Diet composition and overlap for adult walleye, lake whitefish, and yellow perch in Green Bay, Lake Michigan

Spawning Locations, Movements, and Potential for Stock Mixing of Walleye in Green Bay, Lake Michigan

“…2013), with higher productivity south of Chambers Island leading to a greater diversity of prey types found in Walleye diets (Koenig et al. 2022). Additionally, the invasion of dreissenid mussels in Little Bay de Noc has contributed to increased water clarity and declines in prey fish abundance (Zorn and Kramer 2021), possibly resulting in Walleye moving out of the area in search of greater forage resources elsewhere (Whitinger et al.…”

“…2018; Koenig et al. 2022) to separate northern and southern Green Bay, was chosen as the location for the paired receiver lines because it created a natural pinch point between areas of differing productivity and bathymetry in Green Bay. Paired receiver lines at Chambers Island allowed for estimation of large‐scale movement between southern and northern Green Bay and potential stock contributions to the fisheries in the southern and northern portions of the bay.…”

“…Furthermore, recent research has demonstrated that Walleye prey availability may differ between the northern and southern portions of Green Bay, as Walleye from southern Green Bay were found with a greater diversity of prey items (including Gizzard Shad Dorosoma cepedianum , Alewife Alosa pseudoharengus , Lake Whitefish Coregonus clupeaformis , and Round Goby Neogobius melanostomus ) in their diets than Walleye from northern Green Bay, where Alewife and Round Goby are the primary prey items (Koenig et al. 2022).…”