Correia Edna, Granadeiro José Pedro, Vale Carlos, Catry Teresa
Centro de Estudos do Ambiente e do Mar, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal.
Centro de Estudos do Ambiente e do Mar, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal.
Mar Pollut Bull. 2022 May;178:113555. doi: 10.1016/j.marpolbul.2022.113555. Epub 2022 Mar 23.
We report the concentration of 13 elements in the muscle and liver of 17 coastal fish species of the Bijagós Archipelago, Guinea-Bissau, and link element concentrations to trophic ecology as assessed by carbon (δC) and nitrogen (δN) stable isotopes. We found higher concentrations of Hg, Fe, Mn, Cu, Zn, Se and As in liver as compared to muscle tissue, and the opposite pattern for Sr and Ca in all fish species. The concentration of Hg and Se in muscle samples increased significantly with δN, suggesting a biomagnification of these elements in this food chain. The concentrations of Ca and Sr, Fe and Cr, Ca and Mn, and Fe and Mn were positively correlated to each other in more than 50% of the studied species. Fish constitute the most important animal protein source for people in Guinea-Bissau, and thus assessing the concentrations of potentially toxic elements is relevant for human health.
我们报告了几内亚比绍比热戈斯群岛17种沿海鱼类肌肉和肝脏中13种元素的浓度，并将元素浓度与通过碳（δC）和氮（δN）稳定同位素评估的营养生态学联系起来。我们发现，与肌肉组织相比，肝脏中汞、铁、锰、铜、锌、硒和砷的浓度更高，而在所有鱼类中，锶和钙的情况则相反。肌肉样本中汞和硒的浓度随δN显著增加，表明这些元素在该食物链中存在生物放大作用。在超过50%的研究物种中，钙和锶、铁和铬、钙和锰以及铁和锰的浓度呈正相关。鱼类是几内亚比绍人们最重要的动物蛋白来源，因此评估潜在有毒元素的浓度对人类健康具有重要意义。
