Assessment of Lake Sturgeon Reproductive Capacity and Associated Habitat Requirements in the North Saskatchewan and Saskatchewan River Systems

北萨斯喀彻温省和萨斯喀彻温省河流系统的湖鲟繁殖能力和相关栖息地要求的评估

基本信息

批准号：
544555-2019
负责人：
Rogers, Kevin
金额：
$ 4.37万
依托单位：
Saskatchewan Polytechnic
依托单位国家：
加拿大
项目类别：
Applied Research and Development Grants - Level 2
财政年份：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721000
关键词：
Assessment Lake Sturgeon Reproductive Capacity

项目摘要

This proposal, a collaboration with Husky Energy Ltd., concerns the management of risk factors affecting critically endangered Lake Sturgeon (Acipenser fulvescens) populations in the North Saskatchewan River. The initial objective was to better inform spawning and rearing habitat remediation efforts following an oil spill in spring 2016. Engage-funded research (2018) reported abundant spawning habitat in lower sections of the North Saskatchewan River, but did not detect spawning activity or spawn products. An unusually warm spring likely contributed to poor spawning conditions; water temperatures exceeded thresholds for Lake Sturgeon follicular development and egg incubation. Extreme water temperatures are an ongoing concern likely to accompany future climate change scenarios. To better evaluate links between spawning and available habitat, the research will focus on reproductive capacity within the population. Lake Sturgeon spawn intermittently due to an extended multi-year developmental cycle that differs for males and females. Typically, invasive procedures are required to distinguish between sexes and reproductive stages. Ultrasonography invites a new, non-invasive approach: adapting wireless handheld ultrasound vet scanners for the purpose of determining sex and reproductive capacity of Lake Sturgeon in the field. It would permit quantifying variable demand for spawning habitat in the Saskatchewan River system. This research has significant conservation value. It can allow fisheries managers to track proportionate investment and degree of synchrony among male and female spawners, permit future forecasts of spawning intensity, and assist in the delivery of instream flow needs. For Husky, and industries working in similar ecosystems, reproductive capacity would portend the risk of instream activities and help quantify the realized impacts of environmental perturbation. For Saskatchewan Polytechnic, this conservation-based research brings awareness to the endangered status of the Lake Sturgeon in the North Saskatchewan River, immediately adjacent to our home community of Prince Albert, and permits students & faculty researchers to develop applied, technological, analytical, and public outreach skills.

该提案是与Husky Energy Ltd.的合作，涉及影响北萨斯喀彻温省北部危险濒临灭绝的Sturgeon（Acipenser Fulvescens）种群的风险因素的管理。最初的目标是在2016年春季漏油后更好地告知产卵和饲养栖息地的修复工作。参与资助的研究（2018年）报告了北萨斯喀彻温省北部较低区域的大量产卵栖息地，但没有检测到产卵活动或产卵产品。异常温暖的春天可能导致产卵条件不佳。水温超过了st鱼肠卵泡发育和卵孵育的阈值。极端的水温是可能伴随未来气候变化情景的持续关注。为了更好地评估产卵与可用栖息地之间的联系，该研究将集中在人群中的生殖能力上。由于男性和女性的不同多年发育周期，Sturgeon湖的产卵间歇性产卵。通常，需要进行侵入性程序来区分性别和生殖阶段。超声检查邀请了一种新的非侵入性方法：适应无线手持式超声兽医扫描仪，目的是确定野外stege子的性别和生殖能力。它将允许量化萨斯喀彻温河系统中产卵栖息地的可变需求。这项研究具有显着的保护价值。它可以允许渔业经理跟踪男性和女性产卵者之间的比例投资和同步程度，允许未来的产卵强度预测，并协助提供工具流量需求。对于沙哑的行业，在类似的生态系统中工作，生殖能力将预示着乐器活动的风险，并有助于量化环境扰动的实现影响。对于萨斯喀彻温省理工学院，这项基于保护的研究使人们对北萨斯喀彻温河的Sturgeon濒临灭绝地位的认识紧接与我们的阿尔伯特亲王之家社区相邻，并允许学生和教师研究人员发展应用，技术，分析，分析和公共临界技能。