• Login
    View Item 
    •   DSpace Home
    • SUNY Brockport
    • Events/Conferences
    • Master's Level Graduate Research Conference
    • View Item
    •   DSpace Home
    • SUNY Brockport
    • Events/Conferences
    • Master's Level Graduate Research Conference
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDepartmentThis CollectionBy Issue DateAuthorsTitlesSubjectsDepartment

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Why Are Half of New York Finger Lakes Invaded by Cercopagis pengoi, While the Other Half Have Remained Non-invaded for Over a Decade?

    Thumbnail
    Date
    2013-04-20
    Author
    Figary, Stephanie
    Metadata
    Show full item record
    Abstract
    The fish-hook flea, Cercopagis pengoi, is an abundant invasive zooplankton that invaded six of the eleven New York Finger Lakes in 1999, one year after invading Lake Ontario. Cercopagis is predatory, which could alter trophic dynamics of invaded lakes since their food webs are dominated by herbivorous zooplankton. Additionally, Cercopagis is consumed by the region’s planktivorous fish (Alosa pseudoharengus), and may impact their trophic position if they shift from consuming the native herbivorous zooplankton to a diet including the invasive predatory zooplankton. The partial New York Finger Lakes invasion creates a natural experiment ideal for studying the impacts of Cercopagis in invaded lakes and the factors preventing establishment in the non-invaded lakes. This study compares ecosystem characteristics of invaded and non-invaded lakes, including physical parameters, productivity, zooplankton assemblages, and alewife characteristics. High predation from alewife likely prevents the establishment of Cercopagis in non-invaded lakes; these lakes have many characteristics indicative of high alewife densities including poorer alewife condition, and a larger proportion of small bodied to large bodied zooplankton. Other differences include invaded lakes containing significantly more predatory zooplankton and fewer Bosmina, a small herbivorous zooplankton that is likely a key prey item for Cercopagis. Despite the presence of more predatory invertebrates, analysis of alewife gut contents indicated that alewife from invaded and non-invaded lakes are likely feeding at a similar trophic position.
    Description
    Environmental Science Panel
    URI
    http://hdl.handle.net/1951/72268
    Collections
    • Master's Level Graduate Research Conference [446]

    SUNY Digital Repository Support
    DSpace software copyright © 2002-2023  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV
     

     


    SUNY Digital Repository Support
    DSpace software copyright © 2002-2023  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV