Zebra mussels get their name from the striped pattern of their shells and can grow to a maximum length of about 50 mm (5-10 mm in the first year) and live four to five years. Zebra mussels may disrupt the traditional aquatic food chain if their voracious filter feeding depletes the availability of microscopic organisms that play a critical part in each lake’s ecological food web.
Zebra mussels were confirmed in Lake John on September 24, 2015 by the MnDNR. On September 26, 2015 volunteer searchers from the Lake John Association and two searchers from Blue Water Science conducted a rapid response assessment/survey. A total of 31 man hours, about 1,500 feet of shoreline and/or a total area of 1.6 acres was searched. An estimated 8,520 objects were examined and approximately, 70 zebra mussels at six sites were found.
Continue reading for the complete survey results.