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首页> 外文期刊>Environmental toxicology and chemistry >ASSESSMENT OF EXPOSURE RISK OF POLYCHLORINATED BIPHENYLS TO INTERIOR LEAST TERNS (STERNA ANTILLARUM)
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ASSESSMENT OF EXPOSURE RISK OF POLYCHLORINATED BIPHENYLS TO INTERIOR LEAST TERNS (STERNA ANTILLARUM)

机译：评估多氯联苯对室内最小的接触风险（STERNA ANTILLARUM）

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摘要

Risk of polychlorinated biphenyl (PCB) exposure and effects were assessed for a colony of federally endangered interior least terns (Sterna antillarum) nesting on the Bitter Lake National Wildlife Refuge (NM, USA). The colony feeds from an area on the Refuge (Hunter Marsh/Oxbow Complex) wherein fish with elevated concentrations of total PCBs have been documented. Concentrations of total PCBs in whole fish averaged 0.94 mg/kg with a maximum concentration of 2.77 mg/kg, wet weight. Estimated daily PCB intake rates by adult birds throughout their 180-d breeding season ranged from < 0.01 mg/kg/d to 0.98 mg/ kg/d, yielding hazard quotients that ranged from 0.01 to 21.68. Polychlorinated biphenyls pose a moderate risk to the colony of interior least terns that breed at the Bitter Lake National Wildlife Refuge, but the exposure rate is not likely to threaten their overall breeding success.
机译：对在邦特湖国家野生动物保护区（美国新墨西哥州）筑巢的联邦濒危内部最小燕鸥（Sterna antillarum）进行了评估，评估了多氯联苯（PCB）暴露的风险及其影响。殖民地的饲料来自避难所（亨特沼泽/牛群）地区，那里的鱼类的多氯联苯总含量升高。整条鱼中多氯联苯的平均浓度平均为0.94 mg / kg，最大重量为2.77 mg / kg，湿重。成年鸟在整个180天的繁殖季节中每天估计的PCB摄入量在<0.01 mg / kg / d到0.98 mg / kg / d的范围内，产生的危害商数在0.01到21.68之间。多氯联苯对在苦湖国家野生动物保护区繁殖的内部最少燕鸥的种群构成中等风险，但接触率不可能威胁到其总体繁殖成功。

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