Roadless Areas
Home/Species/ Big-eared Radix

Radix auricularia

(Linnaeus, 1758)

Big-eared Radix

G5Secure Found in 11 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Least concernIUCN
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.113646
Element CodeIMGASL4010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryInvertebrate Animal
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomAnimalia
PhylumMollusca
ClassGastropoda
OrderBasommatophora
FamilyLymnaeidae
GenusRadix
Synonyms
Lymnaea auricularia
Concept Reference
Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland. 526 pp.
Conservation Status
Review Date1999-09-14
Change Date1999-09-14
Threat ImpactLow
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
This is a truly globally distributed species occurring across all of Europe, Russia, in eastern Asia, southern China and northern French Indo-China, India, Afghanistan, Persia, and Iraq, the Gulf of Oman and Lower Mesopotamia, Egypt and Yeman and is introduced across North America (Hubendick, 1951).
Range Extent Comments
This is a truly globally distributed species occurring across all of Europe, Russia, in eastern Asia, southern China and northern French Indo-China, India, Afghanistan, Persia, and Iraq, the Gulf of Oman and Lower Mesopotamia, Egypt and Yeman and is introduced across North America (Hubendick, 1951).
Occurrences Comments
It has been documented in Alaska in the central interior (Baxter, 1987). It has been introduced to the Bow River drainage in Alberta (Lepitzki, 2001). Lysne and Pierce (2009) found it rare in Crystal Creek-Spring Creek (Wood River section only), Blaine Co., Idaho. Lysne and Clark (2009) found it in the Bruneau River (survey area from Snake River confluence upstream to Hot Creek- 41 km) in Idaho. Larson (2018) found 4 additional locations in Wyoming, three in Grand Teton National Park (Two Ocean Lake, Oxbow Lake, and Third Creek), and the fourth in the Big Laramie River near Jelm.
Ecology & Habitat
Other Nations (2)
CanadaNNA
ProvinceRankNative
OntarioSNANo
QuebecSNANo
AlbertaSNANo
British ColumbiaSNANo
United StatesNNA
ProvinceRankNative
UtahSNANo
GeorgiaSNANo
ArizonaSNANo
MassachusettsSNANo
PennsylvaniaSNANo
IdahoSNANo
AlaskaSNANo
New MexicoSNANo
WashingtonSNANo
CaliforniaSNANo
New JerseySNANo
MontanaSNANo
MichiganSNANo
ColoradoSNANo
OregonSNANo
OhioSNANo
WyomingSNANo
New YorkSNANo
IllinoisSNANo
VermontSNANo
VirginiaSNANo
KentuckySNANo
Roadless Areas (11)
New Mexico (1)
AreaForestAcres
PecosCarson National Forest13,436
Oregon (3)
AreaForestAcres
North PaulinaDeschutes National Forest19,670
Snake RiverWallowa-Whitman National Forest31,229
South PaulinaDeschutes National Forest9,074
Utah (7)
AreaForestAcres
418013Uinta National Forest14,643
418018Uinta National Forest11,218
418019Uinta National Forest6,854
Lava BedsDixie National Forest14,944
Little CreekFishlake National Forest11,479
Mahogany RangeWasatch-Cache National Forest11,409
Price RiverManti-Lasal National Forest24,349
References (10)
  1. Baxter, R. 1987. Mollusks of Alaska: a listing of all mollusks, freshwater, terrestrial, and marine reported from the State of Alaska, with locations of the species types, maximum sizes and marine depths inhabited. Shells and Sea Life, Bayside, California. 163 pp.
  2. Hubendick, B. 1951. Recent Lymnaeidae. Their variation, morphology, taxonomy, nomenclature, and distribution. Kunglica Svenska Vetenskapsakademiens Handlingar Series 4, 3(1): 1-223.
  3. Larson, M. D. 2018. Range expansion and parasitism in the nonnative snail <i>Radix auricularia</i>. Western North American Naturalist 78(1):112-116.
  4. Lepitzki, D.A.W. 2001. Gastropods: 2000 preliminary status ranks for Alberta. Unpublished report prepared for Alberta Sustainable Resource Development, Fish and Wildlife Division, Edmonton, Alberta. 126 pp.
  5. Lysne, S. 2009. A Guide to Southern Idaho's Freshwater Mollusks. U.S. Fish and Wildlife Service. 43 pp.
  6. Lysne, S.J. and R. Pierce. 2009. Mollusk survey of Crystal Creek-Spring Creek Ranches, Blaine County, Idaho, USA. Ellipsaria 11(1):20.
  7. Lysne, S.J. and W.H. Clark. 2009. Mollusc survey of the lower Bruneau River, Owyhee County, Idaho, U.S.A. American Malacological Bulletin 27:167-172.
  8. MolluscaBase eds. 2022. MolluscaBase. Accessed at https://www.molluscabase.org.
  9. Tronstad, L.M. and M. D. Andersen. 2018. Aquatic snails of the Snake and Green River Basins of Wyoming. Report prepared by the Wyoming Natural Diversity Database for the Wyoming Fish and Wildlife Department. 44 pp.
  10. Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland. 526 pp.