The impacts of once through cooling on fall and spring spawning fish

一次降温对秋季和春季产卵鱼类的影响

• 批准号: 528391-2018
• 负责人: Wilson, JoannaJY
• 金额: $ 5.1万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=745537
• 关键词: impacts; once; through; cooling; fall

McMaster University, the University of Regina, and Bruce Power have partnered together to study the biological effects of once through cooling water on spring (yellow perch) and fall (round and lake whitefish) spawning fish. Lake whitefish (Coregonus clupeaformis) and yellow perch (Perca flavescens) are commercially and culturally important resources to Indigenous groups including First Nations and Metis; round whitefish (Prosopium cylindraceum) are thermally sensitive and populations have faced significant declines in the Great Lakes. Our research will focus on the impacts of temperature on embryogenesis (perch) and the post-hatching period (perch, whitefish) and in understanding the population genetics and habitat use by these species in Lake Huron. This research will provide Bruce Power Inc with necessary information to assess whether whitefish and perch are sensitive to thermal emissions from the Bruce Nuclear Power Development (BNPD). BNPD has CANDU nuclear power reactors that use once-through cooling; large volumes of lake water cool the turbine hall and warm water is discharged. Prior research showed that temperature was the major stress from once-through cooling for whitefish development and rearing with elevated temperature caused distinct hatching phenotypes. We will focus on whether embryonic temperature stress impacts the fish post-hatch. In addition, we seek to understand the habitat use and population genomics of whitefish and perch that spawn in the nearshore area around BNPD. Prior research suggests that spawning aggregates of whitefish may represent a highly mixed group of fish from the main basin. Fundamental and applied research will be performed in three theme areas: (1) the effects of elevated and variable incubation temperature on whitefish hatchlings and juveniles; (2) the effects of elevated and variable incubation temperature on yellow perch embryogenesis, hatchlings, and juveniles; and (3) genomic and stable isotope studies to understand underlying populations structure and habitat use of whitefish and perch species near the BNPD.

麦克马斯特大学、里贾纳大学和布鲁斯·鲍尔合作研究了一次通过冷却水对春季（黄鲈）和秋季（圆鱼和湖白鱼）产卵鱼的生物影响。湖白鱼（Coregonus clupeaformis）和黄鲈（Perca flavescens）是包括第一民族和梅蒂斯在内的土著群体的重要商业和文化资源；圆白鱼（圆柱白鱼）对温度敏感，在五大湖的种群数量显著下降。我们的研究将集中在温度对休伦湖鲈鱼胚胎发生和孵化后时期（鲈鱼、白鱼）的影响，以及了解这些物种的种群遗传学和栖息地利用。这项研究将为布鲁斯电力公司提供必要的信息，以评估白鱼和鲈鱼是否对布鲁斯核电开发（BNPD）的热排放敏感。BNPD有CANDU核反应堆，使用一次性冷却；大量的湖水冷却了水轮机大厅，热水被排出。先前的研究表明，温度是白鱼发育的主要压力，温度升高的饲养导致不同的孵化表型。我们将重点研究胚胎温度胁迫对鱼孵化后的影响。此外，我们还试图了解在BNPD附近近岸地区产卵的白鱼和鲈鱼的栖息地利用和种群基因组学。先前的研究表明，产卵的白鱼群可能代表了来自主要盆地的高度混合的鱼类群体。基础和应用研究将在三个主题领域进行：(1)升高和变化的孵育温度对白鱼幼鱼和幼鱼的影响；(2)升高和变化孵育温度对黄鲈胚胎发生、幼体和幼鱼的影响；(3)通过基因组学和稳定同位素研究来了解BNPD附近白鱼和鲈鱼的潜在种群结构和栖息地利用。