Great Lakes Restoration Initiative funds prevention of newly introduced invasive fish in the Great Lakes. Like a barcode on a cereal box, every species has a unique DNA sequence. The U.S. Fish and Wildlife Service uses environmental DNA, or eDNA, to detect these invaders. Testing the water, scientists can identify fish species present in an area by looking at the DNA they leave behind — a vital clue to combat invasive species early. This important work addresses the threat of invasive species before they cause wide-spread, expensive damage.
Link to full story: You can swim, but you can’t hide | U.S. Fish & Wildlife Service