“…This species is known to have large impacts on North American pelagic zooplankton (Yan et al, 2011) and has been implicated in declines in cladocerans in Lake Michigan (Lehman and C aceres, 1993;Schulz and Yurista, 1995;Barbiero and Tuchman, 2004;Vanderploeg et al, 2012), Lake Huron (Bunnell et al, 2011;Bunnell et al, 2012), and smaller lakes (Wahlstr€ om and Westman, 1999;Yan et al, 2001Yan et al, , 2011Hoffman et al, 2001;Strecker and Arnott, 2008). In addition, Bythotrephes is known to induce vertical migration in daphniids and some copepods in the laboratory (Pangle et al, 2007;Bourdeau et al, 2011); an effect also observed in field studies from Lake Michigan (Bourdeau et al, 2011) and elsewhere (Hessen et al, 2011;Jokela et al, 2011).…”