Limited genetic structure among broad-scale regions for two commercially harvested, tropical deep-water snappers in New Caledonia

Kim L. Loeun, Sharyn Goldstien, Dianne GLEESON, Simon Nicol, Corey J A Bradshaw

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    We estimated the spatial population connectivity of Etelis carbunculus and E. coruscans based on measures of population genetic structure using the mitochondrial DNA control region. We collected samples from three areas separated by a minimum of 200 km around New Caledonia. We identified two separate genetic groups for E. carbunculus and a single group for E. coruscans. There were many singleton haplotypes distributed among geographic regions, indicating minimal spatial differentiation in genetic structure between regions for each species, although one of the genetic groups for E. carbunculus was in only two of the three regions. Conservation and management directives should consider both species as a single genetic stock among these three widespread regions. Our results provide evidence that stock structure might be less variable in the South Pacific than reported elsewhere, possibly indicating that trans-boundary management may be required in this region for deep-water snapper fisheries. Further refinement (including taxonomy) is required for E. carbunculus to characterize the different lineages observed.
    Original languageEnglish
    Pages (from-to)13-19
    Number of pages7
    JournalFisheries Science
    Volume80
    Issue number1
    DOIs
    Publication statusPublished - 2014

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    snapper
    New Caledonia
    genetic structure
    deep water
    water
    population genetics
    haplotypes
    mitochondrial DNA
    fisheries
    taxonomy
    genetic variation
    connectivity
    fishery
    sampling

    Cite this

    Loeun, Kim L. ; Goldstien, Sharyn ; GLEESON, Dianne ; Nicol, Simon ; Bradshaw, Corey J A. / Limited genetic structure among broad-scale regions for two commercially harvested, tropical deep-water snappers in New Caledonia. In: Fisheries Science. 2014 ; Vol. 80, No. 1. pp. 13-19.
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    abstract = "We estimated the spatial population connectivity of Etelis carbunculus and E. coruscans based on measures of population genetic structure using the mitochondrial DNA control region. We collected samples from three areas separated by a minimum of 200 km around New Caledonia. We identified two separate genetic groups for E. carbunculus and a single group for E. coruscans. There were many singleton haplotypes distributed among geographic regions, indicating minimal spatial differentiation in genetic structure between regions for each species, although one of the genetic groups for E. carbunculus was in only two of the three regions. Conservation and management directives should consider both species as a single genetic stock among these three widespread regions. Our results provide evidence that stock structure might be less variable in the South Pacific than reported elsewhere, possibly indicating that trans-boundary management may be required in this region for deep-water snapper fisheries. Further refinement (including taxonomy) is required for E. carbunculus to characterize the different lineages observed.",
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    author = "Loeun, {Kim L.} and Sharyn Goldstien and Dianne GLEESON and Simon Nicol and Bradshaw, {Corey J A}",
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    Limited genetic structure among broad-scale regions for two commercially harvested, tropical deep-water snappers in New Caledonia. / Loeun, Kim L.; Goldstien, Sharyn; GLEESON, Dianne; Nicol, Simon; Bradshaw, Corey J A.

    In: Fisheries Science, Vol. 80, No. 1, 2014, p. 13-19.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Limited genetic structure among broad-scale regions for two commercially harvested, tropical deep-water snappers in New Caledonia

    AU - Loeun, Kim L.

    AU - Goldstien, Sharyn

    AU - GLEESON, Dianne

    AU - Nicol, Simon

    AU - Bradshaw, Corey J A

    PY - 2014

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    AB - We estimated the spatial population connectivity of Etelis carbunculus and E. coruscans based on measures of population genetic structure using the mitochondrial DNA control region. We collected samples from three areas separated by a minimum of 200 km around New Caledonia. We identified two separate genetic groups for E. carbunculus and a single group for E. coruscans. There were many singleton haplotypes distributed among geographic regions, indicating minimal spatial differentiation in genetic structure between regions for each species, although one of the genetic groups for E. carbunculus was in only two of the three regions. Conservation and management directives should consider both species as a single genetic stock among these three widespread regions. Our results provide evidence that stock structure might be less variable in the South Pacific than reported elsewhere, possibly indicating that trans-boundary management may be required in this region for deep-water snapper fisheries. Further refinement (including taxonomy) is required for E. carbunculus to characterize the different lineages observed.

    KW - Deep-water snappers

    KW - Mitochondrial DNA control region

    KW - Population structure

    KW - South Pacific

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    KW - Trans-boundary management.

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