2001-2023年北密歇根湖Burbot种群动态及Burbot对新放养湖鳟鱼的捕食

IF 2 3区农林科学 Q2 FISHERIES

Fisheries Management and Ecology Pub Date : 2025-01-12 DOI:10.1111/fme.12787

Charles P. Madenjian, Benjamin S. Leonhardt, Patricia M. Dieter, Steven A. Farha

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引用次数: 0

摘要

尽管最近已经评估了世界范围内全北极分布的白鱀豚（Lota Lota）的状况，但对贻贝入侵水域中白鱀豚丰度的不利影响尚未进行调查。我们分析了2001-2023年密歇根湖北部年度春季刺网调查的数据，以表征burbot种群动态。2001-2023年，密歇根湖北部成年burbot的丰度既没有明显的上升趋势，也没有明显的下降趋势。因此，2003-2008年期间，白斑贻贝（Dreissena rostriformis bugensis）种群在密歇根湖较深水域的扩张对burbot丰度没有明显的负面影响。到2023年，Burbot继续以密歇根湖北部保护区的湖鳟鱼（Salvelinus namaycush）为食，这支持了一个假设，即Burbot种群可能会阻碍保护区的湖鳟鱼恢复。

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Burbot Population Dynamics in Northern Lake Michigan, 2001–2023, and Predation on Newly Stocked Lake Trout by Burbot

Although the worldwide status of burbot (Lota lota) across its Holarctic distribution has recently been assessed, adverse effects of dreissenid mussels on burbot abundance in waters invaded by mussels have not been investigated. We analyzed data from an annual spring gillnet survey to characterize burbot population dynamics in northern Lake Michigan during 2001–2023. Adult burbot abundance in northern Lake Michigan trended neither significantly upward nor downward during 2001–2023. Thus, expansion of the quagga mussel (Dreissena rostriformis bugensis) population into deeper waters of Lake Michigan during 2003–2008 had no detectable negative effects on burbot abundance. Burbot continued to feed on lake trout (Salvelinus namaycush) stocked in the Northern Refuge of Lake Michigan through 2023, which supported a hypothesis that the burbot population potentially impeded lake trout restoration in the refuge.

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来源期刊

Fisheries Management and Ecology 农林科学-渔业

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Fisheries Management and Ecology is a journal with an international perspective. It presents papers that cover all aspects of the management, ecology and conservation of inland, estuarine and coastal fisheries. The Journal aims to: foster an understanding of the maintenance, development and management of the conditions under which fish populations and communities thrive, and how they and their habitat can be conserved and enhanced; promote a thorough understanding of the dual nature of fisheries as valuable resources exploited for food, recreational and commercial purposes and as pivotal indicators of aquatic habitat quality and conservation status; help fisheries managers focus upon policy, management, operational, conservation and ecological issues; assist fisheries ecologists become more aware of the needs of managers for information, techniques, tools and concepts; integrate ecological studies with all aspects of management; ensure that the conservation of fisheries and their environments is a recurring theme in fisheries and aquatic management.