Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
Bull Environ Contam Toxicol. 2024 Oct 11;113(4):48. doi: 10.1007/s00128-024-03963-1.
The Australian redclaw crayfish, Cherax quadricarinatus, has been introduced globally for aquacultural purposes, and invasive wild populations have established in several countries. An increase in population growth, has caused several low-income and rural communities to utilise it as an inexpensive protein source. Despite this introduction, limited research has been done on element accumulation, and the risks for human consumption. This study focused on elemental accumulation in C. quadricarinatus from two rivers in the Phongolo River Floodplain (PRF), South Africa. The non-carcinogenic and carcinogenic human health risks associated with its consumption were calculated. The accumulation order in the PRF was Zn > Cu > Pb > Cr > As > Ni > Hg > Cd. Elevated concentrations of As and Hg, as well as As, Cr, and Ni posed non-carcinogenic and carcinogenic risks, respectively. These results highlight that wild populations of C. quadricarinatus not only pose a threat to aquatic ecosystems but also potentially cause human health risks when consumed.
澳大利亚红螯螯虾（Cherax quadricarinatus）已被广泛引入全球用于水产养殖，并且已经在多个国家建立了入侵性的野生种群。由于种群数量的增加，一些低收入和农村社区已经将其作为一种廉价的蛋白质来源。尽管有这种引入，但对元素积累及其对人类食用的风险的研究有限。本研究重点研究了南非丰洛洛河洪泛区（PRF）两条河流中的 C. quadricarinatus 的元素积累情况。计算了与食用相关的非致癌和致癌人类健康风险。在 PRF 中的积累顺序为 Zn > Cu > Pb > Cr > As > Ni > Hg > Cd。砷和汞以及砷、铬和镍的浓度升高分别构成了非致癌和致癌风险。这些结果表明，野生的 C. quadricarinatus 种群不仅对水生生态系统构成威胁，而且在食用时还可能对人类健康造成风险。
