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首页> 外文期刊>Environmental toxicology and chemistry >Productivity of American robins exposed to polychlorinated biphenyls, Housatonic River, Massachusetts, USA.
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Productivity of American robins exposed to polychlorinated biphenyls, Housatonic River, Massachusetts, USA.

机译：暴露于多氯联苯的美国知更鸟的生产力，美国马萨诸塞州侯萨托尼克河。

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摘要

American robins (Turdus migratorius) breeding in the Housatonic River (MA, USA) watershed were studied in the field in 2001 to determine whether productivity was adversely affected by exposure to polychlorinated biphenyls (PCBs), as would be suggested by extrapolation from laboratory studies on other avian species. The study involved identifying nests within the Housatonic River floodplain (target area) and in reference areas beyond foraging distance of the floodplain, monitoring clutch size and number hatched and fledged, collecting eggs and nestlings for analysis for PCBs, and testing for differences in productivity between populations. One hundred and six active robin nests were monitored. Although concentrations of PCBs in target specimens were more than two orders of magnitude greater than in reference specimens, the only statistically significant differences in productivity were inconsistent with an exposure-related effect. First-generation productivity of exposed robins was within the range of natural background variation. Bioequivalence tests confirmed that first-generation productivity was statistically and biologically equivalent in target and reference robins. These findings contrast with extrapolations from laboratory studies of other avian species.
机译：实验室研究推断，2001年在美洲休斯敦河（美国马萨诸塞州）流域繁殖的美国知更鸟（Turdus migratorius）进行了田间调查，以确定生产率是否受到多氯联苯（PCB）的暴露的不利影响。其他鸟类。这项研究涉及识别胡萨托尼克河洪泛区（目标区域）内和洪泛平原觅食距离之外的参考区域内的巢穴，监测离合器的大小和孵化和出雏的数量，收集卵和雏巢以进行多氯联苯分析，并测试它们之间的生产力差异。人口。监视了一百零六个活动的知更鸟巢。尽管目标样品中PCBs的浓度比参考样品中的PCBs高两个数量级以上，但生产率的唯一统计学上显着差异与暴露相关的影响不一致。暴露的知更鸟的第一代生产力在自然背景变化的范围内。生物等效性测试证实，目标知更鸟和参考知更鸟的第一代生产力在统计学和生物学上均相等。这些发现与其他禽类实验室研究的推断相反。

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