Study finds recreational fishing is a major but under-regulated driver of aquatic invasive species spread
By
Jingrui Sun
Toasted to a respectable shade. No regrets, no crumbs left.
Summary
This study systematically reviews global evidence on how recreational fishing contributes to the spread of aquatic non-native species. Analyzing 140 studies, the researchers identified four major introduction pathways: intentional stocking, live bait use, fishing gear/equipment, and direct release by anglers. Research is heavily concentrated in North America and Europe, while regions with growing recreational fishing participation (Asia, Africa, South America) remain understudied. Intentional stocking is the dominant pathway, especially for fish like salmonids, while live bait and equipment spread invertebrates, plants, and pathogens. The authors conclude that recreational fishing is a globally important but under-governed invasion pathway requiring stronger regulation, biosecurity measures, and more research in underrepresented regions.
Key quotes
· 5 pulledRecreational fishing provides substantial socio-economic benefits worldwide, yet its role in driving aquatic biological invasions remains insufficiently understood.
Research effort is highly uneven, with strong concentrations in North America and Europe, whereas regions with large or rapidly expanding recreational fishing participation, including parts of Asia, Africa, and South America, remain poorly studied.
Intentional stocking was the dominant pathway, particularly for fish, whereas live bait and contaminated equipment contributed to the movement of invertebrates, aquatic plants, pathogens, and associated organisms.
Our synthesis highlights recreational fishing as a globally important but under-governed invasion pathway.
Effective prevention will require pathway-based regulation, stronger control of stocking and live bait trade, improved angler biosecurity, and targeted research in underrepresented regions.
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