Kral Tomas, Blahova Jana, Doubkova Veronika, Farkova Dagmar, Vecerek Vladimir, Svobodova Zdenka
Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.
Bull Environ Contam Toxicol. 2017 Feb;98(2):167-171. doi: 10.1007/s00128-016-2002-5. Epub 2016 Dec 21.
The aim of this work is to assess mercury content in the great cormorant in the Třeboň region pond systems (Czech Republic) in terms of its potential to accumulate mercury from common carp. Selected tissues samples were taken from 51 cormorants and 30 common carp. In the food chain the cormorant was found to have the potential to accumulate mercury, where the muscle total mercury was roughly 35 times higher compared to the total mercury content in the carp muscle as its food. A statistically significantly higher overall mercury content (p < 0.01) has been found in the kidney and liver (2.23 ± 0.30, 2.12 ± 0.22 mg/kg) compared to other tissues examined in cormorants. The proportion of muscle methylmercury in the total mercury content of the cormorant was within the range 64.3%-87.3%. The results can help us to gain a better understanding of how mercury is distributed and accumulated in the aquatic food chain.
这项工作的目的是评估捷克共和国特雷博尼采地区池塘系统中鸬鹚体内的汞含量，以了解其从鲤鱼体内积累汞的可能性。从51只鸬鹚和30条鲤鱼身上采集了选定的组织样本。在食物链中，鸬鹚被发现有积累汞的可能性，其肌肉中的总汞含量大约是其食物鲤鱼肌肉中总汞含量的35倍。与鸬鹚身上检测的其他组织相比，在肾脏和肝脏中发现了统计学上显著更高的总汞含量（p < 0.01）（2.23±0.30，2.12±0.22毫克/千克）。鸬鹚肌肉中甲基汞在总汞含量中的比例在64.3% - 87.3%范围内。这些结果有助于我们更好地了解汞在水生食物链中的分布和积累情况。
