Unhappy as clams

You'd think mussels in a bed bathed with water containing Prozac would be as happy as clams…well it seems the opposite holds true. Rebecca Heltsley of the National Institute of Standards and Technology, in Charleston, South Carolina, told the 232nd national meeting of the American Chemical Society, that mussels are anything but happy. She and her colleagues studied the ecotoxicological effects of Prozac (fluoxetine) on freshwater mussels and have found that the drug triggers the females release their larvae prematurely. About 70% of the almost 300 species of freshwater mussels native to North America are extinct, endangered or declining, she said. "The presence of Prozac and similar drugs in US rivers and streams has likely compounded the problem," Heltsley said. "It's a big concern because freshwater mussels are such an imperiled group."