Dromus dromas
Dromus dromas NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network. This mussel is yellow-green in color with interrupted green rays on the shell. The nacre is white, pink, or reddish. The species got its name from the distinctive hump on the shell of larger individuals
ITIS Reports — Dromus dromas ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video. Dromus dromas, the dromedary pearlymussel or dromedary naiad, is a rare species of freshwater mussel in the family Unionidae. This aquatic bivalve mollusk is native to the Cumberland and Tennessee River systems in the United States, where it has experienced a large population decline. It is a federally listed endangered species of the United States.
This species was historically one of the most common mussels in the Tennessee River. Now only old individuals can be found there. The species has been reduced to no more than 4 populations. It has been extirpated from the wild in the state of Alabama, but it has been reintroduced there. The only remaining reproducing populations occur in the Clinch and Powell Rivers. Reproducing populations remain in under 10% of the mussel’s historical range, and the populations are disjunct.
Factors contributing to its decline include the impoundment of waterways, increased silt, and pollution from sewage, coalThis species lives in clear, clean, fast-flowing water. It cannot tolerate water of poor quality, for example, water with silt.
| Status | Date Listed | Lead Region | Where Listed |
|---|---|---|---|
| Endangered | 06/14/1976 | Southeast Region (Region 4) | Wherever found; Except where listed as Experimental Populations |
| Experimental Population, Non-Essential | 10/15/2007 | Southeast Region (Region 4) | U.S.A. (TN - specified portions of the French Broad and Holston Rivers; see 17.85(b)(1)) |
| Experimental Population, Non-Essential | 06/14/2001 | Southeast Region (Region 4) | U.S.A. (AL;The free-flowing reach of the Tennessee R. from the base of Wilson Dam downstream to the backwaters of Pickwick Reservoir [about 12 RM (19 km)] and the lower 5 RM [8 km] of all tributaries to this reach in Colbert and Lauderdale Cos., see 17.85(a)) |
- Population location: Wherever found; Except where listed as Experimental PopulationsListing status: Endangered
- Population location: U.S.A. (TN - specified portions of the French Broad and Holston Rivers; see 17.85(b)(1))Listing status: Experimental Population, Non-Essential
- Population location: U.S.A. (AL;The free-flowing reach of the Tennessee R. from the base of Wilson Dam downstream to the backwaters of Pickwick Reservoir [about 12 RM (19 km)] and the lower 5 RM [8 km] of all tributaries to this reach in Colbert and Lauderdale Cos., see 17.85(a))Listing status: Experimental Population, Non-Essential
| 07/09/1984 | Dromedary Pearly Mussel | View Implementation Progress | Final |
| 07/09/1984 | Dromedary Pearly Mussel | View Implementation Progress | Final |
| 07/28/2006 | 71 FR 42871 42872 | Endangered and Threatened Wildlife and Plants; 5-Year Review of 19 Southeastern Species |
|
