Somatogyrus tennesseensis
Overview
The opaque pebblesnail, scientific name Somatogyrus tennesseensis, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. The natural habitat of this species is rivers.
Somatogyrus tennesseensis faces severe threats from water pollution and habitat degradation in Tennessee's spring systems. Dam construction and groundwater extraction have altered natural flow regimes, while agricultural runoff and urban development introduce harmful chemicals and sediments into its fragile aquatic environment. The species' extremely limited range makes it particularly vulnerable to any localized environmental disturbance.
Habitat
This freshwater gastropod inhabits spring-fed streams and seeps in Tennessee, requiring clean, well-oxygenated water with stable temperatures and consistent flow. It typically occurs in areas with limestone substrates where groundwater emerges, creating the specialized microhabitats essential for its survival.
Other threatened species in LITHOGLYPHIDAE
Threatened in United States
Frequently asked questions
Why is Somatogyrus tennesseensis classified as Critically Endangered?
Where does Somatogyrus tennesseensis live?
What are the main threats to Somatogyrus tennesseensis?
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