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#1 Most UNWANTED AIS
Zebra and Quagga Mussels - #1 Must Unwanted AIS
Zebra and Quagga Mussel

Zebra and quagga mussels have the potential to wreak havoc on waters of Wyoming and we must do what we can to prevent them from getting here. You can do your part by making sure your boat and gear is Drain, Clean, and Dry.

Origin: The Black and Caspian seas in Eurasia.

Distribution: They are widespread throughout the United States, most notably in neighboring Colorado and Utah. Invasive zebra and quagga mussels have not been found in Wyoming.

Impacts: They are very prolific and can completely infiltrate waters very rapidly. They remove nutrients from water, clog pipes and waterways, damage boats, and out-compete native mussels.

Dispersal: They are transported in water on boats as microscopic larvae or attached to the hull, motor, or other hard surface of a boat as juveniles or adults.

Characteristics: Typically striped, size less than 2 in, presence of byssal threads which allow them to attach to hard substances.

Additional Zebra and Quagga Mussel Information

Mussels on a lobster Mussels
Mussels on a shell Mussels on a propeller
If you see attached mussels on your boat or equipment or in Wyoming waters, please report it to 1-877-WGFD-AIS or ReportAIS@wyo.gov
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