Species: Potamopyrgus antipodarum
New Zealand Mudsnail
Species
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Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neotaenioglossa
Family
Hydrobiidae
Genus
Potamopyrgus
NatureServe
Classification
Informal Taxonomy
Animals, Invertebrates - Mollusks - Freshwater Snails
Formal Taxonomy
Animalia - Mollusca - Gastropoda - Neotaenioglossa - Hydrobiidae - Potamopyrgus
Ecology and Life History
Short General Description
a freshwater snail
Habitat Type Description
Freshwater
Migration
false - false - false - Well suited to passive dispersal by birds (Zaranko et al., 1997) and can pass through fish alimentary canal alive.
Non-migrant
false
Locally Migrant
false
Reproduction Comments
High reproductive capacity in that it is ovoviviparous or populations may be entirely parthenogenic. Only females noted in Lake Ontario (Zaranko et al., 1997). Annual life cycle and reaches sexual maturity at 3.5 mm and can produce an average of 230 juveniles per year.
Length
1.2
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
2005-04-01
Global Status Last Changed
2000-10-19
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=SE&CA.ON=SE&US.AZ=SE&US.CA=SE&US.ID=SE&US.MN=SE&US.MT=SE&US.NY=SE&US.OR=SE&US.UT=SE&US.WA=SE&US.WY=SE" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
H - >2,500,000 square km (greater than 1,000,000 square miles) - H - Native to New Zealand. Introduced to Europe in the 1800's where it is now widespread. Introduced into the Snake River system (Idaho) in North America (first appeared in 1987) and is now present in the Great Lakes and Madison and Missouri rivers (Howells 1999). Since spread to nearly a dozen sites in Lake Ontario (Zaranko et al., 1997). Kerans et al. (2005) list it from Idaho, Great Lakes, California, Wyoming, Montana. Recently introduced to Duluth-Superior Harbor in Duluth, Minnesota (MN DNR, 1 May 2006 news release).
Global Range Code
H
Global Range Description
>2,500,000 square km (greater than 1,000,000 square miles)