Juga
Genus of gastropods
From Wikipedia, the free encyclopedia
Juga is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Semisulcospiridae.
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| Juga | |
|---|---|
| |
| Shells at the Naturalis Biodiversity Center | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | incertae sedis |
| Family: | Semisulcospiridae |
| Genus: | Juga H. Adams & A. Adams, 1854[1] |
These snails are native to the rivers of the northwestern United States and adjacent British Columbia. Several species are endemic to isolated large springs in the American Great Basin.[2]
The most abundant and widespread species, Juga plicifera, attains a height of up to 35 mm. It is sculpted with fine spiral ridges and variably developed ribs that frequently disappear in parts of the shell made as the animal matures.[citation needed]
Species
The following species and subspecies are recognized:
Subgenus Juga s.s.
- Juga hemphilli (J. Henderson, 1935)[3]
- Juga plicifera (I. Lea, 1838)[3]
- Juga silicula (Gould, 1847)[3]
Subgenus Calibasis
Subgenus Oreobasis
- Juga bulbosa (Gould, 1847)[3]
- Juga interioris (Goodrich, 1944)[3]
- Juga laurae (Goodrich, 1944)[3]
- Juga nigrina (I. Lea, 1856)[3]
subgenus ?
Ecology
Parasites of Juga spp. include the bacterium Neorickettsia risticii, which causes Potomac horse fever along with the associated trematode vector.[5] Juga species are also infected with the bacterium Neorickettsia helminthoeca and its associated fluke, Nanophyetus salmincola[6]
