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<p>We analyzed mercury concentrations in two epipelagic fish species <i>Diodon eydouxii</i> (Pelagic Porcupinefish) and <i>Hirundichthys affinis</i> (Fourwing Flyingfish) and one mesopelagic species <i>Howella atlantica</i> (Atlantic Pelagic Basslet) from the Western Equatorial Atlantic Ocean (WEAO), examining their relationship with total length. Mercury concentrations varied significantly, with the highest levels in <i>H. affinis</i>. Two species showed a moderate positive correlation between Hg levels and body size. This study provides the first data on Hg bioaccumulation in these species from the WEAO and highlights the need for larger sample sizes and broader age ranges to better understand mercury transfer in pelagic food webs.</p>

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Mercury Concentration in Epipelagic and Mesopelagic Fishes from the Western Equatorial Atlantic Ocean

  • 期刊论文

  • 发表日期：

    2025年9月4日

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  • Cyntia Rafaela Ferreira de Moraes,
  • Lilian Glória Xavier,
  • Guelson Batista da Silva,
  • Vicente Vieira Faria,
  • Luiz Drude de Lacerda

摘要

We analyzed mercury concentrations in two epipelagic fish species Diodon eydouxii (Pelagic Porcupinefish) and Hirundichthys affinis (Fourwing Flyingfish) and one mesopelagic species Howella atlantica (Atlantic Pelagic Basslet) from the Western Equatorial Atlantic Ocean (WEAO), examining their relationship with total length. Mercury concentrations varied significantly, with the highest levels in H. affinis. Two species showed a moderate positive correlation between Hg levels and body size. This study provides the first data on Hg bioaccumulation in these species from the WEAO and highlights the need for larger sample sizes and broader age ranges to better understand mercury transfer in pelagic food webs.