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Non-native freshwater fish escaped from aquaculture in China: too much of a good thing is not always the best

文献类型： 外文期刊

作者： Wei, Hui 1 ; Xu, Meng 1 ; Fang, Miao 1 ; Yu, Fandong 1 ; Shu, Lu 1 ; Wang, Xuejie 1 ; Li, Shan 2 ; Gu, Dangen 1 ;

作者机构： 1.Chinese Acad Fisheries Sci, Pearl River Fisheries Res Inst, Key Lab Prevent & Control Aquat Invas Alien Specie, Minist Agr & Rural Affairs,Key Lab Alien Species &, Guangzhou 510380, Guangdong, Peoples R China

2.Shanghai Nat Hist Museum, Branch Shanghai Sci & Technol Museum, Shanghai, Peoples R China

关键词： management; translocated; non-native aquaculture species; invasion; process; sustainable aquaculture

期刊名称：MANAGEMENT OF BIOLOGICAL INVASIONS （ 影响因子：1.2； 五年影响因子：1.6 ）

ISSN： 1989-8649

年卷期： 2025 年 16 卷 1 期

页码：

收录情况： SCI

摘要： China has the world's largest aquaculture production that partly benefits from introduction of high-quality germplasm from both abroad and within the country. However, the rivers, lakes and reservoirs of China face a high risk of invasion non-native freshwater fish associated with aquaculture. In this study, we used peer reviewed and grey literature in combination with a field survey to investigate status, pathways, mechanisms and management of non-native freshwater fish aquaculture in China. Production of non-native freshwater fish accounts for 8% total aquaculture in China and is dominated by tilapia, bass, ictalurid, pirapitinga, salmon, trout and sturgeon. However, the escape of non-native fish resulting from unstrict farming management, fishery stocking and mercy release has been frequently reported. In total, 155 non-native freshwater fish species have escaped into natural waters. Among these species, 102 are aquacultural of which 59 translocated and introduced from abroad. Introduced species have been mainly reported from southern China, whereas translocated species from the north and west of the country. Available data suggest that non-native fish associated with aquaculture have escaped into main rivers of China. However, the real risk posed by non-native fish to native species and the ecosystem has been hardly evaluated due to the lack of basic information on population dynamics of non-native fish. Despite management strategies for nonnative species having achieved substantial progress in recent years in China, development of a suitable transformation strategy for aquaculture to fulfil Sustainable Development Goals remains challenging. Academia, government and stakeholders should work jointly to develop management strategies to mitigate the risks posed by non-native species in aquaculture.

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