Examination of the effects of mixtures, metals, and toxicity modifying factors on fathead minnow at Vale Inco, Junction Creek, Sudbury, ON

在 Vale Inco, Junction Creek, Sudbury, ON 检查混合物、金属和毒性调节因子对黑头呆鱼的影响

• 批准号: 364196-2007
• 负责人: Dubé, Monique
• 金额: $ 4.59万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=406015
• 关键词: Examination; effects; mixtures; metals; toxicity

The mining industry is of great importance to Canada, employing close to 400,000 Canadians and contributing $40.8 billion to the economy (2003 statistics). The benefits of mining however, come with environmental consequences. Mines discharge significant amounts of treated effluents to surrounding waters (e.g., rivers, lakes). Many efforts have been made to determine whether the release of these effluents causes changes in the quality of the water or the health of the animals that live in the water (e.g., fish and bottom-dwelling insects). However, understanding how waters may be affected by mine effluents is a complicated task. Further, determining if mine effluents are causing change is only the first step towards mitigation and sustainable development. Understanding the causes of the effects (e.g., causative metals) and factors which modify their toxicity is also required to explore solutions. This research seeks to better understand mine effluent effects on waters and to generate information for developing strategies for removing their toxicity. Our objectives are to 1) confirm responses of a fish species (fathead minnow) to metal mine effluents in Sudbury, Ontario using artificial streams with constructed food chains; 2) compare minnow responses to whole effluent mixtures relative to doses of single metals (copper, selenium, thallium); 3) understand the importance of water versus diet as the route of exposure causing toxicity; and 4) explore factors which modify toxicity (pH/alkalinity, organic matter, diet quality and quantity) of effluent mixtures and dominant single metals to fathead minnow. This three year research program will train graduate and undergraduate students in an area of national importance, and involve an integrated combination of laboratory and field studies.

采矿业对加拿大非常重要，雇用了近 40 万加拿大人，为经济贡献了 408 亿加元（2003 年统计数据）。然而，采矿带来的好处也伴随着对环境的影响。矿山将大量处理后的废水排放到周围水域（例如河流、湖泊）。人们已做出许多努力来确定这些废水的排放是否会导致水质或水中动物（例如鱼类和底栖昆虫）健康的变化。然而，了解矿山废水对水域的影响是一项复杂的任务。此外，确定矿山废水是否正在造成变化只是缓解和可持续发展的第一步。探索解决方案还需要了解影响的原因（例如致病金属）和改变其毒性的因素。这项研究旨在更好地了解矿山废水对水体的影响，并为制定消除其毒性的策略提供信息。我们的目标是 1) 使用具有构建食物链的人工溪流，确认安大略省萨德伯里的一种鱼类（黑头鲦鱼）对金属矿废水的反应； 2) 比较米诺鱼对整个废水混合物相对于单一金属（铜、硒、铊）剂量的反应； 3) 了解水与饮食作为导致毒性的接触途径的重要性； 4) 探索改变废水混合物和主要单一金属对黑头鲦鱼的毒性（pH/碱度、有机物、饲料质量和数量）的因素。这个为期三年的研究计划将在国家重要领域培养研究生和本科生，并涉及实验室和实地研究的综合结合。