Specimen Information

Potamopyrgus antipodarum
Potamopyrgus antipodarum
(New Zealand mudsnail)
Mollusks-Gastropods
Exotic

Specimen ID1932938
GroupMollusks-Gastropods
GenusPotamopyrgus
Speciesantipodarum
Common NameNew Zealand mudsnail
StateCA
CountyCalaveras
LocalityCalaveras River at Jenny Lind
Mapping AccuracyAccurate
HUC8 NameUpper Calaveras California
HUC8 Number18040011
HUC10 NameCalaveras River
HUC10 Number1804001103
HUC12 NameNorth Gulch-Calaveras River
HUC12 Number180400110306
Map
Collection Day14
Collection Month10
Collection Year2025
Year AccuracyActual
Potential Pathwaydispersed | hitch hiker
CommentsThese were identified as part of bioassessment samples done by the ABL (Aquatic Bioassessment Lab). There were over 400 specimens out of 600 subsampled when processing the sample. They are dominating the community at this site.
Record TypeNAS sighting report
VerifierDaniel Pickard (California State University, Chico)
Freshwater/MarineFreshwater
Number Collected400


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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/9/2026].

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