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首页> 外文期刊>ICES Journal of Marine Science >Wrasse fishery on the Swedish West Coast: towards ecosystem-based management
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Wrasse fishery on the Swedish West Coast: towards ecosystem-based management

机译：瑞典西海岸濑鱼渔业：走向生态系统的管理

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摘要

Fishing and translocation of marine species for use in aquaculture is widespread. Corkwing, goldsinny, and ballan wrasse (Symphodus melops, Ctenolabrus rupestris, and Labrus bergylta) are fished on the Swedish west coast for use as cleaner-fish in Norwegian salmon farms. Here, we aim to provide knowledge and recommendations to support ecosystem-based management for wrasse fisheries in Sweden. We compared fished and non-fished areas to test if current fishery levels have led to stock depletion. To gain insight on the role of wrasse in the algal belt trophic chain, we analysed the gut contents of goldsinny and corkwing using metabarcoding. Finally, we analysed the trophic interactions of wrasse and potential prey in a mesocosm study. We could not detect any signs of stock depletion or altered size structure in fished areas compared to the protected control area. Gut analyses confirmed both goldsinny and corkwing as non-specialized, omnivorous opportunists and revealed, with 189 prey taxa detected, a broader spectrum of prey than previously known. Common prey items included mesoherbivores such as small gastropods and crustaceans, but also insects and algae. We conclude that there are no visible signs of stock depletion at the current removal level of wrasses by the fishery. However, this emerging fishery should be closely monitored for potential cascading effects on the algal belt ecosystem, and our study could provide a baseline for future monitoring.
机译：水产养殖中使用的海洋物种的钓鱼和迁移是普遍的。 Corkwing，Goldsinny和Ballan Wrasse（Symphodus melops，Ctenolabrus rupestris和Labrus bergylta）在瑞典西海岸捕猎，以便在挪威鲑鱼农场的清洁鱼。在这里，我们的目标是提供知识和建议，以支持瑞典濑鱼的基于生态系统的管理。我们比较了当前渔业水平导致股票消耗的捕捞和非捕捞区域进行测试。要深入了解濑鱼在藻类传送带中的作用，我们分析了使用Metabarcoding的Goldsinny和Corkwing的肠道内容。最后，我们分析了中核科学研究中克拉索和潜在猎物的营养互动。与受保护控制区域相比，我们无法检测到捕捞区域中的股票耗尽或改变尺寸结构的迹象。肠道分析证实了Goldsinny和Corkwing都是非专业化的，杂乱的机会主义者，并透露，检测到189个猎物分类群，比以前所知的更广泛的猎物。常见的猎物物品包括Mesoherbivores，如小吃和甲壳类动物，也包括昆虫和藻类。我们得出结论，在渔业的目前的去除水平上没有明显的股票耗尽迹象。但是，应密切监测该新兴渔业以对藻类皮带生态系统的潜在级联影响，我们的研究可以为未来的监测提供基线。

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