Lake sturgeon release into Kalamazoo River set for Sept. 6
The Department of Natural Resources, in collaboration with several partners, invites the public to join in celebrating the September release of juvenile lake sturgeon from the New Richmond facility into the Kalamazoo River.
The public event, scheduled to run 10 a.m. to 2 p.m. Saturday, Sept. 6, will be at New Richmond Bridge County Park located at 5740 Old Allegan Road in Manlius Township, Michigan. Guest parking is available on both the north and south sides of the Kalamazoo River.
The public is invited to mark the occasion with a full day of events, including guided tours of New Richmond Bridge County Park and the lake sturgeon rearing facility, food, music, gifts, a turning of the historic New Richmond swing bridge, tribal ceremony, and, of course, the release of the juvenile lake sturgeon into the river. Read more
The snuffbox mussel is inconspicuous, yet in many ways is a lie-in-wait predator. But instead of eating her prey, she uses the unsuspecting victim as host to her young. Mussels have a fascinating life history. Mussel babies, called glochidia, need to attach to the gills or fins of a specific type of fish to complete their life cycle. Snuffbox moms with babies sit in the bottom of a stream with their shells open somewhat to display their mantle (their fleshy body inside the shell). A fish swimming by will see that nice, soft flesh and think it’s a free meal. The fish will swim down and try to take a bite of the mussel’s mantle. Once the snuffbox feels the fish poke it, it grabs on to the fish’s head – for the snuffbox the particular fish host is a logperch. Mussels don’t have eyes, so it is purely by feel that the mussel grabs the fish. The mom snuffbox then shoots her microscopic glochidia at the fish’s head so that her young can attach to its gills. The glochidia mature within a few weeks and then drop off the host fish and live out the rest of their life on the stream bottom among the rocks. The glochidia don’t hurt the fish, and the process provides a great way for mussels to move away from their parents – it’s a free ride out of town. 
The snuffbox (Epioblasma trquetra) is a remarkable mussel that is in danger of becoming extinct. Unfortunately there are many threats to this species. Dams affect their ability to move both upstream and downstream, which can isolate populations. Mussels live most of their lives in a very small area, so toxins and poor water quality can easily harm them. Invasive species have also played a role in the decline of snuffbox. Zebra mussels often use any hard surface to attach to, including native mussels like the snuffbox, which end up suffocating because they can’t open their shells. 
Lake sturgeon, the only sturgeon species common to the Great Lakes basin, are the largest freshwater fish native to that system. Lake sturgeon can be considered a near-shore, warm-water species preferring water temperatures in the range of mid-50 to low-70 degrees Fahrenheit and depths 15 to 30 feet (although sturgeon in the Great Lakes are often found at greater depths). Lake sturgeon are benthivores, which means they feed on small invertebrates such as insect larvae, crayfish, snails, clams and leeches they find along the bottom of lakes and rivers. 