Ayaş Zafer
Biology Department, Faculty of Science, Hacettepe University, Beytepe, Ankara, Turkey.
Ecotoxicology. 2007 May;16(4):347-52. doi: 10.1007/s10646-007-0132-6. Epub 2007 Mar 16.
Concentrations of four trace elements (Cd, Ni, Cu and Pb) were determined in eggshells of grey heron (Ardea cinerea) and black-crowned night herons (Nycticorax nycticorax) from Nallihan Bird Paradise, which is located in the northern part of Sariyar Dam Reservoir, Turkey. Results indicated that, within the same area, these ardeid species differed in the levels of Cd, Cu and Pb in their eggshells (generally grey heron > night heron), possibly because females may have foraged in different habitats and regions. Geometric means found for Cd, Ni, Cu and Pb in eggshells were 0.931 mg/kg, 0.405 mg/kg, 6.755 mg/kg and 4.567 mg/kg, respectively, for grey heron; and 0.230 mg/kg, 0.220 mg/kg, 1.369 mg/kg and 1.108 mg/kg, respectively, for night heron. High bioaccumulation from sediments to eggshells occured for Cu and Pb, while Cd and Ni exhibited low accumulation. Bioaccumulation ratios were calculated as 19.63 (Cu) and 22.9 (Pb) in eggshells of grey herons. In conclusion, eggshells of grey herons appeared to be good bioindicators for monitoring of Cu and Pb in Nallihan Bird Paradise.
对来自土耳其萨里亚尔大坝水库北部纳利汉鸟类天堂的苍鹭（苍鹭属）和夜鹭（夜鹭属）蛋壳中的四种微量元素（镉、镍、铜和铅）浓度进行了测定。结果表明，在同一区域内，这些鹭科鸟类蛋壳中的镉、铜和铅含量存在差异（通常苍鹭>夜鹭），这可能是因为雌性可能在不同的栖息地和区域觅食。苍鹭蛋壳中镉、镍、铜和铅的几何平均值分别为0.931毫克/千克、0.405毫克/千克、6.755毫克/千克和4.567毫克/千克；夜鹭蛋壳中镉、镍、铜和铅的几何平均值分别为0.230毫克/千克、0.220毫克/千克、1.369毫克/千克和1.108毫克/千克。铜和铅从沉积物到蛋壳的生物累积量较高，而镉和镍的累积量较低。苍鹭蛋壳中的生物累积率计算为铜19.63和铅22.9。总之，苍鹭蛋壳似乎是监测纳利汉鸟类天堂中铜和铅的良好生物指示物。
