Assessment of stocking effectiveness for Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia

Jamin Forbes, Robyn Watts, Wayne Robinson, Lee Baumgartner, Prue McGuffie, Leo Cameron, David Crook

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Stock enhancement is a management tool used for fishery recovery worldwide, yet the success of many stocking programs remains unquantified. Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) are important Australian recreational target species that have experienced widespread decline. Stocking of these species has been undertaken for decades, with limited assessment of effectiveness. A batch marking and recapture approach was applied to assess stocked Murray cod and golden perch survival, contributions to wild fisheries, and condition in rivers and impoundments. Stocked fish were marked with calcein. Marked fish were detected during surveys undertaken 3 years and 10 months from initial marking, and it is probable that marks will persist beyond this time. The proportion of calcein marked fish in the population sub-sample whose age was equal to, or less than, the number of years since release, varied by 7–94% for Murray cod, and 9–98% for golden perch. Higher proportions of marked fish were found in impoundments than rivers. Marked Murray cod had significantly steeper length–weight relationships (i.e. higher weight at a given length) to unmarked fish. Our results show that application of methods for discriminating stocked and wild fish provides critical information for the development of adaptive, location-specific stocking strategies.
    Original languageEnglish
    Pages (from-to)1410-1419
    Number of pages10
    JournalMarine and Freshwater Research
    Volume67
    Issue number10
    DOIs
    Publication statusPublished - 13 Oct 2016

    Fingerprint

    Maccullochella
    Maccullochella peelii peelii
    Perches
    Gadiformes
    South Australia
    impoundment
    Rivers
    Fishes
    rivers
    fish
    river
    Fisheries
    fisheries
    fishery
    wild fish
    stock enhancement
    application methods
    Macquaria ambigua
    stocking
    Weights and Measures

    Cite this

    Forbes, Jamin ; Watts, Robyn ; Robinson, Wayne ; Baumgartner, Lee ; McGuffie, Prue ; Cameron, Leo ; Crook, David. / Assessment of stocking effectiveness for Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia. In: Marine and Freshwater Research. 2016 ; Vol. 67, No. 10. pp. 1410-1419.
    @article{7ee5287780c84d7b8540fabe08801e5d,
    title = "Assessment of stocking effectiveness for Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia",
    abstract = "Stock enhancement is a management tool used for fishery recovery worldwide, yet the success of many stocking programs remains unquantified. Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) are important Australian recreational target species that have experienced widespread decline. Stocking of these species has been undertaken for decades, with limited assessment of effectiveness. A batch marking and recapture approach was applied to assess stocked Murray cod and golden perch survival, contributions to wild fisheries, and condition in rivers and impoundments. Stocked fish were marked with calcein. Marked fish were detected during surveys undertaken 3 years and 10 months from initial marking, and it is probable that marks will persist beyond this time. The proportion of calcein marked fish in the population sub-sample whose age was equal to, or less than, the number of years since release, varied by 7–94{\%} for Murray cod, and 9–98{\%} for golden perch. Higher proportions of marked fish were found in impoundments than rivers. Marked Murray cod had significantly steeper length–weight relationships (i.e. higher weight at a given length) to unmarked fish. Our results show that application of methods for discriminating stocked and wild fish provides critical information for the development of adaptive, location-specific stocking strategies.",
    author = "Jamin Forbes and Robyn Watts and Wayne Robinson and Lee Baumgartner and Prue McGuffie and Leo Cameron and David Crook",
    year = "2016",
    month = "10",
    day = "13",
    doi = "10.1071/MF15230",
    language = "English",
    volume = "67",
    pages = "1410--1419",
    journal = "Marine & Freshwater Research",
    issn = "0067-1940",
    publisher = "CSIRO Publishing",
    number = "10",

    }

    Assessment of stocking effectiveness for Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia. / Forbes, Jamin; Watts, Robyn; Robinson, Wayne; Baumgartner, Lee; McGuffie, Prue; Cameron, Leo; Crook, David.

    In: Marine and Freshwater Research, Vol. 67, No. 10, 13.10.2016, p. 1410-1419.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Assessment of stocking effectiveness for Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia

    AU - Forbes, Jamin

    AU - Watts, Robyn

    AU - Robinson, Wayne

    AU - Baumgartner, Lee

    AU - McGuffie, Prue

    AU - Cameron, Leo

    AU - Crook, David

    PY - 2016/10/13

    Y1 - 2016/10/13

    N2 - Stock enhancement is a management tool used for fishery recovery worldwide, yet the success of many stocking programs remains unquantified. Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) are important Australian recreational target species that have experienced widespread decline. Stocking of these species has been undertaken for decades, with limited assessment of effectiveness. A batch marking and recapture approach was applied to assess stocked Murray cod and golden perch survival, contributions to wild fisheries, and condition in rivers and impoundments. Stocked fish were marked with calcein. Marked fish were detected during surveys undertaken 3 years and 10 months from initial marking, and it is probable that marks will persist beyond this time. The proportion of calcein marked fish in the population sub-sample whose age was equal to, or less than, the number of years since release, varied by 7–94% for Murray cod, and 9–98% for golden perch. Higher proportions of marked fish were found in impoundments than rivers. Marked Murray cod had significantly steeper length–weight relationships (i.e. higher weight at a given length) to unmarked fish. Our results show that application of methods for discriminating stocked and wild fish provides critical information for the development of adaptive, location-specific stocking strategies.

    AB - Stock enhancement is a management tool used for fishery recovery worldwide, yet the success of many stocking programs remains unquantified. Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) are important Australian recreational target species that have experienced widespread decline. Stocking of these species has been undertaken for decades, with limited assessment of effectiveness. A batch marking and recapture approach was applied to assess stocked Murray cod and golden perch survival, contributions to wild fisheries, and condition in rivers and impoundments. Stocked fish were marked with calcein. Marked fish were detected during surveys undertaken 3 years and 10 months from initial marking, and it is probable that marks will persist beyond this time. The proportion of calcein marked fish in the population sub-sample whose age was equal to, or less than, the number of years since release, varied by 7–94% for Murray cod, and 9–98% for golden perch. Higher proportions of marked fish were found in impoundments than rivers. Marked Murray cod had significantly steeper length–weight relationships (i.e. higher weight at a given length) to unmarked fish. Our results show that application of methods for discriminating stocked and wild fish provides critical information for the development of adaptive, location-specific stocking strategies.

    UR - http://www.scopus.com/inward/record.url?scp=84988640819&partnerID=8YFLogxK

    U2 - 10.1071/MF15230

    DO - 10.1071/MF15230

    M3 - Article

    VL - 67

    SP - 1410

    EP - 1419

    JO - Marine & Freshwater Research

    JF - Marine & Freshwater Research

    SN - 0067-1940

    IS - 10

    ER -