Didymo (Didymosphenia Geminata)
Where did it come from?
- Originates in Europe, Asia and parts of North America.
Where can it be found in South Dakota?
- Rapid Creek in Pennington County in the Black Hills
What does it look like?
- It is tan, light brown, and whitish that has clumps of ropy strands, a rough cottony feel and fiborous.
Why is Didymo a problem?
- It can form in large masses driving out food sources for other plants and animals. It has been a leading problem for
the decline of Brown Trout in Rapid Creek.
How is Didymo spread?
- Didymo can stick to anything(boats, fishing gear, and wading gear) it touches and be transported without the proper
removal.
Check out
Aquatic Nuisance Species Prevention on ways to prevent
the spread of Aquatic Nuisance Species
Didymo links
Digital
Frontier Fact Sheet on Didymo
Didymo Distribution Map (pdf
file)
Pictures of Didymo
South Dakota Didymo Distribution
Click here to report Didymo
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Related Links
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