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首页> 外文期刊>Environmental toxicology and chemistry >The Relation Between Polychlorinated Biphenyls and Population Metrics of 4 Species of Fish from the Upper Hudson River, New York, USA
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The Relation Between Polychlorinated Biphenyls and Population Metrics of 4 Species of Fish from the Upper Hudson River, New York, USA

机译：美国纽约州哈德逊河上游的4种鱼类的多氯联苯与种群指标的关系

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In the upper Hudson River, New York, USA, fish were exposed to polychlorinated biphenyls (PCBs) from the 1940s to 1977, and PCBs still persist in this environment. Yellow perch (Perca flavescens), brown bullhead (Ameiurus nebulosus), smallmouth bass (Micropterus dolomieu), and largemouth bass (M. salmoides) were collected annually from 2003 to 2009 from 1 control site upstream of the PCB discharge locations and from 2 sites downstream from where PCBs were released. Fish PCB concentrations were estimated, and 3 population metrics were examined: 1) relative abundance, 2) weight-to-length ratio, and 3) growth. Normalized lipid-based PCB concentrations at the 2 PCB exposure pools averaged approximately 100 to 600 mu g/g. Estimated relative abundances with electrofishing were higher for largemouth bass, smallmouth bass, and brown bullhead at PCB exposure sites compared to the control site; but yellow perch were more abundant at the control site. Weight to length ratios varied among sites and species, but no consistent pattern was evident in relation to PCBs at the population level or for individual fish. Growth rates for yellow perch and brown bullhead were similar among sites. Largemouth bass growth was slightly higher at the control site compared to the 2 PCB sites, but smallmouth bass growth was much higher at the PCB sites compared to the control site. We could not detect any relation or influence of PCBs on the 3 population metrics that we examined. the present results corroborated those of previous investigations concerning the effects of PCBs on fishes. We recommend stronger consideration of the biological impacts of PCBs at the population level when conducting risk assessments. Environ Toxicol Chem 2019;38:329-339. (c) 2018 SETAC
机译：从1940年代到1977年，在美国纽约的哈德逊河上游，鱼类暴露于多氯联苯（PCBs）中，而PCBs仍在这种环境中持续存在。从2003年至2009年，每年从PCB放电位置的上游1个控制点和2个位置采集黄鲈（Perca flavescens），棕头（Ameiurus nebulosus），小嘴鲈（Micropterus dolomieu）和大嘴鲈（M. salmoides）。释放PCB的下游。估算了鱼类多氯联苯的浓度，并检查了3个种群指标：1）相对丰度，2）体重比和3）生长。在两个PCB接触池中，基于脂质的标准化PCB浓度平均约为100至600μg / g。与对照组相比，PCB暴露地点的大口黑鲈，小口黑鲈和棕头黑with的电钓估计相对丰度更高。但在控制部位黄鲈更为丰富。重量与长度的比例因地点和物种而异，但在种群水平或单个鱼类中，与多氯联苯没有明显的一致规律。不同地点的黄鲈和棕头牛的增长率相似。与两个PCB站点相比，控制站点的大嘴鲈鱼生长略高，但与控制站点相比，PCB站点的小嘴鲈鱼增长远高。我们无法检测到PCB对我们检查的3个总体指标的任何关系或影响。目前的结果证实了先前有关多氯联苯对鱼类影响的调查结果。我们建议在进行风险评估时，应更全面地考虑多氯联苯对人群的生物影响。 Environ Toxicol Chem 2019; 38：329-339。 （c）2018年SETAC

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