Water Research Group, Unit for Environmental Sciences and Management, North-West University, 11 Hoffman St, Potchefstroom, 2520, South Africa.
Bull Environ Contam Toxicol. 2023 Sep 10;111(3):34. doi: 10.1007/s00128-023-03795-5.
Many rural communities in Mozambique get their income from fisheries, as well as consume fish as an inexpensive source of protein. In Mozambique, fish consumption from small-scale fisheries dependent families can range between 60 and 150 kg/person/year. Anguillid eels have important social value to vulnerable local communities in the Incomati Basin. Anguillid eels in the lower Incomati Basin are targeted for consumption, as well as cultural rituals by traditional healers. The aim of the present study was to determine trace element concentrations in environmental matrices, bioaccumulation patterns in muscle and liver tissue of two Anguilla species (Anguilla mossambica and Anguilla marmorata), as well as the chronic health risk these elements pose to regular consumers in the lower Incomati River. Bioaccumulation of elements from the water had a higher effect on both muscle and liver tissues, where only the bioaccumulation of Pb in the sediments played a major role. From the human health risk assessment, Hg pose non-carcinogenic risk, whereas As, Cr, and Ni pose carcinogenic risks.
莫桑比克的许多农村社区从渔业中获得收入,并且将鱼类作为廉价蛋白质的来源。在莫桑比克,依赖小规模渔业的家庭的鱼类消费范围在每人每年 60 至 150 公斤之间。鳗鱼在因科马蒂流域的弱势当地社区具有重要的社会价值。因科马蒂河流域下游的鳗鱼被作为食物,以及传统治疗师进行文化仪式的对象。本研究旨在确定环境基质中的微量元素浓度、两种鳗鱼(莫桑比克鳗 Anguilla mossambica 和大理石鳗 Anguilla marmorata)肌肉和肝脏组织中的生物累积模式,以及这些元素对因科马蒂河下游的常规消费者造成的慢性健康风险。水中元素的生物累积对肌肉和肝脏组织有更高的影响,只有沉积物中的 Pb 生物累积起着主要作用。从人类健康风险评估来看,Hg 存在非致癌风险,而 As、Cr 和 Ni 则存在致癌风险。