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| Zebra mussel | ||||||||||||||||||
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 photo: Ron Offermans Zebra mussel | ||||||||||||||||||
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| Dreissena polymorpha |
The Zebra mussel (Dreissena polymorpha) is originally from South/East Russia. It has been spreading for a long time. In 1850 it was first discovered in the Netherlands.
The zebra mussel is causing a serious problem in North America. From its first discovery in American waters in 1988 it has spread to a large number of waterways disrupting the ecosystem, displacing the local unoinoida mussels, and damaging harbours, boats, power plants etc.