Two years after the massive BP oil spill in the Gulf of Mexico, the news remains grim on numerous fronts, reports Mother Jones in an April 2012 series of environmental impact articles. Besides eyeless shrimp, toxic beaches and dead dolphins, Gulf oysters are now in trouble, and people who swim in the Gulf are picking up carcinogenic PAH compounds on their skin.
A team of scientists, led by Dr. Peter Roopnarine of the California Academy of Sciences, has learned that oysters now have higher concentrations of the heavy metals found in crude oil than they did before the spill. Roopnarine also discovered signs of metaplasia, a condition that occurs when tissues are transformed in response to stress, in the mollusks. The scientists don't yet know what these effects could have on high-level consumers in the food chain, which includes people who love Louisiana's famous Po' Boy sandwiches, but previous studies show heavy metal pollution combined with warmer temperatures are especially deadly in oysters.