from the 1990s and 94 from 2010), and a 660 bp segment of mtDNA cytochrome b was amplified from 111 Edgbaston goby individuals (from 2010). In total, 14 concatenated mtDNA haplotypes were identified in red-finned blue-eye and three cytb haplotypes were identified in Edgbaston goby. Overall assessment of the genetic diversity and structure of the endemic fish fauna from the Edgbaston springs revealed low levels of diversity in both species and a loss of haplotypes in red-finned blue-eye over time. In addition, both species displayed significant genetic structure: at the spring scale for red-finned blue-eye and at the spring group scale for Edgbaston goby. It is concluded that without the appropriate management of relocated populations, such as considering genetic structure and diversity and selecting high quality habitats, these species are at a severe risk of losing evolutionary potential and becoming extinct. This study provides a valuable example for conservation managers of the contribution that population genetic studies can make regarding the adaptive management of endangered species.",
    keywords = "abstraction, alien species, endangered species, fish, genetics, springs",
    author = "L Faulks and A Kerezsy and Peter UNMACK and J Johnson and J Hughes",
    year = "2017",
    doi = "10.1002/aqc.2684",
    language = "English",
    volume = "27",
    pages = "39--50",
    journal = "Aquatic Conservation (Print)",
    issn = "1052-7613",
    publisher = "John Wiley & Sons",
    number = "1",

    }

    TY - JOUR

    T1 - Going, going, gone? Loss of genetic diversity in two critically endangered Australian freshwater fishes, Scaturiginichthys vermeilipinnis and Chlamydogobius squamigenus, from Great Artesian Basin springs at Edgbaston, Queensland, Australia

    AU - Faulks, L

    AU - Kerezsy, A

    AU - UNMACK, Peter

    AU - Johnson, J

    AU - Hughes, J

    PY - 2017

    Y1 - 2017

    N2 - Artesian springs are particularly sensitive freshwater ecosystems, characterized by specialized flora and fauna which, owing to their isolation, are often endemic. Thus, protection of spring habitats and endemic spring biota is important for biodiversity conservation, particularly because human impacts such as invasive species, habitat destruction, and fragmentation can have such devastating effects. This study investigated the mitochondrial DNA (mtDNA) genetic diversity and structure of two critically endangered (IUCN) freshwater fish species: red-finned blue-eye Scaturiginichthys vermeilipinnis, and Edgbaston goby Chlamydogobius squamigenus, with the aim of assisting management agencies to establish relocated populations that conserve the genetic integrity and evolutionary potential of both species. 2862 bp from multiple mtDNA genes were amplified from 111 red-finned blue-eye individuals (17 from the 1990s and 94 from 2010), and a 660 bp segment of mtDNA cytochrome b was amplified from 111 Edgbaston goby individuals (from 2010). In total, 14 concatenated mtDNA haplotypes were identified in red-finned blue-eye and three cytb haplotypes were identified in Edgbaston goby. Overall assessment of the genetic diversity and structure of the endemic fish fauna from the Edgbaston springs revealed low levels of diversity in both species and a loss of haplotypes in red-finned blue-eye over time. In addition, both species displayed significant genetic structure: at the spring scale for red-finned blue-eye and at the spring group scale for Edgbaston goby. It is concluded that without the appropriate management of relocated populations, such as considering genetic structure and diversity and selecting high quality habitats, these species are at a severe risk of losing evolutionary potential and becoming extinct. This study provides a valuable example for conservation managers of the contribution that population genetic studies can make regarding the adaptive management of endangered species.

    AB - Artesian springs are particularly sensitive freshwater ecosystems, characterized by specialized flora and fauna which, owing to their isolation, are often endemic. Thus, protection of spring habitats and endemic spring biota is important for biodiversity conservation, particularly because human impacts such as invasive species, habitat destruction, and fragmentation can have such devastating effects. This study investigated the mitochondrial DNA (mtDNA) genetic diversity and structure of two critically endangered (IUCN) freshwater fish species: red-finned blue-eye Scaturiginichthys vermeilipinnis, and Edgbaston goby Chlamydogobius squamigenus, with the aim of assisting management agencies to establish relocated populations that conserve the genetic integrity and evolutionary potential of both species. 2862 bp from multiple mtDNA genes were amplified from 111 red-finned blue-eye individuals (17 from the 1990s and 94 from 2010), and a 660 bp segment of mtDNA cytochrome b was amplified from 111 Edgbaston goby individuals (from 2010). In total, 14 concatenated mtDNA haplotypes were identified in red-finned blue-eye and three cytb haplotypes were identified in Edgbaston goby. Overall assessment of the genetic diversity and structure of the endemic fish fauna from the Edgbaston springs revealed low levels of diversity in both species and a loss of haplotypes in red-finned blue-eye over time. In addition, both species displayed significant genetic structure: at the spring scale for red-finned blue-eye and at the spring group scale for Edgbaston goby. It is concluded that without the appropriate management of relocated populations, such as considering genetic structure and diversity and selecting high quality habitats, these species are at a severe risk of losing evolutionary potential and becoming extinct. This study provides a valuable example for conservation managers of the contribution that population genetic studies can make regarding the adaptive management of endangered species.

    KW - abstraction

    KW - alien species

    KW - endangered species

    KW - fish

    KW - genetics

    KW - springs

    UR - http://www.scopus.com/inward/record.url?scp=84977123753&partnerID=8YFLogxK

    UR - http://www.mendeley.com/research/going-going-gone-loss-genetic-diversity-two-critically-endangered-australian-freshwater-fishes-scatu

    U2 - 10.1002/aqc.2684

    DO - 10.1002/aqc.2684

    M3 - Article

    VL - 27

    SP - 39

    EP - 50

    JO - Aquatic Conservation (Print)

    JF - Aquatic Conservation (Print)

    SN - 1052-7613

    IS - 1

    ER -