Reynolds K D, Rainwater T R, Scollon E J, Sathe S S, Adair B M, Dixon K R, Cobb G P, McMurry S T
The Institute of Environmental and Human Health and Department of Environmental Toxicology, Texas Tech University Health Sciences Center, Lubbock 79409-1163, USA.
Environ Toxicol Chem. 2001 Dec;20(12):2903-9.
Foraging areas of adult prothonotary warblers (Protonotaria citrea) were determined using standard radiotelemetry techniques to determine if soil concentrations of p,p'dichlorodiphenyltrichloroethane (p,p'DDT) and mercury in foraging areas could be used to predict contaminant levels in diets and tissues of nestling warblers. Adult warblers were fitted with transmitters and monitored for approximately 2 d while foraging and feeding 6- to 8-d-old nestlings. Foraging ecology data were integrated with contaminant levels of soil, diets, and tissues into a comprehensive analysis of geographic variation in contaminant exposure and uptake using linear regression. Concentrations of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE) and mercury in nestling tissues varied considerably across the study site. Mean concentration of DDE was greater in eggs than all other tissues, with individual samples ranging from 0.24 to 8.12 microgram/kg. In general, concentrations of DDT in soil were effective in describing the variation of contaminants in adipose samples. Concentrations of mercury in soils accounted for 78% of the variation in kidney samples. This was the best relationship of any of the paired variables. All other relationships showed relatively poor predictive ability.
利用标准无线电遥测技术确定成年橙顶灶莺（Protonotaria citrea）的觅食区域，以判断觅食区域土壤中p,p'-二氯二苯三氯乙烷（p,p'DDT）和汞的浓度是否可用于预测雏莺饮食和组织中的污染物水平。给成年莺佩戴发射器，并在其觅食和喂养6至8日龄雏莺时进行约2天的监测。利用线性回归将觅食生态数据与土壤、饮食和组织的污染物水平整合，对污染物暴露和摄取的地理变异进行综合分析。研究地点雏莺组织中1,1-二氯-2,2-双（对氯苯基）乙烯（DDE）和汞的浓度差异很大。DDE在卵中的平均浓度高于所有其他组织，单个样本范围为0.24至8.12微克/千克。总体而言，土壤中DDT的浓度有效地描述了脂肪样本中污染物的变化。土壤中汞的浓度占肾脏样本变化的78%。这是所有配对变量中最佳的关系。所有其他关系的预测能力相对较差。
