Invasion

Invasion Description

1st Record: Astoria/OR/Columbia River (2008, Smits et al. 2013, in low abundance, 0.12/L, found through 2011)

Geographic Extent

Astoria/OR/Columbia River (2008, Smits et al. 2013, in low abundance, 0.12/L, found through 2011); Vancouver/WA/Columbia River().5 % of zooplankton individuals (2005-2015, peak abundance in 2010, Dexter et al. 2015); WA/Potholes Reservoir and the adjacent Canal #1, and Moses Lake, Upper Columbia River watershed (8/2012, Smits et al. 2013; Emerson et al. 2014); Vancouver/WA/Vancouver Lake (6/2006, Lee et al. 2016, tidal Coumbia River tributary lake)