In the South River we have not established a link between the tumors and PAH exposure. |
Since 1992, we have surveyed 10 other locations in the Chesapeake watershed. These catfish from the South River have the highest skin tumor rate and second highest liver tumor rate. |
The fish are clearly exposed to cancer-causing agents, and at this point, we really don't know what chemicals are responsible. We suspect it's from (polluted) runoff. |
We collected 30 fish from the South River near Annapolis last year. Sixteen fish had raised, pinkish red lesions around the mouth. |