Effects of spatial and temporal changes in water velocity on the density of the freshwater snail Potamopyrgus antipodarum (Gray)

B.J. Kefford, P.S. Lake

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    Abstract

    The effects of spatial and temporal changes in water velocity on the introduced freshwater snail Potamopyrgus autipodarum (Gray) (Gastropoda: Hydrobiidae) were studied in an artificial stream and in Main Creek, Victoria, Australia. The water velocity at which P. antipodarum became dislodged in the artificial stream was in agreement with their distribution in Main Creek. In Main Creek the density of P. antipodarum on a standard subs trate (half bricks) was negatively correlated with water velocity. However, no evidence was found that increases in water velocity associated with floods affect the densities of P. antipodarum.
    Original languageUndefined
    Pages (from-to)11-16
    Number of pages6
    JournalMolluscan Research
    Volume20
    Issue number1
    DOIs
    Publication statusPublished - 1999

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