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首页> 外文期刊>Environmental toxicology and chemistry >INVESTIGATING THE LINK BETWEEN PULP MILL EFFLUENT AND ENDOCRINE DISRUPTION: ATTEMPTS TO EXPLAIN THE PRESENCE OF INTERSEX FISH IN THE WABIGOON RIVER, ONTARIO, CANADA
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INVESTIGATING THE LINK BETWEEN PULP MILL EFFLUENT AND ENDOCRINE DISRUPTION: ATTEMPTS TO EXPLAIN THE PRESENCE OF INTERSEX FISH IN THE WABIGOON RIVER, ONTARIO, CANADA

机译：研究纸浆厂废水和内分泌紊乱之间的联系：试图解释加拿大安大略省威比冈河中的中性鱼类的存在

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摘要

The ability of some pulp mill effluents (PME) to act as reproductive and endocrine disrupters in fish is well documented in the literature. However, changes are not always consistent with regard to species, gender, hormones, or reproductive effects. In the present study, the presence of the first intersexed fish that, to our knowledge, has been found in a Canadian river exposed to PME, is reported. A field survey of the Wabigoon River near Dryden, Ontario, in the fall of 2000 found intersexed walleye (Sander vitreus vitreus) with significantly altered hormone levels and reduced gonad size. The Wabigoon River receives discharge from a bleached kraft pulp and paper mill and a municipal wastewater (MWW) plant. It also has historical sediment contamination (wood fiber mats) contributing to extended periods of low dissolved oxygen under low flow, drought conditions. A mesocosm-based partial life cycle test exposing fathead minnows (Pimephales promelas) to reference water, 20% effluent volume to river volume (v/v), 40% (v/v), or 60% (v/v) PME as well as a field survey of the walleye in the Wabigoon River were conducted. The only change in our mesocosm exposure was a decrease in testosterone in males with increasing effluent concentration and vitellogenin induction in males exposed to 60% (v/v) effluent. These results did not reflect the magnitude of endocrine disruption seen in the wild fish survey. Several hypotheses that may explain these discrepancies are proposed. Specifically, evidence is offered from published studies indicating that either hypoxia or MWW, alone or in combination with PME, may explain the discrepancy between our field experiment and the wild fish survey. The present study illustrates the complexities of multistressor receiving environments and the need for the development of cumulative effects assessment approaches.
机译：一些制浆厂废水（PME）充当鱼类繁殖和内分泌干扰物的能力已在文献中充分记录。但是，变化在物种，性别，激素或生殖作用方面并不总是一致的。在本研究中，据报道，据我们所知，在暴露于PME的加拿大河流中发现了第一只混交鱼类。 2000年秋天，对安大略省德莱顿市附近的Wabigoon河进行了一次野外调查，结果发现雌性互生的角膜白斑（Sander vitreus vitreus）的荷尔蒙水平显着改变，性腺大小减小。瓦比贡河从漂白的牛皮纸制浆造纸厂和市政废水（MWW）厂接收污水。它还具有历史沉积物污染（木纤维垫），导致低流量，干旱条件下长时间的低溶解氧增长。基于中观的部分生命周期测试，将黑头min鱼（Pimephales promelas）暴露于参考水，废水体积相对于河流体积的20％（v / v），40％（v / v）或60％（v / v）的PME并对Wabigoon河中的角膜白斑进行了实地调查。我们的中观暴露的唯一变化是，随着废水浓度的增加，雄性睾丸激素减少，而暴露于60％（v / v）的雄性引起卵黄蛋白原诱导。这些结果没有反映出野鱼调查中发现的内分泌干扰的程度。提出了一些可以解释这些差异的假设。具体而言，已发表的研究提供的证据表明，单独或与PME联合使用，低氧或MWW均可解释我们的田间实验与野鱼调查之间的差异。本研究说明了多应激源接收环境的复杂性以及对累积效应评估方法发展的需求。

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  • 来源
    《Environmental toxicology and chemistry》 |2010年第4期|p.952-965|共14页
  • 作者

    Michael S. Pollock; Monique G. Dube; Richard Schryer;

  • 作者单位

    School of Environment and Sustainability, University of Saskatchewan, 323 Kirk Hall, 117 Science Place, Saskatoon, Saskatoon, S7N 5C8 Canada;

    School of Environment and Sustainability, University of Saskatchewan, 323 Kirk Hall, 117 Science Place, Saskatoon, Saskatoon, S7N 5C8 Canada;

    Schryer Environmental Consulting, Saskatoon, Saskatoon, S7S 1H8 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

    fathead minnow; walleye; pulp mill effluent; hypoxia; endocrine disruption;

    机译：胖子min鱼角膜白斑制浆厂废水;缺氧内分泌干​​扰;

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