Duffy Lawrence K, Duffy Ryan S, Finstad Greg, Gerlach Craig
Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Box 756160, Fairbanks, AK 99775-6160, USA.
Sci Total Environ. 2005 Mar 1;339(1-3):273-6. doi: 10.1016/j.scitotenv.2004.12.003. Epub 2005 Jan 7.
Reindeer, as terrestrial herbivores, generally have low levels of Hg, but monitoring Hg levels can help in understanding ecological toxicity related to a changing environment. In this study, Alaskan reindeer were analyzed for total mercury (THg) in their hair. Both free-ranging reindeer from the Seward Peninsula, Alaska and reindeer fed a pollock-based fishmeal diet were surveyed. Free ranging reindeer had mean THg levels of (55.3 ng/g; n=5). The mean MeHg level in the free ranging reindeer was 45.5 (ng/g; n=5) or 79% of the THg level. The mean level for THg in the fishmeal fed reindeer was 19 ng/g (n=10). Younger reindeer (2 years of age or less) showed lower levels (0.8 ng/g, n=2) compared to adult reindeer (30.8 ng/g, n=6).
作为陆生食草动物，驯鹿体内汞含量通常较低，但监测汞含量有助于了解与环境变化相关的生态毒性。在本研究中，对阿拉斯加驯鹿毛发中的总汞（THg）进行了分析。研究对象包括来自阿拉斯加苏厄德半岛的野生驯鹿以及以狭鳕鱼粉为食的驯鹿。野生驯鹿的平均总汞含量为（55.3纳克/克；n = 5）。野生驯鹿的甲基汞平均含量为45.5（纳克/克；n = 5），占总汞含量的79%。喂食鱼粉的驯鹿的总汞平均含量为19纳克/克（n = 10）。与成年驯鹿（30.8纳克/克，n = 6）相比，年幼驯鹿（2岁及以下）的汞含量较低（0.8纳克/克，n = 2）。
