Stories tagged aquatic species

Mar
03
2014

Numbered days?: Zebra mussels totally cover a piece of underwater equipment from Lake Michigan.
Numbered days?: Zebra mussels totally cover a piece of underwater equipment from Lake Michigan.Courtesy M. McCormick
For more than 20 years, zebra mussels have gone unchecked in midwest waters. Introduced to North America as stow-away passengers on the bottoms of Great Lakes shipping vessels that came from Europe, the invasive species have exploded to fresh waters in 34 states at an alarming rate.

But their days may be numbered. A New York-based researcher has discovered a bacterium that can kill zebra mussels (and also the related invasive species quagga mussels) without disrupting the rest of the food web.

After rounds of lab testing, the Environmental Protection Agency has okayed the commercial production of Pseudomonas fluorescens strain CL145A, which can then be applied to waters and kill the menacing mussels. In lab tests, the bacterium killed over 90 percent of the the invasive mussels in came in contact with.

Along with pushing out other species in the waters, the invasive mussels have also become a nuisance by clogging up intake pipes at water plants and attaching themselves to docks, piers and other submerged water equipment. Plans are still being developed on how to apply this new bacterium to the waters. All wise zebra mussels might want to start packing their bages and heading back to Europe before they find out what this new bacterium has in store for them!