Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang 550025, China.
Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang 550025, China.
Ecotoxicol Environ Saf. 2022 Jun 1;237:113536. doi: 10.1016/j.ecoenv.2022.113536. Epub 2022 Apr 19.
Lake wetland quality has decreased with the elevated concentrations of some trace elements. The consumption of crayfish in the trace elements concentrated lake wetland can be a hazard for the waterbirds and human health. Thus, the bioaccumulations of Cd, Ni, Pb and Zn in sediments and abdominal muscles of Procambarus clarkii in Caohai lake wetland, China were quantified. Sediment-bound Cd, Ni, Pb and Zn were remarkably elevated compared to the parent rock, while 64.71-94.12% of adverse effect index in sediment-bound Cd, Ni, Pb and Zn were > 1. Abdominal muscle-bound Cd, Pb and Zn in several samples were all above the maximum permissible limits. Pb, Zn and Ni in abdominal muscles were significantly linked with those in sediments (R =0.60-0.89, p < 0.01) and lake sediment might be the important feed sources of P. clarkii. Target hazard quotients of Cd, Ni, Pb and Zn at the 95th percentile was all below the benchmark, normal consumption of the abdominal muscle of P. clarkii posed low or no probabilistic health risk to the Grus nigricollis and local inhabitants.
湖泊湿地的水质因某些微量元素浓度的升高而下降。在微量元素浓度高的湖泊湿地中食用小龙虾可能对水鸟和人类健康构成危害。因此，定量分析了中国草海湿地小龙虾 Procambarus clarkii 沉积物和腹部肌肉中 Cd、Ni、Pb 和 Zn 的生物累积情况。与基岩相比，沉积物中结合的 Cd、Ni、Pb 和 Zn 显著升高，而 64.71-94.12%的沉积 Cd、Ni、Pb 和 Zn 的有害影响指数>1。几个样本中腹部肌肉中的 Cd、Pb 和 Zn 均超过最大允许限量。腹部肌肉中的 Pb、Zn 和 Ni 与沉积物（R =0.60-0.89，p<0.01）显著相关，湖泊沉积物可能是 P. clarkii 的重要饲料来源。Cd、Ni、Pb 和 Zn 的目标危害系数在第 95 百分位数均低于基准值，正常食用 P. clarkii 的腹部肌肉对黑颈鹤和当地居民造成的健康风险较低或没有概率。
