Lasmigona decorata
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Carolina_heelsplitter
Overview
The Carolina heelsplitter is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. It is named the "Carolina heelsplitter" because the sharp edge of the valves protrudes from the substrate and could cut the foot of someone walking on the river or stream bed. This species is endemic to the United States and is found in only North Carolina and South Carolina.
Lasmigona decorata faces severe population declines primarily due to habitat degradation from agricultural runoff and urban development in its watershed. Dam construction and water diversions have altered natural flow regimes essential for reproduction and juvenile recruitment. Sedimentation from erosion has degraded the clean gravel substrates this species requires for filter feeding and spawning.
Habitat
This freshwater mussel inhabits clean, flowing rivers and streams with stable gravel and sand substrates. It requires well-oxygenated waters with minimal sedimentation and depends on specific fish hosts for larval development.
Other threatened species in UNIONIDAE
Threatened in United States
Frequently asked questions
Why is Lasmigona decorata classified as Critically Endangered?
Where does Lasmigona decorata live?
What are the main threats to Lasmigona decorata?
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