Pleurobema oviforme
VU

Pleurobema oviforme

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Pleurobema_oviforme

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Tennessee Clubshell faces severe population declines primarily due to dam construction and river channelization that have altered natural flow regimes and sediment transport patterns essential for its survival. Water quality degradation from agricultural runoff and urban development has reduced oxygen levels and increased sedimentation in its remaining habitat. The species' dependence on specific fish hosts for larval development makes it particularly vulnerable to declining fish populations caused by habitat fragmentation and pollution.

Threat summary

Habitat

The Tennessee Clubshell inhabits medium to large rivers with stable gravel and sand substrates, typically in areas with moderate to swift currents. It requires clean, well-oxygenated water and is found buried in sediments of river bottoms in the Tennessee and Cumberland River systems.

FRESHWATER· major

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Frequently asked questions

Why is Pleurobema oviforme classified as Vulnerable?
Pleurobema oviforme is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Tennessee Clubshell faces severe population declines primarily due to dam construction and river channelization that have altered natural flow regimes and sediment transport patterns essential for its survival. Water quality degradation from agricultural runoff and urban development has reduced oxygen levels and increased sedimentation in its remaining habitat. The species' dependence on specific fish hosts for larval development makes it particularly vulnerable to declining fish populations caused by habitat fragmentation and pollution.
Where does Pleurobema oviforme live?
Pleurobema oviforme occurs in Brazil, and United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Pleurobema oviforme?
The main threats to Pleurobema oviforme are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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