Post Date
December 16, 2020
![Map showing location of the quagga mussel control test sites in Lake Michigan](https://webarchive.library.unt.edu/web/20201218005131im_/https://www.glri.us/sites/default/files/styles/large/public/2020-12/studyareamap.jpg?itok=SWhVVJus)
The Invasive Mussel Collaborative (IMC) announced a remarkable decrease in quagga mussel density in the weeks following experimental treatments at a test site in Lake Michigan near Sleeping Bear Dunes National Lakeshore.
The IMC and partners tested a molluscicide treatment to reduce quagga mussel density on a reef in Good Harbor Bay and saw 95% reduction in mussel density following application of the treatment. The reduction of quagga mussels also led to a significant reduction in nuisance algae at the site.