Effects of aquatic acidification on development in early life stages of commercial fish

水体酸化对商品鱼生命早期发育的影响

• 批准号: RGPIN-2022-03092
• 负责人: Frommel, Andrea
• 金额: $ 1.89万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=758002
• 关键词: Effects; aquatic; acidification; development; early

My long-term research goal is to understand the impacts of climate change on commercially important fish populations by focusing on physiological effects and development in the early life stages. Canadians depend on the oceans for food, recreation and income, and ocean acidification and warming have emerged as driving forces threatening marine resources. With increasing demand for fish in combination with a changing climate, the future of fish production is dependent upon improving fisheries management and sustainable aquaculture by accounting for species and life-stage-specific effects of environmental change. One of the major bottlenecks in fisheries and aquaculture production is the poor survival and growth of the early life stages. Fish in these stages are particularly vulnerable to suboptimal environmental conditions, due to their high energy requirements for growth and organogenesis, undeveloped regulatory capacities and restricted mobility. My ongoing research has shown strong effects of ocean acidification on early development, growth and survival of fish. However, I have also shown large differences in the sensitivity of fish to CO2, depending on the species, population and developmental stage. Yet it is unclear what underlies these differences, how they are affected by other climate change factors, such as temperature, oxygen and food availability, and how local variability in CO2 affects vulnerability. To address this, my research program will focus on rearing early life stages of fishes important for fisheries and aquaculture, in different environmental conditions outlined below. Sensitivity of fishes to climate change will be determined by a combination of methods from genes to whole animal physiology. This will allow us to better predict the effects of climate change on fish populations and ecosystem changes to aid in fisheries and aquaculture management, as well as to inform best practices for aquaculture production. The three key questions I will address in the first 5 years of my research program are: 1. How does CO2 in combination with other stressors affect early fish development? 2: How does variability in CO2 alter the physiological response of fish? 3: Does air exposure during the embryonic phase in intertidal fish alleviate impacts of high aquatic CO2? These research areas will provide a foundation for training students in research, analytics, communication, teamwork and leadership, while creating a training environment that attracts students from all backgrounds. My research focuses on the effects of climate change on key commercially, culturally and ecologically important fish species in Canada, to strive for a sustainable new Blue Economy. Only by improving our knowledge of how climate change variables impact the health and development of commercially important fish species, can we advance fisheries and aquaculture management, food security and welfare standards for a more sustainable use of ocean resources.

我的长期研究目标是通过关注早期生命阶段的生理影响和发育，了解气候变化对商业上重要的鱼类种群的影响。加拿大人依靠海洋获取食物、娱乐和收入，海洋酸化和变暖已成为威胁海洋资源的驱动力。随着对鱼类需求的增加以及气候的变化，鱼类生产的未来取决于通过考虑环境变化对物种和生命阶段的具体影响来改善渔业管理和可持续水产养殖。渔业和水产养殖生产的主要瓶颈之一是早期生命阶段的生存和生长不良。处于这些阶段的鱼类特别容易受到次优环境条件的影响，因为它们的生长和器官形成需要很高的能量，监管能力不发达，流动性有限。我正在进行的研究表明，海洋酸化对鱼类的早期发育、生长和生存产生了强烈影响。然而，我也表明鱼类对二氧化碳的敏感性存在很大差异，这取决于物种，种群和发育阶段。然而，目前尚不清楚这些差异的原因是什么，它们如何受到温度、氧气和粮食供应等其他气候变化因素的影响，以及二氧化碳的局部变化如何影响脆弱性。为了解决这个问题，我的研究计划将集中在饲养早期生命阶段的鱼类重要的渔业和水产养殖，在不同的环境条件下概述如下。鱼类对气候变化的敏感性将通过从基因到整个动物生理学的方法来确定。这将使我们能够更好地预测气候变化对鱼类种群和生态系统变化的影响，以帮助渔业和水产养殖管理，并为水产养殖生产提供最佳实践。 在我的研究计划的前5年，我将解决的三个关键问题是：1。CO2与其他压力源的结合如何影响早期鱼类发育？2：二氧化碳的变化如何改变鱼类的生理反应？3：潮间带鱼类胚胎期暴露在空气中是否减轻了高水生CO2的影响？这些研究领域将为培养学生的研究，分析，沟通，团队合作和领导力奠定基础，同时创造一个吸引来自各种背景的学生的培训环境。我的研究重点是气候变化对加拿大主要商业，文化和生态重要鱼类的影响，以争取可持续的新蓝色经济。只有更好地了解气候变化变量如何影响具有重要商业价值的鱼类物种的健康和发展，我们才能推进渔业和水产养殖管理、粮食安全和福利标准，以更可持续地利用海洋资源。