The Mapleleaf (Quadrula quadrula) and Rainbow (Villosa iris) are freshwater mussels of the family Unionidae that have similar needs and share similar geographic ranges in Canada. As these species of special concern frequently co-occur and share many common threats and limiting factors, they are being considered in a combined management plan. The population of interest is in the Great Lakes – Upper St. Lawrence and may be of interest to our Ontario members.

Consultation period: 2023-07-10 to 2023-09-08. To see the draft management plan, follow this link.