ANN ARBOR – The Great Lakes Fishery Commission reported last week that populations of the invasive, parasitic sea lamprey remain at near-historic lows, below targets, in Lakes Michigan and Ontario, and above target, but holding steady, in Lakes Huron, Superior and Erie.  

Sea lamprey populations in Lake Huron are close to target levels and have been holding steady for the past five years, according to the commission. Abundances in Lakes Superior and Erie remain above target but have also decreased significantly since the near-record highs observed in 2017.