Species Regional Summary
Ictalurus punctatus
Columbia River ( P260 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Record: Bonneville Dam/OR/Columbia River (1945, Lampman 1946, 1 fish)

Geographic Extent

Bonneville Dam/OR/Columbia River (1945, Lampman 1946, 1 fish); Dayton/OR/Columbia River (1946, Lampman 1946, 1 fish); Portland/OR/Lower Willamette River (1990, Farr and Ward 1993); Milwaukee to mouth/OR/Willamette River (2001,

Vectors

Level Vector

Regional Impacts

Economic ImpactFisheries
Channel Catfish is an important sport fish in the Columbia River (Oregon Department of Fisheries and Wildlife 2014; Washington Department of Fisheries and Wildlife 2014) http://wdfw.wa.gov/fishing/washington/Species/1171/, http://www.dfw.state.or.us/resources/fishing/warm_water_fishing/channel_catfish.asp
 
Ecological ImpactPredation
'In Columbia River reservoirs, large channel catfish (> 67 centimeters) consume thousands of juvenile salmon, which comprise 50% to 100% of their diets (Vigg et al. 1991). A single catfish eats an average of one juvenile salmon every three' (Sanderson et al. 2009).
 

References

Full Reference List for Ictalurus punctatus

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