The results were unexpected: They found adult walleye in lakes infested with zebra mussels had 72% higher mercury concentrations than in lakes without the invaders. In yellow perch — a common prey for walleye — the mercury concentrations were 157% higher.

Zebra mussels are significantly altering the ecosystems of Minnesota lakes, according to a study that ties the invasive species to higher mercury levels in fish.

A study found that invasive zebra mussels significantly alter aquatic ecosystems, and are associated with elevated mercury concentrations in fish. Mercury, a potent neurotoxin, poses a serious threat to both aquatic life and human health. Recently ...

Walleyes and perch taken from Minnesota lakes infested with zebra mussels contain starkly higher levels of mercury than those taken from uninvaded lakes, according to new University of Minnesota resea