Baseline Blood Pb Concentrations in Black-Necked Stilts on the Upper Texas Coast

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• 作者：Thomas V. Riecke ; Warren C. Conway…
• 关键词：Black ; necked stilt ; Blood ; Himantopus mexicanus ; Lead toxicity ; Lead concentration ; Texas coast
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：95
• 期：4
• 页码：465-469
• 全文大小：376 KB
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• 作者单位：Thomas V. Riecke (1) (5)
  Warren C. Conway (1) (2)
  David A. Haukos (3)
  Jena A. Moon (4)
  Christopher E. Comer (1)
  
  1. Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, TX, 75962, USA
  5. Department of Natural Resources and Environmental Science Program in Ecology, Evolution, and Conservation Biology, University of Nevada, Reno, NV, 89557, USA
  2. Department of Natural Resources Management, Texas Tech University, Lubbock, TX, 79409, USA
  3. U. S. Geological Survey, Kansas Cooperative Fish and Wildlife Research Unit, Kansas State University, Manhattan, KS, 66506, USA
  4. Inventory and Monitoring, U. S. Fish and Wildlife Service, Winnie, TX, 77655, USA
  
• 刊物主题：Pollution, general; Environmental Health; Ecotoxicology; Soil Science & Conservation; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution;
• 出版者：Springer US
• ISSN：1432-0800

文摘

There are no known biological requirements for lead (Pb), and elevated Pb levels in birds can cause a variety of sub-lethal effects and mortality. Historic and current levels of Pb in mottled ducks (Anas fulvigula) suggest that environmental sources of Pb remain available on the upper Texas coast. Because of potential risks of Pb exposure among coexisting marsh birds, black-necked stilt (Himantopus mexicanus) blood Pb concentrations were measured during the breeding season. Almost 80 % (n = 120) of 152 sampled stilts exceeded the background threshold (>20 μg/dL) for Pb exposure. However, blood Pb concentrations did not vary by age or gender, and toxic or potentially lethal concentrations were rare (<5 %). Consistent, low-level blood Pb concentrations of black-necked stilts in this study suggest the presence of readily bioavailable sources of Pb, although potential impacts on local stilt populations remain unclear. Keywords Black-necked stilt Blood Himantopus mexicanus Lead toxicity Lead concentration Texas coast