Respiration flumes for studies of comparative energetics

用于比较能量学研究的呼吸槽

• 批准号: RTI-2019-00283
• 负责人: Leys, Sally
• 金额: $ 6.94万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657403
• 关键词: Respiration; flumes; studies; comparative; energetics

In marine and freshwater environments concentrations of dissolved gases can change over the short term in response to stressors such as increased temperature or exposure to environmental pollutants. Our groups study how tolerant modern animals are to different levels of dissolved gases in order to understand their ability to adapt to different stressors today. Concentrations of dissolved gases in the oceans have also changed in the course of the Earth's history, so our studies of the tolerance of modern animals to lower levels of oxygen can be used to infer what the first animals may have tolerated, and therefore what they may have looked like. In this proposal we request funds for a set of flow chambers to measure respiration in aquatic animals in a temperature- and flow-controlled environment. This equipment will allow our six students and PDFs to measure the impact of the exchange of oxygen and carbon dioxide in environmental chambers (ranging in size from half a millilitre to 30 litres) on animals as diverse as sponges and fish, and in embryos, juveniles and adults. The flow flumes will provide data on the thresholds of animals to changes in their water environment. These data will help reconstruct the history of animals and ecosystems on Earth. The data will also be used by federal, provincial and regional governments to establish effective management of marine and freshwater ecosystems today. *****

在海洋和淡水环境中，溶解气体的浓度会因温度升高或暴露于环境污染物等应激因素而在短期内发生变化。我们的团队研究现代动物对不同水平的溶解气体的耐受性，以了解它们适应当今不同压力的能力。海洋中溶解气体的浓度在地球历史的过程中也发生了变化，因此我们对现代动物对较低氧气水平的耐受性的研究可以用来推断第一批动物的耐受性，从而推断它们的样子。在本提案中，我们要求资金用于一套流动室，以测量水生动物在温度和流量控制环境中的呼吸。该设备将使我们的六名学生和PDF能够测量环境室（大小从半毫升到30升不等）中氧气和二氧化碳交换对海绵和鱼类以及胚胎，青少年和成年动物的影响。水槽将提供关于动物对水环境变化的阈值的数据。这些数据将有助于重建地球上动物和生态系统的历史。这些数据还将被联邦、省和地区政府用于建立当今海洋和淡水生态系统的有效管理。*****