Juga
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Juga is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Semisulcospiridae.
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.[1]
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.Script error: No such module "Unsubst".
Species
The following species and subspecies are recognized:
Subgenus Juga s.s.
- Juga hemphilli (J. Henderson, 1935)[2]
- Juga plicifera (I. Lea, 1838)[2]
- Juga silicula (Gould, 1847)[2]
Subgenus Calibasis
- Juga acutifilosa (Stearns, 1890)[2]
- Juga occata (Hinds, 1844)[2]
Subgenus Oreobasis
- Juga bulbosa (Gould, 1847)[2]
- Juga interioris (Goodrich, 1944)[2]
- Juga laurae (Goodrich, 1944)[2]
- Juga nigrina (I. Lea, 1856)[2]
subgenus ?
- Juga chacei (Henderson, 1935)[3]
- Juga newberryi (I. Lea, 1860)[3]
- Juga orickensis (Henderson, 1935)[3]
Ecology
Parasites of Juga spp. include the bacterium Neorickettsia risticii, which causes Potomac horse fever along with the associated trematode vector.[4] Juga species are also infected with the bacterium Neorickettsia helminthoeca and its associated fluke, Nanophyetus salmincola[5]
References
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- ↑ Strong, E. E., & Whelan, N. V. (2019). Assessing the diversity of western North American Juga (Semisulcospiridae, Gastropoda). Molecular Phylogenetics and Evolution, 136, 87-103.
- ↑ a b c d e f g h i j k l Script error: No such module "citation/CS1".
- ↑ a b c d NatureServe Explorer, accessed 19 November 2015.
- ↑ Script error: No such module "Citation/CS1"..
- ↑ Greiman, S. E., Kent, M. L., Betts, J., Cochell, D., Sigler, T., & Tkach, V. V. (2016). Nanophyetus salmincola, vector of the salmon poisoning disease agent Neorickettsia helminthoeca, harbors a second pathogenic Neorickettsia species. Veterinary parasitology, 229, 107-109.
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- Clarke, Arthur H. 1981. The freshwater mollusks of Canada. National Museums of Canada. 446 pp.
- List including species in Oregon: https://web.archive.org/web/20081008065745/http://oregonstate.edu/ornhic/data/2004/inverts.html