Invasive fish and mussels team up to transfer toxic substances into Great Lakes walleyes
Friday, April 9, 2010 - 22:28
in Earth & Climate
Two notorious Great Lakes invaders -- the zebra mussel and the round goby -- now play a central role in transferring toxic chemicals called PCBs up the food chain and into Saginaw Bay walleyes, one of that region's most popular sport fish.