New research sheds light on the decline of Minnesota’s moose population August 21, 2023 Minnesota saw a 58% decline of the moose population in the northeastern part of the state between 2006 and 2017. A primary driver of the decline is brainworm, a parasite that affects the animal’s nervous system ultimately leading to paralysis and read more University of Minnesota: New research sheds light on the decline of Minnesota’s moose population