Dreissena polymorpha
Dreissena polymorpha
(zebra mussel)

Impact ID2686
Impact TypeCompetition
Study TypeExperimental
Study LocationN/A
Impact DescriptionPredictive models showed unionid mortality (reflected by the proportion of dead unionids) was strongly correlated with Dreissena field density at densities above 1000/m2. Models predicted that severe unionid mortality (>90%) occured when Dreissena density and mean infestation intensity reach 6000/m2 and 100 dreissenids/unionid. Extirpation of unionid populations will occur within 4-5 years after Dreissena establishment at these densities.
Great Lakes RegionNo

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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/18/2024].

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