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首页> 外文期刊>Environmental toxicology and chemistry >EFFECTS OF SUBCHRONIC EXPOSURE OF EARLY LIFE STAGES OF WHITE STURGEON (ACIPENSER TRANSMONTANUS) TO COPPER, CADMIUM, AND ZINC
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EFFECTS OF SUBCHRONIC EXPOSURE OF EARLY LIFE STAGES OF WHITE STURGEON (ACIPENSER TRANSMONTANUS) TO COPPER, CADMIUM, AND ZINC

机译：白ST雌鱼早期生命阶段的亚慢性暴露对铜，镉和锌的影响

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摘要

Populations of sturgeon (Acipenseridae) are declining in many places in the world because of several potential factors, including overharvesting, habitat alteration, and pollution. In North America, populations of the white sturgeon (Acipenser trans-montanus) have been experiencing poor annual recruitment in major river systems for more than three decades. Metal pollution has been hypothesized as a potential contributing factor to the poor recruitment in some of the water bodies. In general, little is known about the toxicity of metals such as Cu, Cd, and Zn to white sturgeon and their potential influence on survival of embryos and juveniles. The present study was conducted to establish baseline toxicity data for the subchronic exposure of early life stages of white sturgeon to Cu, Cd, and Zn that can be used in metal-related risk assessments. Embryos, larvae, and fry were exposed to increasing concentrations of dissolved Cu, Cd, or Zn for 66 d using laboratory-based flow-through exposure systems. Hatching success was greater than 79% for all controls, and no significant differences were observed among treatment groups or between treatments and controls. Chronic lethal concentrations at which 20% mortality occurred (LC20s) for Cd (1.5 (μg/L), Cu (5.5 μg/L), and Zn (112μg/L) obtained for white sturgeon in the present study were comparable to those of sensitive salmonid species. Based on LC20 values for 19 or 58 d posthatch white sturgeon, the United States national ambient water quality criteria and the Canadian water quality guidelines for the protection of aquatic life that have been established for Cd, Cu, and Zn protect white sturgeon early life stages.
机译：由于许多潜在因素，包括过度捕捞，栖息地改变和污染，of鱼（A鱼）的数量在世界许多地方正在减少。在北美，超过三十年的时间，主要river河系统的白（鱼（Acipenser trans-montanus）的年招募量一直很差。金属污染被认为是某些水体补水不佳的潜在因素。通常，对于诸如铜，镉和锌的金属对白urge鱼的毒性及其对胚胎和幼虫存活的潜在影响知之甚少。进行本研究是为了建立白data鱼生命早期亚慢性暴露于Cu，Cd和Zn的基线毒性数据，这些数据可用于与金属有关的风险评估。使用基于实验室的流通式暴露系统，使胚胎，幼虫和鱼苗暴露于浓度递增的溶解的Cu，Cd或Zn中达66天。所有对照组的孵化成功率均大于79％，各治疗组之间或各治疗组与对照组之间均未观察到显着差异。本研究中白st的Cd（1.5（μg/ L），Cu（5.5μg/ L）和Zn（112μg/ L）的死亡率达到20％时的慢性致死浓度（LC20s）与根据孵化后白色或。鱼19或58 d的LC20值，美国国家环境水质标准和加拿大为保护水生生物而制定的Cd，Cu和Zn保护白水准绳准则。 life鱼生命的早期阶段。

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  • 来源
    《Environmental toxicology and chemistry》 |2011年第11期|p.2497-2505|共9页
  • 作者

    David W. Vardy; Amber R. Tompsett; Jacinda L. Sigurdson; Jon A. Doering; Xiaowei Zhang; John P. Gmsy; Markus Hecker;

  • 作者单位

    University of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada,Michigan State University, East Lansing, Michigan, USA,City University of Hong Kong, Kowloon, Hong Kong, China,King Saud University, Riyadh, Saudi Arabia;

    rnUniversity of Saskatchewan, Saskatoon, Saskatchewan, Canada,Cardno ENTRIX, Saskatoon, Saskatchewan, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sturgeon; early life stages; metal toxicity; water quality criteria;

    机译：鲟;生命的早期阶段;金属毒性;水质标准;

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