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<p>Mercury (Hg) is a toxic metal with the ability to bioaccumulate and biomagnify in biota. The grey smooth-hound (<i>Mustelus californicus</i>), being a residential species, may reflect the environmental conditions associated with these contaminants. The purpose of this investigation was to assess the levels of Hg in the muscle and liver of the <i>M. californicus</i> shark, from the northern Pacific coast of Mexico. Body length, sex, and collection location were included to investigate variability in Hg concentrations. In both tissues, mean wet weight Hg concentrations were low (± standard deviation; muscle: Hg: 0.17 ± 0.09&#xa0;mg/kg; liver: 0.23 ± 0.08&#xa0;mg/kg). Muscle Hg concentrations were below the maximum limit allowed for human consumption (1.0&#xa0;mg/kg). Sex and body length had no significant relationship with Hg accumulation. Due to the low levels of Hg in <i>M. californicus</i> and its use as a bioindicator of environmental health, it can be considered that the study area represents a good reference quality for the concentrations of this metal.</p>

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Mercury Concentrations in Muscle and Liver From the Grey Smooth-Hound (Mustelus californicus) Off Baja California Sur, Mexico

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • Ariagna Lara,
  • Abril Karim Romo-Piñera,
  • David Corro-Espinosa,
  • Martín Gabriel Frías-Espericueta,
  • Ofelia Escobar-Sánchez

摘要

Mercury (Hg) is a toxic metal with the ability to bioaccumulate and biomagnify in biota. The grey smooth-hound (Mustelus californicus), being a residential species, may reflect the environmental conditions associated with these contaminants. The purpose of this investigation was to assess the levels of Hg in the muscle and liver of the M. californicus shark, from the northern Pacific coast of Mexico. Body length, sex, and collection location were included to investigate variability in Hg concentrations. In both tissues, mean wet weight Hg concentrations were low (± standard deviation; muscle: Hg: 0.17 ± 0.09 mg/kg; liver: 0.23 ± 0.08 mg/kg). Muscle Hg concentrations were below the maximum limit allowed for human consumption (1.0 mg/kg). Sex and body length had no significant relationship with Hg accumulation. Due to the low levels of Hg in M. californicus and its use as a bioindicator of environmental health, it can be considered that the study area represents a good reference quality for the concentrations of this metal.