New Zealand Mud Snail

Scientific name: Potamopyrgus antipodarum (J. E. Gray, 1853)

Synonyms: Hydrobia jenkinsi (Smith E. A., 1884), Potamopyrgus jenkinsi (Smith, 1889)

Common name: New Zealand mud snail, Jenkin's spire shell

Native To: New Zealand (Benson et al. 2012)

Date of U.S. Introduction: First discovered in Idaho in 1987 (Benson et al. 2012)

Images: Invasive.org and Google

Video: New Zealand Mudsnail PSA (or click Play button below)

Means of Introduction: Unknown; possibly through ballast water or game fish imports (Zaranko et al. 1997; Benson et al. 2012)

Impact: Unknown; may displace and compete with native invertebrates (Benson et al. 2012)

Current U.S. Distribution:

• Current New Zealand Mudsnail Sightings Distribution (updated daily)
• NAS Database map
• Maps (Southwest region)

Management Plans: Aquatic Species / New Zealand Mudsnail

Selected Internet Resources:

• Federal Government
• State Government
• University/Academic
• International
• Organizations

Federal Government

Potamopyrgus antipodarum
Integrated Taxonomic Information System.
Taxonomy

New Zealand Mudsnail
Aquatic Nuisance Species Task Force.
Identification/Description; Photographs; Impacts; Controls

Harmful Aquatic Hitchhikers: Mollusks: New Zealand Mud Snail
Protect Your Waters and Stop Aquatic Hitchhikers!
Photographs; Impacts; Distribution; Dispersion

New Zealand Mudsnail - Potamopyrgus antipodarum (PDF | 388 KB)
DOD. USACE. Engineer Research and Development Center. Environmental Laboratory.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls; Special Note: Bibliography

Potamopyrgus antipodarum Article Citation Search - AGRICOLA Database
USDA. National Agricultural Library.
Research

New Zealand Mud Snail, Baseline Distribution and Monitoring Study
DOI. NPS. Yellowstone National Park.
Photographs; Impacts

Nonindigenous Species Information Bulletin: New Zealand mudsnail (2002; PDF | 212 KB)
DOI. USGS. Florida Caribbean Science Center.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls

Potamopyrgus antipodarum - Nonindigenous Aquatic Species Database
DOI. USGS. Southeast Ecological Science Center.
Identification/Description; Photographs; Introduction History; Impacts; Distribution; Special Note: Distribution maps and collection information (State and County)

New Zealand Mudsnail (Potamopyrgus antipodarum)
EPA. Pacific Northwest Region.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Distribution; Dispersion; Controls; Special Note: Contact Information

State Government

Non-Native Invasive Species: New Zealand Mudsnail
California Department of Fish and Game.
Photographs; Controls

Aquatic Hitchhikers: New Zealand Mudsnail
Colorado Division of Wildlife.
Identification/Description; Photographs; Introduction History; Controls

Mud Snail Closures on Boulder Creek
City of Boulder. Colorado.
Identification/Description; Photographs; Introduction History

Aquatic Invasive Species: New Zealand Mudsnail (PDF | 122 KB)
Indiana Department of Natural Resources.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Distribution; Dispersion; Controls

New Zealand mudsnail (Potamopyrgus antipodarum)
Kansas Department of Wildlife and Parks.
Identification/Description; Photographs; Introduction History; Distribution; Dispersion; Controls

New Zealand Mudsnail (Potamopyrgus antipodarum)
Minnesota Department of Natural Resources.
Photographs; Impacts; Distribution; Controls; Legal Aspects

New Zealand Mudsnail - Potamopyrgus antipodarum
Montana Natural Heritage Program and Montana Fish, Wildlife, and Parks. Montana Field Guide.
Taxonomy; Identification/Description; Photographs; Introduction History; Habitat

Potamopyrgus antipodarum
Washington Department of Fish and Wildlife.
Identification/Description; Photographs; Introduction History; Life Cycle; Distribution; Controls

New Zealand Mudsnails
University of California. Division of Agricultural and Natural Resources. Cooperative Extension.
Identification/Description; Photographs; Introduction History; Impacts; Distribution

New Zealand Mud Snail, Potamopyrgus antipodarum
University of California - Riverside. Center for Invasive Species Research.
Identification/Description; Photographs; Introduction History; Impacts; Distribution

New Zealand Mud Snail in the Southwestern United States
University of California - Santa Barbara. Marine Science Institute. Riparian Invasions Research Laboratory.
Identification/Description; Photographs; Introduction History; Impacts; Distribution; Controls; Research; Special Note: Bibliography; Report a Sighting

Potamopyrgus spp. - National Aquatic Nuisance Species Clearinghouse
New York Sea Grant; Cornell University; DOC. National Oceanic and Atmospheric Administration; State University of New York.
Research; Special Note: Includes information products for sale and bibliographies

New Zealand Mudsnails: How to Prevent the Spread of New Zealand Mudsnails through Field Gear (2010; PDF | 912 KB)
Oregon Sea Grant.
Identification/Description; Photographs; Introduction History; Distribution; Dispersion; Controls; Special Note: Contacts

New Zealand Mudsnail - Potamopyrgus antipodarum
Portland State University. Center for Lakes and Reservoirs.
Photographs; Introduction History; Life Cycle; Distribution; Controls

International

Potamopyrgus antipodarum
Joint Nature Conservation Committee (United Kingdom).
Taxonomy; Introduction History; Distribution

Potamopyrgus antipodarum (mollusc) - ISSG Global Invasive Species Database
World Conservation Union. Invasive Species Specialist Group.
Taxonomy; Identification/Description; Impacts; Life Cycle; Habitat; Distribution; Controls

New Zealand mud snail
Guide to Invasive Species of the Galveston Bay Area.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls

Species: New Zealand Mudsnail (Potamopyrgus antipodarum)
Pacific States Marine Fisheries Commission. Aquatic Nuisance Species.
Identification/Description; Photographs; Impacts; Distribution; Dispersion; Legal Aspects; Special Note: Bibliography

New Zealand Mudsnails Threaten Native Wildlife - Mudsnails.com
Santa Monica Bay Restoration Commission.
Identification/Description; Photographs; Impacts; Habitat; Distribution; Controls

Citations

Benson, A.J., R.M. Kipp, J. Larson, and A. Fusaro. 2012. Potamopyrgus antipodarum. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.

Zaranko, D.T., D.G. Farara, and F.G. Thompson. 1997. Another exotic mollusc in the Laurentian Great Lakes: the New Zealand native Potamopyrgus antipodarum (Gray 1843) (Gastropoda, Hydrobiidae) Canadian Journal of Fisheries and Aquatic Sciences 54(4):809-814.