CHEYENNE, Wyo. (AP) — A program to keep disruptive nonnative species out of Wyoming's waterways inspected nearly 43,000 boats at 32 different water areas in the state last year.

The Wyoming Game and Fish Department finished its second year with the Aquatic Invasive Species Program in 2011.

In addition to checking boats, crews monitor waters throughout the year to see if any invasive species are present.

In 2011, Game and Fish crews sampled 52 waters and found no signs of the larval form of zebra and quagga mussels.

But an invasive species, the Asian clam, was detected in the Laramie River, and the nonnative curly pondweed plant was detected in Lake DeSmet.