Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer

D. A. Crook, D. J. Buckle, Q. Allsop, W. Baldwin, T. M. Saunders, P. M. Kyne, J. D. Woodhead, Roland Maas, Brien Roberts, M. M. Douglas

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420-1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.

    Original languageEnglish
    Pages (from-to)1554-1566
    Number of pages13
    JournalMarine and Freshwater Research
    Volume68
    Issue number8
    DOIs
    Publication statusPublished - 2017

    Fingerprint

    Otolithic Membrane
    Lates calcarifer
    Telemetry
    telemetry
    otolith
    otoliths
    Acoustics
    acoustics
    chemistry
    Rivers
    Alligators and Crocodiles
    Fishes
    life history
    Fresh Water
    alligators
    wet season
    fish
    Hydrology
    rivers
    river

    Cite this

    Crook, D. A. ; Buckle, D. J. ; Allsop, Q. ; Baldwin, W. ; Saunders, T. M. ; Kyne, P. M. ; Woodhead, J. D. ; Maas, Roland ; Roberts, Brien ; Douglas, M. M. / Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer. In: Marine and Freshwater Research. 2017 ; Vol. 68, No. 8. pp. 1554-1566.
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    abstract = "Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420-1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.",
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    author = "Crook, {D. A.} and Buckle, {D. J.} and Q. Allsop and W. Baldwin and Saunders, {T. M.} and Kyne, {P. M.} and Woodhead, {J. D.} and Roland Maas and Brien Roberts and Douglas, {M. M.}",
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    Crook, DA, Buckle, DJ, Allsop, Q, Baldwin, W, Saunders, TM, Kyne, PM, Woodhead, JD, Maas, R, Roberts, B & Douglas, MM 2017, 'Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer', Marine and Freshwater Research, vol. 68, no. 8, pp. 1554-1566. https://doi.org/10.1071/MF16177

    Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer. / Crook, D. A.; Buckle, D. J.; Allsop, Q.; Baldwin, W.; Saunders, T. M.; Kyne, P. M.; Woodhead, J. D.; Maas, Roland; Roberts, Brien; Douglas, M. M.

    In: Marine and Freshwater Research, Vol. 68, No. 8, 2017, p. 1554-1566.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer

    AU - Crook, D. A.

    AU - Buckle, D. J.

    AU - Allsop, Q.

    AU - Baldwin, W.

    AU - Saunders, T. M.

    AU - Kyne, P. M.

    AU - Woodhead, J. D.

    AU - Maas, Roland

    AU - Roberts, Brien

    AU - Douglas, M. M.

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    N2 - Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420-1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.

    AB - Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420-1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.

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    KW - contingent hypothesis

    KW - diadromy

    KW - fish migration

    KW - Sr.

    KW - Sr/86

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    SN - 0067-1940

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