Monday, November 30, 2009

Are You Sure That's Tuna You're Eating?


Next time you're craving sushi, think about this:

“A piece of tuna sushi has the potential to be an endangered species, a fraud or a health hazard,” wrote the authors. “All three of these cases were uncovered in this study.”

The team of researchers from Columbia University and the American Museum of Natural History ordered tuna from 31 sushi restaurants and then used genetic tests to determine the species of fishes in those dishes. More than half of those eateries misrepresented, or couldn’t clarify the type of fish they were mongering. Several were selling endangered southern bluefin tuna.

Although their results were shocking, exposing sloppy sushi joints wasn’t their main goal. The scientists were trying to improve on a new species-identification technique, called DNA barcoding. A coalition of labs has been collecting fish, reading their genes and uploading the information to a database called FISH-BOL.

FISH-BOL. Get it? Who says scientists aren't funny.