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Unique mussel that relies on mudpuppy salamanders proposed as endangered

By Rebecca Thiele

Posted August 23, 2023

mussel

The salamander is the only mussel in North America whose larvae survives on the gills of a salamander. Most freshwater mussels use fish as hosts. (Megan Bradley / U.S. Fish And Wildlife Service)

The U.S. Fish and Wildlife Service wants to list a unique mussel native to Indiana as a federally endangered species. The salamander mussel is already a state species of special concern.

It’s the only mussel in North America whose larvae survives on the gills of a mudpuppy salamander. Most freshwater mussels use fish as hosts.

Water pollution, dams, landscape changes, invasive species and risks to the mudpuppy have all caused the salamander mussel’s populations to decline.

Freshwater mussels are very sensitive to water quality changes. According to the Indiana Department of Natural Resources, nearly half of all freshwater mussels in Indiana are either endangered, a species of special concern, or can no longer be found in the state.

READ MORE: The northern long-eared bat is now a federally endangered species

Join the conversation and sign up for the Indiana Two-Way. Text "Indiana" to 73224. Your comments and questions in response to our weekly text help us find the answers you need on statewide issues, including this series on climate change and solutions.

The Fish and Wildlife Service has proposed protecting more than 2,000 river miles as critical habitat for the species — including parts of Fish Creek, Big Pine Creek, Middle Fork Wildcat Creek and the Tippecanoe River in Indiana.

The public has until Oct. 23 to comment on the proposed listing.

Rebecca is our energy and environment reporter. Contact her at rthiele@iu.edu or follow her on Twitter at @beckythiele.

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