Chair of Commodity and Food Analysis, University of Warmia and Mazury in Olsztyn, ul. Plac Cieszyński 1, 10-726 Olsztyn, Poland.
The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, ul. Oczapowskiego 10, 10-719 Olsztyn, Poland.
Ecotoxicol Environ Saf. 2018 May 30;153:60-67. doi: 10.1016/j.ecoenv.2018.01.057. Epub 2018 Feb 3.
Heavy metals content (Zn, Cu and Hg) were measured in gills, liver, gonads and muscles of perch, Perca fluviatilis (L.) and roach, Rutilus rutilus (L.) from Lake Pluszne (north-eastern Poland). Correlations between heavy metals levels and total length, weight, HSI, GSI and FCF were examined. As expected, muscles contained the significantly highest values of Hg (P ≤ .05). The concentrations of Zn were significantly higher in gills of roach and gonads of perch (P ≤ .05), while the liver of fish accumulated significantly more Cu than other organs (P ≤ .05). In all organs of perch the higher content of mercury was found (P ≤ .05). The value of Zn and Cu was highest in organs of roach (P ≤ .05) (with the exception of Zn in muscles P > .05). Sequence of metals in both species was Zn > Cu > Hg. Only in muscle tissue, Hg was significantly positive correlated with weight of roach (r = 0.811, P = .045) and perch (r = 0.652, P = .041), and total length of roach (r = 0.806, P = .005). A positive relationship was also observed between Zn concentration in gills of perch and their weight (r = 0.634, P = .049). In contrary, Zn in gills of roach decreased with weight (r = -0.693, P = .026)) and length (r = -0.668, P = .035). Cu concentration in liver of perch was statistically positively correlated with HSI (r = 0.717, P = .020), whereas Hg content in muscle tissue of roach with FCF (r = 0.643, P = .045). There was negative relationship between Hg in perch gonads and GSI (r = -0.808, P = .005). Metal pollution index (MPI) in gills, liver, gonads and muscles of roach was 7.68, 7.24, 6.77 and 3.13, respectively, whereas in these organs of perch was 3.25 (gills), 4.75 (liver), 5.84 (gonads) and 4.44 (muscles), therefore the contamination of each tissue ranged from very low contamination to low contamination. The concentration of mercury was lower than the maximum acceptable limit estimated by the Commission Regulation (EC) No 629/2008 of 2 July 2008. The values of HI and THQ were below 1, which means that consumption of these fish is not hazardous to the consumer.
重金属含量（Zn、Cu 和 Hg）在湖中的鲈鱼（Perca fluviatilis（L.））和斜齿鳊（Rutilus rutilus（L.））的鳃、肝、性腺和肌肉中进行了测量。检验了重金属水平与总长度、体重、HSI、GSI 和 FCF 之间的相关性。正如预期的那样，肌肉中 Hg 的含量明显最高（P≤.05）。鲈鱼的鳃中 Zn 浓度明显高于斜齿鳊（P≤.05），而鱼的肝脏中 Cu 积累明显高于其他器官（P≤.05）。在鲈鱼的所有器官中，汞的含量都较高（P≤.05）。Zn 和 Cu 的含量在斜齿鳊的器官中最高（P≤.05）（除肌肉中的 Zn 外 P>.05）。两种物种中金属的顺序为 Zn>Cu>Hg。只有在肌肉组织中，Hg 与斜齿鳊的体重（r = 0.811，P =.045）和鲈鱼（r = 0.652，P =.041），以及斜齿鳊的总长度（r = 0.806，P =.005）呈显著正相关。在鲈鱼的鳃中也观察到 Zn 浓度与体重之间存在正相关关系（r = 0.634，P =.049）。相反，斜齿鳊的鳃中 Zn 随着体重（r = -0.693，P =.026）和长度（r = -0.668，P =.035）而减少。鲈鱼肝脏中的 Cu 浓度与 HSI 呈统计学正相关（r = 0.717，P =.020），而斜齿鳊肌肉中的 Hg 含量与 FCF 呈正相关（r = 0.643，P =.045）。鲈鱼性腺中的 Hg 与 GSI 呈负相关（r = -0.808，P =.005）。斜齿鳊的鳃、肝、性腺和肌肉中的金属污染指数（MPI）分别为 7.68、7.24、6.77 和 3.13，而鲈鱼的这些器官中的 MPI 分别为 3.25（鳃）、4.75（肝）、5.84（性腺）和 4.44（肌肉），因此，每种组织的污染范围从极低污染到低污染。汞的浓度低于欧盟委员会（EC）第 629/2008 号法规（2008 年 7 月 2 日）规定的最大可接受限值。HI 和 THQ 值均低于 1，这意味着这些鱼类的消费对消费者没有危害。
