Bird D J, Rotchell J M, Hesp S A, Newton L C, Hall N G, Potter I C
Faculty of Applied Sciences, University of the West of England, Bristol, UK.
Environ Pollut. 2008 Feb;151(3):641-51. doi: 10.1016/j.envpol.2007.03.018. Epub 2007 Jun 4.
We explored how hepatic [metal]s in Anguilla anguilla at a contaminated estuarine site are influenced by body size, age and season, and the extent that [Cu], [Cd] and [Zn]s are reflected in [metallothionein (MT)]s. Although each [metal] and [MT] increased significantly with length, weight and age, those biotic variables explained <10% of the variation in each [metal] and only 11-16% for [MT]. Seasonal changes in [Cu] and [Cd] were paralleled by [MT]. The variation in [MT] explained by Cu (42%) was greater than by Zn (16%) and Cd (13%), and seasonally lay between 43 and 69% for those metals collectively. Thus, hepatic [MT] in eels is closely correlated with hepatic [heavy metal]s. However, the great variability among [MT]s for eels of similar sizes and ages, which reflects marked variability in hepatic [heavy metal]s, means that this variable reflects imprecisely the contamination level at a particular site.
我们探究了在一个受污染河口地区的欧洲鳗鲡肝脏中的[金属]如何受到体型、年龄和季节的影响，以及[铜]、[镉]和[锌]在[金属硫蛋白（MT）]中的反映程度。尽管每种[金属]和[MT]均随体长、体重和年龄显著增加，但这些生物变量仅解释了每种[金属]不到10%的变化，对[MT]的解释率仅为11 - 16%。[铜]和[镉]的季节性变化与[MT]的变化平行。由铜解释的[MT]变化（42%）大于由锌（16%）和镉（13%）解释的变化，且这些金属共同作用时，季节性变化在43%至69%之间。因此，鳗鱼肝脏中的[MT]与肝脏中的[重金属]密切相关。然而，相似大小和年龄的鳗鱼之间[MT]存在很大差异，这反映了肝脏中[重金属]的显著差异，这意味着该变量并不能精确反映特定地点的污染水平。
