Northern riffleshell
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| iNorthern riffleshell | ||||||||||||||||
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| Epioblasma torulosa rangiana (I. Lea, 1838) |
The Northern riffleshell (Epioblasma torulosa rangiana) is an endangered subspecies of clam formerly found widely in the Ohio River basin, but now the population is fragmented with as few as three viable groups. It needs gravel river beds and swift-flowing, well-oxygenated water. The reduction in range seems to be principally due to damming and the consequential silting up of rivers below the dam and competition from zebra mussels.
[edit] References
- Bogan (2000). Epioblasma torulosa ssp. rangiana. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes a brief justification of why this subspecies is critically endangered and the criteria used
- Report from NatureServe Explorer
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