During October, the Alpena USFWS office conducted an annual survey to detect new populations and to monitor existing populations of invasive fish species. Bottom trawling gear is used during the survey to detect new populations of Eurasian ruffe and round goby, and to monitor existing populations of round goby at twelve shipping ports and rivers in U.S. waters of Lake Huron and the St. Marys River. No new populations of the invasive species were discovered; however, round goby continue to persist at 7 of 12 sampling locations. This survey provides early detection and monitoring for invasive species at 12 sites in Lake Huron and the St. Marys River.
Source: GREAT LAKES BASIN REPORT (A Publication of the Great Lakes Sport Fishing Council)