Illinois Natural History Survey, University of Illinois at Urbana-Champaign, 1816 S. Oak St., Champaign, IL 61820, United States.
Illinois Natural History Survey, University of Illinois at Urbana-Champaign, 1816 S. Oak St., Champaign, IL 61820, United States.
Chemosphere. 2014 Jun;104:63-8. doi: 10.1016/j.chemosphere.2013.10.058. Epub 2013 Dec 2.
Efforts to control invasive bighead (Hypophthalmichthys nobilis) and silver carp (H. molitrix) may include harvest for human consumption. We measured concentrations of arsenic (As), mercury (Hg), and selenium (Se) in fillets from silver and bighead carp collected from the lower Illinois River, Illinois, USA, to determine whether concentrations were of health concern and differed by species, size, and location. Concentrations of total As were below detection limits in most bighead (92%) and silver (77%) carp fillets, whereas inorganic As was below detection limits in all samples. Mean Hg concentrations were greater in bighead (0.068 mg kg(-1)) than in silver carp (0.035 mg kg(-1)), and were smallest in carp from the confluence of the Illinois and Mississippi rivers. Mercury concentrations in fillets were positively correlated with body mass in both species. Concentrations of Hg were below the US Food and Drug Administration's (USFDA) action level (1 ppm as methyl-Hg); however, concentrations in some bighead (70%) and silver (12%) carp fell within the range that would invoke a recommendation to limit meals in sensitive cohorts. Mean Se concentrations were greater in silver (0.332 mg kg(-1)) than in bighead (0.281 mg kg(-1)) carp fillets, and were below the 1.5 mg kg(-1) limit for an unrestricted number of meals/month. The mean molar ratio of Se:Hg in fillets was lower in bighead (14.0) than in silver (29.1) carp and was negatively correlated with mass in both species Concentrations of Hg in bighead and silver carp fillets should be considered when assessing the risks associated with the use of these species as a protein source.
控制鳙鱼（Hypophthalmichthys nobilis）和草鱼（H. molitrix）的入侵可能包括将其捕捞供人类食用。我们测量了来自美国伊利诺伊州伊利诺伊河下游的草鱼和鳙鱼鱼片的砷（As）、汞（Hg）和硒（Se）浓度，以确定这些浓度是否对健康构成威胁，以及是否因物种、大小和位置而异。大多数鳙鱼（92%）和草鱼（77%）的鱼片总砷浓度低于检测限，而所有样本的无机砷浓度均低于检测限。鳙鱼的汞浓度平均值（0.068 mg kg(-1))高于草鱼（0.035 mg kg(-1))，而在伊利诺伊河和密西西比河交汇处的鱼片中最小。两种鱼的肌肉中汞浓度均与体重呈正相关。在这两个物种中，肌肉中的汞浓度都低于美国食品和药物管理局（USFDA）的行动水平（1 ppm 作为甲基-Hg）；然而，一些鳙鱼（70%）和草鱼（12%）的肌肉中的汞浓度在会限制敏感人群进食的范围内。草鱼的硒浓度平均值（0.332 mg kg(-1))高于鳙鱼（0.281 mg kg(-1))，低于每月无限制食用次数的 1.5 mg kg(-1)限制。肌肉中硒与汞的摩尔比在鳙鱼（14.0）中低于草鱼（29.1），且在两个物种中均与体重呈负相关。在评估这些物种作为蛋白质来源的相关风险时，应考虑鳙鱼和草鱼肌肉中的汞浓度。
