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From egg to hatchling: preferential retention of fatty acid biomarkers in young-of-the-year Port Jackson sharks Heterodontus portusjacksoni

Authors

  • C. L. Beckmann,

    Corresponding author
    1. School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
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  • J. G. Mitchell,

    1. School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
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  • L. Seuront,

    1. School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
    2. South Australian Research and Development Institute (SARDI), Aquatic Sciences Centre, Adelaide, South Australia, Australia
    3. Centre National de la Recherche Scientifique, Laboratoire d'Océanologie et de Géosciences, UMR 8187, Université des Sciences et Technologies de Lille, Station Marine, Wimereux, France
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  • D.A.J. Stone,

    1. School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
    2. South Australian Research and Development Institute (SARDI), Aquatic Sciences Centre, Adelaide, South Australia, Australia
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  • C. Huveneers

    1. School of Biological Sciences, Flinders University, Adelaide, South Australia, Australia
    2. South Australian Research and Development Institute (SARDI), Aquatic Sciences Centre, Adelaide, South Australia, Australia
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Abstract

The muscle and liver fatty acid composition of young-of-the-year (YOY) Port Jackson sharks Heterodontus portusjacksoni were investigated to determine the effects of a known dietary lipid source v. maternal input as demonstrated by egg yolk fatty acid profiles. Ten Heterodontus portusjacksoni egg yolks were collected in situ and compared with four hatched H. portusjacksoni fed a known diet in a controlled feeding experiment of 185 days. This study demonstrated that fatty acids are probably conservatively transferred from egg yolks to YOY H. portusjacksoni, while diet did not have a large effect on the fatty acid composition of the liver or muscle.

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