Historical trophic structure of two diadromous fish species using compound specific isotope analysis of archived tissue

使用存档组织的复合特定同位素分析研究两种产鱼鱼类的历史营养结构

• 批准号: 556498-2020
• 负责人: Tremblay, Luc
• 金额: $ 1.46万
• 依托单位: Université de Moncton
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=705546
• 关键词: Historical; trophic; structure; two; diadromous

Diadromous fishes (migratory between freshwater and saltwater), such as Atlantic Salmon and Striped Bass, are important to Canada for their ecological as well as economic, cultural, and human subsistence value. In recent decades, the number of Atlantic Salmon returning to the Miramichi River has declined to historic lows, whereas Striped Bass abundance has had a dramatic recovery. The causes of these variations remain unknown in part because the history of the feeding ecology of these fish populations is not well understood. Our project will reveal the history of the feeding position of these two predatory species with an emerging and powerful laboratory approach referred to as compound-specific isotopic analysis of amino acids (CSIA-AA). Our alliance capitalizes on state-of-the-art lab techniques and equipment from Université de Moncton and on an existing long-term Fisheries and Oceans Canada (DFO) scale archive (1960-2019) of Atlantic salmon and Striped Bass from the Miramichi River. This alliance will join DFO scientists with analytical chemists from Université de Moncton in collaboration to advance the application of CSIA-AA to study feeding ecology. The diverse scientific backgrounds of the partners and collaborators involved represent an opportunity for innovation and training. Trainees will acquire advanced skills that will be unique in New Brunswick. The knowledge gained from this work will be novel and timely as stakeholders demand that fisheries management consider more environmental information in their decision making. Further, CSIA-AA has a promising future as a tracer with applications to many fields.

溯河产卵鱼类（在淡水和咸水之间洄游），如大西洋鲑鱼和条纹鲈鱼， 对加拿大来说，它们的生态、经济、文化和人类生存价值都很重要。在 近几十年来，返回米拉米奇河的大西洋鲑鱼数量已降至历史低点， 而条纹鲈鱼的数量却有了戏剧性的恢复。这些变化的原因仍然不明 部分原因是这些鱼类种群的摄食生态学历史还没有得到很好的理解。我们的项目 将揭示这两个掠食性物种的觅食位置的历史， 实验室方法称为氨基酸的化合物特异性同位素分析（CSIA-AA）。我们 联盟利用了蒙克顿大学最先进的实验室技术和设备， 现有的长期渔业和海洋加拿大（DFO）规模档案（1960-2019）的大西洋鲑鱼和 米拉米奇河的条纹鲈鱼该联盟将加入DFO科学家与分析化学家， 蒙克顿大学合作推进CSIA-AA在研究摄食生态学中的应用。的 参与的合作伙伴和合作者的不同科学背景代表了一个机会， 创新和培训。受训者将获得在新玩法独一无二的高级技能。的 从这项工作中获得的知识将是新颖和及时的，因为利益攸关方要求渔业管理部门 在决策中考虑更多的环境信息。此外，CSIA-AA的未来充满希望 作为一种示踪剂，在许多领域都有应用。