Ludwigia hexapetala
Ludwigia hexapetala
(six petal water primrose)

Impact ID2629
Impact TypeHuman Health
Study TypeObservational
Study LocationField
Impact DescriptionDense mats of Ludwigia hexapelata inhibit the effective application of larvicides for mosquito control. In the Laguna de Santa Rosa sub-basin of California’s Russian River watershed, a record number of adult mosquitoes were trapped adjacent to dense patches of L. hexapetala, coinciding with the arrival of the West Nile Virus, a mosquito-vectored disease.
NotesLargely spurred by the threat of public health risk from mosquito-vectored West Nile Virus, a multi-million dollar effort was implemented over three years to manage L. hexapetala, using an integrated approach combining mechanical removal with glyphosate and trichlopyr herbicide applications
Great Lakes RegionNo
LocationCalifornia, US

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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/29/2022].

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