New Zealand Mud Snail (Potamopyrgus antipodarum)
Where did they come from?
- Originated in New Zealand
Where can they be found in South Dakota?
- The New Zealand Mud Snail has not been reported in South Dakota, but it is a species to watch out for since it has
infested some waters as close as Minnesota.
What do they look like?
- New Zealand Mud Snails grow to about 5mm in length and have brown or black cone-shaped shells that twirl to a point.
Why are New Zealand Mud Snails a problem?
- Reproduce quickly and mass in high densities.
- Consume algae and compete with other native invertebrates for food sources, which can cause problems throughout the
entire food chain.
How are New Zealand Mud Snails spread?
- New Zealand Mud Snails can be spread by any type of water users including both people and animals. It only takes one snail to produce an infestation. They can also survive for a long period of time out of water.
Check out
Aquatic Nuisance Species Prevention on ways to prevent
the spread of Aquatic Nuisance Species
New Zealand Mud Snails links
Link to Protect
You Waters info on New Zealand Mud Snails
USGS Fact sheet on New Zealand Mud
Snails
Pictures of New Zealand Mud Snails
United States New Zealand
Mud Snail Distribution Map
Click here to report New Zealand
Mud Snails
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Related Links
ANS Management in North America
What is
an Aquatic Nuisance Species?
Aquatic Nuisance Species
Prevention
SD ANS Watch List "The Terrible Ten"
SD Noxious Weed List
SD Invasive Species Laws and
Regulations
SD Cooperative Boat Wash
Program
SD Infested Waters List
South Dakota ANS
Management Plan
Report a New Aquatic Nuisance Species
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