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    Survey of European Green Crabs and Asian Shore Crabs in Salem Sound

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    Title
    Survey of European Green Crabs and Asian Shore Crabs in Salem Sound
    Author
    Sahloul, Sami
    Almadani, Nadir
    Date
    May 2021
    Subject
    Asian Shore Crab
    Carcinus maenas
    Chandler Hovey Park
    European Green Crab
    Hemigrapsus sanguineus
    Pavilion Beach
    
    Metadata
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    URI
    http://hdl.handle.net/20.500.13013/1507
    Abstract
    The European green crab (Carcinus maenas) has been the dominant crab species in New England rocky intertidal zones since the late 1800’s, but since around 2000 they have begun to be outcompeted by a new invasive species, the Asian shore crab (Hemigrapsus sanguineus). ​ Rocky intertidal zones at Pavilion Beach in Ipswich, MA and Chandler Hovey Park in Marblehead, MA were surveyed for both species monthly at low tide from June 2019 through April 2021. Asian shore crabs made up 89% of all crabs surveyed compared to European green crabs (11%). Also, at both sites, the average carapace width of European green crabs was found to be larger than that of the Asian shore crabs collected. From this survey, it appears that Asian shore crabs are outcompeting European green crabs at these locations.
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    Young, Alan
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