Epioblasma brevidens
Overview
Epioblasma brevidens, the Cumberlandian combshell, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. This species is endemic to the United States, found mainly in the states of Tennessee and Virginia. This mussel resides in medium-sized streams to large rivers. The combshell is an endangered species and protected under the Endangered Species Act of 1973 (ESA). The combshell is threatened by habitat modifications and pollution.
Epioblasma brevidens faces severe threats from habitat degradation caused by dam construction, channelization, and sedimentation of river systems throughout its historic range. Water pollution from agricultural runoff and industrial discharge has further compromised water quality in remaining populations. The species' specialized reproductive strategy, requiring specific fish hosts for larval development, makes it particularly vulnerable to disruptions in aquatic ecosystem integrity.
Habitat
Epioblasma brevidens inhabits clean, flowing waters of medium to large rivers with stable gravel and sand substrates. The species requires well-oxygenated water with minimal siltation and depends on specific fish species as hosts for its parasitic larval stage.
Other threatened species in UNIONIDAE
Threatened in Russia
Frequently asked questions
Why is Epioblasma brevidens classified as Critically Endangered?
Where does Epioblasma brevidens live?
What are the main threats to Epioblasma brevidens?
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