Instituto Nacional de Pesquisas do Pantanal - INPP, Universidade Federal do Mato Grosso, Av. Fernando Corrêa da Costa, no 2367, Cuiabá, MT, 78060-900, Brazil.
Universidade Federal de Mato Grosso do Sul, Programa de Pós-Graduação em Ecologia e Conservação, Instituto de Biociências, Cidade Universitária s/n, Campo Grande, MS, 79070-900, Brazil.
Arch Environ Contam Toxicol. 2024 Jul;87(1):16-33. doi: 10.1007/s00244-024-01072-y. Epub 2024 Jun 9.
The present study investigated the levels of As, Ag, Al, Ba, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Se, and Zn in muscle samples of six fish species (Pygocentrus nattereri, Serrasalmus marginatus, Mylossoma duriventre, Leporinus friderici, Pimelodus argenteus, and P. pantaneiro) highly consumed by local riverine and non-resident people in middle Miranda River, southern Brazilian Pantanal. Significant differences were detected for Ba, Fe, Mn, and Zn levels among the analyzed species. Pairwise comparison detected significant differences in element levels between species with similar diets, which implies that other factors, instead of species' feeding habits, could be involved in distinct levels of element bioaccumulation. Significant correlations between body size and concentrations were found for Ba in P. nattereri (moderate positive correlation), and for Mn in M. duriventre (weak positive correlation) and P. argenteus (moderate negative correlation). Levels exceeding tolerable daily intake (TDI) were found for Pb maximum concentrations in P. nattereri, M. duriventre, L. friderici, P. argenteus, and P. pantaneiro, and for Cd maximum concentration in P. argenteus. Health risk assessment indicated considerable risk only for the worst-case scenario (calculated from maximum concentrations) for all species. Adopting a Pb monitoring program in biotic and abiotic compartments in Miranda River is strongly recommended.
本研究调查了在米纳斯吉拉斯州南部潘塔纳尔地区米拉达河，当地河流和非居民高度消费的 6 种鱼类（胭脂鱼、锯齿短盖巨脂鲤、南美拟鲿、小口脂鲤、阿根廷脂鲤和齐氏罗非鱼）肌肉样本中的砷、银、铝、钡、镉、铬、铜、铁、汞、锰、铅、硒和锌的含量。在所分析的物种中，钡、铁、锰和锌的水平存在显著差异。对具有相似饮食的物种之间的元素水平进行成对比较，发现存在显著差异，这意味着除了物种的饮食习惯外，其他因素可能参与了元素生物累积的不同水平。在胭脂鱼中，钡的身体大小与浓度之间存在中度正相关，在南美拟鲿和阿根廷脂鲤中，锰的身体大小与浓度之间存在弱正相关和中度负相关。在胭脂鱼、南美拟鲿、小口脂鲤、阿根廷脂鲤和齐氏罗非鱼中，铅的最大浓度超过了可耐受每日摄入量（TDI），在阿根廷脂鲤中，镉的最大浓度也超过了 TDI。健康风险评估表明，对于所有物种，只有在最坏情况下（根据最大浓度计算）才会存在相当大的风险。强烈建议在米拉达河的生物和非生物环境中采用铅监测计划。
