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juga

{{Short description|Genus of gastropods}}

{{About|a genus of snails|the municipality in Finland|Juuka}}

{{Automatic taxobox

| image = Naturalis Biodiversity Center - RMNH.MOL.175163 - Juga nigrina (Lea, 1856) - Semisulcospiridae - Mollusc shell.jpeg

| image_caption = Shells at the Naturalis Biodiversity Center

| taxon = Juga

| authority = H. Adams & A. Adams, 1854Adams H. (1854). Gen. Rec. Moll. 1: 300.

}}

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.Strong, E. E., & Whelan, N. V. (2019). Assessing the diversity of western North American Juga (Semisulcospiridae, Gastropoda). Molecular Phylogenetics and Evolution, 136, 87-103.

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|date=November 2015}}

Species

The following species and subspecies are recognized:

Subgenus Juga s.s.

  • Juga hemphilli (J. Henderson, 1935){{cite book|last1=Burch|first1=J.B.|title=Freshwater Snails (Mollusca: Gastropoda) of North America|date=April 1982|publisher=Environmental Monitoring and Support Laboratory, Office of Research and Development, U.S. Environmental Protection Agency|location=Cincinnati, Ohio, USA|edition=1|url=http://nepis.epa.gov/Adobe/PDF/10004R98.PDF|page=294}}
  • Juga hemphilli dallesensis (J. Henderson, 1935)
  • Juga hemphilli maupinensis (J. Henderson, 1935)
  • Juga plicifera (I. Lea, 1838)
  • Juga silicula (Gould, 1847)

Subgenus Calibasis

Subgenus Oreobasis

subgenus ?

Ecology

Parasites of Juga spp. include the bacterium Neorickettsia risticii, which causes Potomac horse fever along with the associated trematode vector.{{Cite journal

| last1 = Reubel | first1 = G. H.

| last2 = Barlough | first2 = J. E.

| last3 = Madigan | first3 = J. E.

| title = Production and characterization of Ehrlichia risticii, the agent of Potomac horse fever, from snails (Pleuroceridae: Juga spp.) in aquarium culture and genetic comparison to equine strains

| journal = Journal of Clinical Microbiology

| volume = 36

| issue = 6

| pages = 1501–1511

| year = 1998

| pmid = 9620368

| pmc = 104868

}}. Juga species are also infected with the bacterium Neorickettsia helminthoeca and its associated fluke, Nanophyetus salmincolaGreiman, 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.

References

{{Reflist}}

{{More footnotes needed|date=June 2011}}

  • 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

External links

{{NCBI taxid|101422|Juga}}

{{Taxonbar|from=Q3169473}}

Category:Semisulcospiridae

Category:Gastropod genera