Angling as a source of non-native freshwater fish: a European review

Unwelcome exchange: International trade as a direct and indirect driver of biological invasions worldwide

“…For example, GDP has been a frequent metric used to explain variation among different countries in the number of alien species and often interpreted as an indication of the importance of international trade. [50][51][52][53][54][55][56] However, net exports (the value of exports minus imports) are only one component of GDP, and often represent a much smaller percentage than other components such as household spending, government spending, and investment. Thus, while economic growth may be an important driver of biological invasions, this may be due to many other factors unrelated to international trade.…”

“…For example, natural resource extraction, urbanization, harvesting of native forests, and the expansion of agricultural land are also important contributors to the GDP of a country, 111 which has frequently been found to correlate with total numbers of alien species. [50][51][52][53][54] However, while indirect effects of international trade on biological invasions undoubtedly occur, suitable analyses to document these effects have not been undertaken. Quantifying the indirect role of international trade on biological invasions through climate change and atmospheric pollution will be difficult due to the diffuse, transboundary chain of causation.…”

First record of the American cestodeProteocephalus ambloplitis(Leidy, 1887) (Proteocephalidae) in Europe

“…The Bègles Plage, the waterbody in which P. ambloplitis was registered, is an isolated artificial lake within a public recreational area; hence, natural range expansion is very unlikely. On the other hand, fish release for angling/aquacultural purposes is known to be one of the most frequent vectors of invasive fish introduction in Europe (Carpio et al ., 2019), while the intentional introduction of largemouth bass for angling purposes is the most likely vector of invasive trematode introduction (Kvach et al ., 2018a). As such, introduction of largemouth bass, along with the anthropogenic spread of potential hosts (e.g.…”

North American channel catfish, Ictalurus punctatus: a neglected but potentially invasive freshwater fish species?

“…This contrasts the concerted, comprehensive research on other non-native fishes from North American, such as pumpkinseed Lepomis gibbosus (Copp and Fox 2007;Fox and Copp 2014), black bullhead Ameiurus melas (Copp et al 2016a) and crucian carp (Tarkan et al 2016), and from Asia such as the topmouth gudgeon Pseudorasbora parva (Gozlan et al 2010). This scarcity of scientific study on channel catfish is surprising given its commercial importance to aquaculture and as a sport angling species in both its native and introduced ranges of North America (Brown 1942;Appelget and Smith 1951;Boyd et al 2000;Rezk et al 2003;Tucker and Hargreaves 2004;Simmons et al 2006), as well as in Europe (Carpio et al 2019). Dedicated studies of channel catfish impacts are limited to the experimental study of Adams (2007), though in a field-based study of non-native fish diet, Poe and Rieman (1988, p. 48) stated that channel catfish ''may also be an important predator on juvenile salmonids during the spring in the upper reservoir''.…”