Concentrations of Manganese in Tufted Titmouse Feathers near Metal Processing Plants

Q4 Agricultural and Biological Sciences Western Birds Pub Date : 2023-03-22 DOI:10.3390/birds4010012
Rachael Sarnowski, James S. Kellam
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Abstract

Human industry and land use has led to the anthropogenic release of manganese (Mn) into the air and soil near manufacturing centers. Overexposure to Mn can cause considerable health problems in birds. We studied whether the concentration of Mn in bird feathers correlates with the distance to point sources of Mn air emissions. Feathers were collected from Tufted Titmice (Baeolophus bicolor) at two sites in western Pennsylvania, USA. One site was in proximity (0.3 km) to a steel plant with documented Mn releases, and the other site was in a different town about 4.0 km away from other steel plants with documented Mn releases. Using the microwave plasma–atomic emission spectrometer (MP–AES), we found that tail feathers collected from nearest to a steel plant had a significantly higher concentration of Mn compared to the samples from the site further from the emission source. A body mass index was calculated for each set of birds; however, the indices did not vary significantly. This is the first published study of Mn sequestration in Tufted Titmouse feathers. This study develops our general understanding of the potential use of bird feathers as non-invasive bioindicators of environmental metal exposure.
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金属加工厂附近山雀羽毛中锰的含量
人类工业和土地利用导致锰(Mn)人为释放到制造业中心附近的空气和土壤中。过量接触锰会对鸟类造成相当大的健康问题。我们研究了鸟类羽毛中Mn的浓度是否与空气中Mn排放点源的距离有关。在美国宾夕法尼亚州西部的两个地点采集了丛山雀(Baeolophus bicolor)的羽毛。其中一个地点靠近一家有Mn排放记录的钢铁厂(0.3公里),另一个地点位于另一个城镇,距离其他有Mn排放记录的钢铁厂约4.0公里。利用微波等离子体原子发射光谱仪(MP-AES),研究人员发现,与远离发射源的尾羽相比,从离钢铁厂最近的地方收集的尾羽中锰的浓度明显更高。计算了每组鸟类的体重指数;但各指标间差异不显著。这是首次发表的关于山雀羽毛中锰的固存研究。这项研究发展了我们对鸟类羽毛作为环境金属暴露的非侵入性生物指标的潜在用途的一般理解。
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来源期刊
Western Birds
Western Birds Agricultural and Biological Sciences-Animal Science and Zoology
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