Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Avenida IPN, s/n Colonia Playa Palo de Santa Rita, C.P. 23096 La Paz, Baja California Sur, Mexico.
Instituto Politécnico Nacional (IPN), Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Calle 30 de Junio de 1520, Barrio la Laguna Ticomán, C.P.07340 Ciudad de México, Mexico.
Mar Pollut Bull. 2020 Jul;156:111192. doi: 10.1016/j.marpolbul.2020.111192. Epub 2020 Apr 28.
Pelagic thresher shark (Alopias pelagicus) is a circumglobal species with high ecological and economic importance. Concentrations of mercury, selenium and cadmium in the muscle and liver tissues of A. pelagicus captured from Baja California Sur, Mexico were determined for assessing the potential human hazard. Results revealed that the average concentrations of Hg (0.76 mg kg) and Cd (0.18 mg kg) in muscle tissues were below the maximum permissible limits for human consumption. Se in the muscles were relatively low (mean: 0.30 mg kg ) resulting in a molar excess of Hg over Se. Average levels of hepatic Cd were extremely higher than the maximum limit for consumption. Organotropism of Hg was muscle > liver, whereas Se and Cd presented an order of liver > muscle. Biomagnification Factor (BMF) emphasized the trophic transfer of elements. Selenium Health Benefit value was negative (-3.76) posing potential health risks demanding regular monitoring for health risks.
远洋长尾鲨（Alopias pelagicus）是一种分布广泛的物种，具有重要的生态和经济意义。本研究旨在评估其对人类的潜在危害，检测了来自墨西哥下加利福尼亚州的远洋长尾鲨肌肉和肝脏组织中的汞、硒和镉浓度。结果表明，肌肉组织中汞（0.76mg/kg）和镉（0.18mg/kg）的平均浓度低于人类食用的最大允许限量。肌肉中的硒含量相对较低（平均值：0.30mg/kg），导致汞对硒的摩尔过量。肝脏中镉的平均水平远高于最大食用限量。汞在器官中的分布为肌肉＞肝脏，而硒和镉的分布则为肝脏＞肌肉。生物放大因子（BMF）强调了元素的营养转移。硒的健康效益值为负数（-3.76），存在潜在的健康风险，需要定期监测健康风险。
