Distributed by the Government of Canada Publishing and Depository Services Program (Weekly acquisitions list 2022-11). Electronic monograph in PDF format.

Includes bibliographical references (pages 56-63).

Freshwater mussels of the Unionidae family are a diverse group of bivalves that live in rivers and lakes. Though widely distributed in Manitoba, mussels are poorly known by the general public. This report provides insight into the life cycle and critical roles played by mussels in freshwater ecosystems. This report further provides tools for species identification including a dichotomous key, colored shell images, and distribution maps. Current threats in Manitoba include aquatic invasive species and various anthropogenic activities that result in declining water quality and habitat degradation for mussels. Understanding current and future threats allows for better informed management decisions and conservation strategies for freshwater mussels in Manitoba. .

Includes abstracts in English and French.