Three small lakes near Winona, Minnesota, were sampled to determine if they supported populations of Hexagenia mayfly nymphs. Hexagenia nymphs were rare in Lake Winona and the Gravel Pit, and none was found in Crooked Slough. A low dissolved oxygen content at the mud-water interface is probably the limiting factor in Lake Winona and Crooked Slough. The limiting factor in the Gravel Pit is probably the bottom type.
Erickson, J. R.
Three Southeastern Minnesota Lakes as Possible Habitat For Hexagenia Mayflies.
Journal of the Minnesota Academy of Science, Vol. 32 No.1, 24-25.
Retrieved from https://digitalcommons.morris.umn.edu/jmas/vol32/iss1/6