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Seasonal Abundances of Naked Amoebae in Biofilms on Shells of Zebra Mussels ( Dreissena polymorpha ) with Comparative Data from Rock Scrapings
Author(s) -
BISCHOFF PAUL J.,
WETMORE SCOTT
Publication year - 2009
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.2009.00415.x
Subject(s) - dreissena , zebra mussel , biology , abundance (ecology) , ecology , bivalvia , mollusca , zoology , fishery , mussel
. In North America, zebra mussels ( Dreissena polymorpha ) are notoriously known as invasive species. The abundance of naked amoebae sampled from the shells of zebra mussels was compared with abundances from rock scrapings at approximately monthly intervals for 1 year. The sites were 2 km apart along the same shoreline. No significant difference in abundance of naked amoebae ( F =1.44; P ≤0.270) was detected for the two sampling sites. The combined data showed a minimum density of naked amoebae in winter, followed by peaks in early spring. The percent encysted increased from a low of 1% in the summer to 80% in early winter.