Anbazhagan Vinothkannan, Partheeban Emmanuel Charles, Arumugam Ganeshkumar, Selvasekaran Venugopal, Rajendran Rajaram, Paray Bilal Ahmad, Al-Sadoon Mohammed Khalid, Al-Mfarij Abdul Rahman
DNA Barcoding and Marine Genomics Laboratory, Department of Marine Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India.
Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
Environ Sci Pollut Res Int. 2021 Jul;28(28):38263-38273. doi: 10.1007/s11356-021-13371-1. Epub 2021 Mar 17.
In this study, we have assessed the concentrations of four heavy metals (Cu, Zn, Cd, and Pb) in the feathers of 11 species of birds from the Point Calimere Wildlife and Bird Sanctuary, a protected environment. Concentrations of copper and zinc were detected in all the bird species, cadmium was observed only in two bird species, and lead was below the detection limits for all birds. The order of concentration of metals in the feathers is Zn > Cu > Cd > Pb. Using the multivariate statistical analysis, principal component analysis (PCA), the metal origins were traced to natural, dietary, and manmade sources. In addition, sediment samples were also collected from the sanctuary, to assess the bioaccumulation factor (BAF). The BAF values follow the order Cd < Cu < Zn < Pb. In comparison with worldwide heavy metal reports in bird feathers, lower concentrations of metals are observed in our study area. The tropical marine ecosystem at Point Calimere Wildlife and Bird Sanctuary can be considered as pristine regarding heavy metal pollution. Continuous monitoring of the ecosystem is crucial to sustain the pristine nature of the sanctuary and to attract many more birds.
在本研究中，我们评估了来自卡里梅雷角野生动物和鸟类保护区（一个受保护环境）的11种鸟类羽毛中四种重金属（铜、锌、镉和铅）的浓度。在所有鸟类物种中均检测到了铜和锌的浓度，仅在两种鸟类物种中观察到了镉，而所有鸟类的铅含量均低于检测限。羽毛中金属浓度的顺序为锌>铜>镉>铅。使用多元统计分析主成分分析（PCA），追踪到金属来源为自然、饮食和人为来源。此外，还从保护区采集了沉积物样本，以评估生物累积因子（BAF）。BAF值的顺序为镉<铜<锌<铅。与全球鸟类羽毛重金属报告相比，我们研究区域内观察到的金属浓度较低。卡里梅雷角野生动物和鸟类保护区的热带海洋生态系统在重金属污染方面可被视为原始状态。持续监测该生态系统对于维持保护区的原始性质以及吸引更多鸟类至关重要。
