Westwards expansion of the European catfish Silurus glanis in the Douro River (Portugal)

IF 1.2 4区 环境科学与生态学 Q4 LIMNOLOGY Limnetica Pub Date : 2023-03-17 DOI:10.23818/limn.43.01
Christos Gkenas, Joana Martelo, Diogo Ribeiro, João Gago, Gil Santos, Diogo Dias, Filipe Ribeiro
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Abstract

The current study reports the first occurrence and the spread of the European catfish Silurus glanis (Family: Siluridae) in the Portuguese section of the Douro River, suggesting a potential expansion of its distribution in Portugal either via westward dispersal across international rivers and/or human-assisted introductions into new reservoirs and drainages. The European catfish has unique features (e.g., opportunistic predator, hunting, and aggregation behaviour) that make it highly suitable for establishing self-sustaining populations in new areas and likely contribute to its invasion success. The species may severely affect native prey communities and modify food web structure and ecosystem functioning. Efficient and sustainable management actions are needed to prevent further introductions in the future.
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欧洲鲶鱼Silurus glanis在杜罗河的向西扩张(葡萄牙)
目前的研究报告了欧洲鲶鱼Silurus glanis(科:Siluridae)在杜罗河葡萄牙段的首次出现和传播,表明其在葡萄牙的分布可能通过向西扩散跨越国际河流和/或人类辅助引入新的水库和排水系统而扩大。欧洲鲶鱼具有独特的特征(例如,机会主义捕食者,狩猎和聚集行为),使其非常适合在新地区建立自我维持的种群,并可能有助于其入侵的成功。该物种可能严重影响本地猎物群落,改变食物网结构和生态系统功能。需要采取有效和可持续的管理行动,以防止今后进一步引进。
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来源期刊
Limnetica
Limnetica LIMNOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
3.70
自引率
7.10%
发文量
26
审稿时长
>12 weeks
期刊介绍: Limnetica publishes original research articles on the ecology of inland waters. The scope of Limnetica includes the ecology of rivers, lakes, reservoirs, coastal lagoons and wetlands, as well as biogeochemistry, paleolimnology, development of new methodologies, taxonomy, biogeography and any aspect of theoretical and applied continental aquatic ecology such as management and conservation, impact assessment, ecotoxicology and pollution. Limnetica will accept for its publication scientific articles presenting advances in knowledge or technological development, as well as as papers derived from new practical approaches on the topics covered by the journal.
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