SEA LAMPREY: A recently discovered chemical compound that makes it difficult for invasive sea lamprey to find their breeding grounds in Northern Michigan streams may be a new tool for controlling a parasite that threatens Great Lakes fish. We hear from the MSU fisheries and wildlife professor who leads the research team and the Great Lakes Fishery Commission. By Ben Eiler. FOR LUDINGTON, TRAVERSE CITY, MONROE, MARQUETTE, ALPENA, SAULT STE. MARIE, ALCONA, HOLLAND, OCEANA, LEELANAU, PETOSKEY, HARBOR SPRINGS, CADILLAC, CHEBOYGAN, ST. IGNACE, BIG RAPIDS, CRAWFORD COUNTY, BAY MILLS AND ALL POINTS.