Invertebrates

Freshwater Mussel Conservation and Welfare

Freshwater mussels are the most endangered group of animals in North America, with welfare implications for both wild and cultured populations.

Key Facts

North America has the most diverse freshwater mussel fauna in the world, with over 300 species
Over 70% of North American freshwater mussel species are threatened, endangered, or extinct
Freshwater mussels filter and clean enormous volumes of water, providing ecosystem services
Commercial mussel culture for food raises questions about invertebrate welfare
Mussels have basic nervous systems; the evidence for their sentience is weaker than for vertebrates

Welfare Considerations

Freshwater mussel conservation represents a case where the welfare evidence is uncertain but the conservation need is clear. Whether mussels have subjective experiences of suffering is not established, but the precautionary principle suggests treating them with consideration. More importantly, the loss of freshwater mussel diversity has cascading welfare effects on fish and other species that depend on clean water and the ecological services mussels provide.

What You Can Do

Support freshwater conservation programs that protect mussel habitat
Reduce pollution and nutrient runoff that degrades freshwater mussel habitat
Advocate for dam modification and removal that restores mussel habitat connectivity
Donate to freshwater mussel captive breeding and reintroduction programs
Support research into freshwater mussel welfare and conservation biology