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

基本信息

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

项目摘要

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.

二元鱼类（淡水和盐水之间的迁移），例如大西洋鲑鱼和条纹鲈鱼，对加拿大的生态，文化和人类生存价值对加拿大来说很重要。近几十年来，返回米拉米奇河的大西洋鲑鱼的数量下降到历史性的低谷，而条纹鲈鱼抽象的恢复却很大。这些变化的原因仍然未知部分原因是这些鱼类种群的喂养生态历史尚不清楚。我们的项目将揭示这两个掠食性物种的进食位置的历史实验室方法称为氨基酸（CSIA-AA）的化合物特异性同位素分析。我们的联盟利用蒙克顿大学的最先进的实验室技术和设备以及现有的长期渔业和海洋加拿大（DFO）规模档案（1960- 2019年），大西洋鲑鱼和来自Miramichi河的条纹鲈鱼。该联盟将与DFO科学家一起与来自蒙克顿大学合作，以推动CSIA-AA的应用来研究饲养生态学。这参与的合作伙伴和合作者的科学背景是一个机会创新和培训。学员将获得新不伦瑞克省独特的高级技能。从这项工作中获得的知识将是新颖和及时的，因为利益相关者要求渔业管理在决策中考虑更多环境信息。此外，CSIA-AA有希望的未来作为在许多领域的应用程序的示踪剂。