| Rotundaria tuberculata | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Unionida |
| Family: | Unionidae |
| Genus: | Rotundaria |
| Species: | R. tuberculata |
| Binomial name | |
| Rotundaria tuberculata (Rafinesque, 1820) | |
| Synonyms | |
Cyclonaias tuberculata(Rafinesque, 1820) | |
Rotundaria tuberculata, commonly called the purple wartyback, is a freshwater mussel, an aquatic bivalve mollusk.
This species is native to eastern North America, generally in the Mississippi River drainage, where it is wide-ranging. It is still common in many areas, particularly in the southern part of its range, [2] but is being negatively impacted by water pollution and channelization. In the Mississippi River drainage, it is threatened by overgrowth of invasive zebra mussels (Dreissena polymorpha) [1] and, in Canada, by predation on juvenile mussels and possibly unsuccessful development of larval glochidia on the invasive round goby (Neogobius melanostomus). [2] [3]
It was formerly classified as the sole species in the genus Cyclonaias , but in 2012 it was moved to Rotundaria based on genetic evidence. [4]
