Northern riffleshell: Difference between revisions
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* [http://www.natureserve.org/explorer/servlet/NatureServe?searchName=EPIOBLASMA+TORULOSA+RANGIANA Report from NatureServe Explorer] |
* [http://www.natureserve.org/explorer/servlet/NatureServe?searchName=EPIOBLASMA+TORULOSA+RANGIANA Report from NatureServe Explorer] |
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[[Category: |
[[Category:Unionidae]] |
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Revision as of 20:20, 5 December 2007
| Northern riffleshell | |
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| File:Northern Riffleshell.jpg | |
| Scientific classification | |
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| Subspecies: | E. t. rangiana
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| Trinomial name | |
| Epioblasma torulosa rangiana (I. Lea, 1838)
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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.
References
- Template:IUCN2006 Database entry includes a brief justification of why this subspecies is critically endangered and the criteria used
- Report from NatureServe Explorer