University of North Texas biologists say they have found zebra mussels in the Trinity River in Denton County, less than a year after the invasive species was discovered in Lake Ray Roberts.
The first sample was found during a research trip by several biology students. Senior Bethany Hambrick made the find under a rock about a mile south of Lake Ray Roberts.
“I was looking for fossils and freshwater mussel cells and picked up a rock, and I knew that the morphology was not anything that I’d seen before,” she said. “I had a suspicion it was a zebra mussel, and that was sadly confirmed.”
Large colonies of the species were discovered in Lake Ray Roberts last summer and at Lake Texoma about three years earlier, but this is the first time any have been found in a Texas river.