CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal.
Department of Environment, Faculty of Environment, Ionian University, Panagoula, GR-29100 Zakynthos, Greece.
Sci Total Environ. 2019 Nov 15;691:187-194. doi: 10.1016/j.scitotenv.2019.07.082. Epub 2019 Jul 8.
In this study, the concentrations of cadmium (Cd), lead (Pb), chromium (Cr), copper (Cu), cobalt (Co), nickel (Ni), manganese (Mn) and zinc (Zn) were investigated in the blood of Scopoli's shearwaters (Calonectris diomedea). Blood samples (N=238) were collected from both juvenile and adult individuals during seven breeding seasons between 2007 and 2014, excluding 2013. Sampling was performed in the pristine environment of the Strofades island complex, Greece, where the largest colony of Scopoli's shearwaters is located in the Eastern Mediterranean basin. The median concentrations of the toxic metals, Cd and Pb, were 0.010 and 0.24μg/g (dry weight; dw), respectively, which were in good agreement with previous studies. The median concentrations of Co, Cr, Cu, Mn, Ni, Zn were 0.18, 1.11, 3.41, 0.29, 0.61, and 22.9μg/g dw, respectively. Inter-annual differences were observed among the concentrations of all assessed metals, except for Ni and Cd, which demonstrated similarities among female individuals. Age-group related differences were observed in both genders for Cd, Cu and Cr, but only among males for Zn. To the best of our knowledge, this is the longest multi-year biomonitoring study of select trace metals that has been conducted thus far on blood samples from Scopoli's shearwater species.
在这项研究中，我们调查了 2007 年至 2014 年期间七个繁殖季节中来自斯科罗普夫氏鹱（Calonectris diomedea）的幼鸟和成年个体的血液样本中的镉（Cd）、铅（Pb）、铬（Cr）、铜（Cu）、钴（Co）、镍（Ni）、锰（Mn）和锌（Zn）浓度。采样是在希腊斯特罗菲德斯岛群的原始环境中进行的，这里是东地中海盆地中最大的斯科罗普夫氏鹱栖息地。有毒金属 Cd 和 Pb 的中位数浓度分别为 0.010 和 0.24μg/g（干重；dw），与之前的研究结果一致。Co、Cr、Cu、Mn、Ni、Zn 的中位数浓度分别为 0.18、1.11、3.41、0.29、0.61 和 22.9μg/g dw。除了 Ni 和 Cd 之外，所有评估金属的浓度均存在年度间差异，而 Ni 和 Cd 则在雌性个体中表现出相似性。在两性中，均观察到 Cd、Cu 和 Cr 的年龄组相关差异，但仅在雄性中观察到 Zn 的差异。据我们所知，这是迄今为止对斯科罗普夫氏鹱物种血液样本进行的最长的多年度选择痕量金属生物监测研究。
