Keeping Up the Fight Against Aquatic Invaders

The States and Provinces continue to lead the fight against aquatic invasive species. In 2020, Michigan, Ohio, and Ontario have all taken actions to keep the “least wanted” AIS out of the Great Lakes St. Lawrence River Basin.

Michigan and Ohio both added Marbled crayfish, also known as marmorkrebs, to prohibited species lists. These aquatic invaders are popular in the aquarium trade due to their unique ability to reproduce by cloning. Marbled crayfish can quickly reproduce and dominate lakes, rivers, and streams, while limiting food sources for native species.

Ohio also prohibited New Zealand Mud Snail, which can reproduce rapidly and overrun waterways. Ontario recently completed a public consultation period for potential regulations for several AIS, including five species included on the “least wanted” list. Overall, the States and Provinces have taken more than 50 actions to prevent invasion by high-risk species.