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Actinosphaerium
portrait Dark Field

Actinosphaerium (act-in-o-sphere-ee-um) (=Echinosphaerium), one of the largest freshwater heliozoa, may measure up to 500 microns, often with outer layer being very vacuolated. Multiple nuclei and nucleating sites for the arms line at the interface between the inner and outer regions of cytoplasm. Yellowy zone in the centre is some food being digested - these heliozoa can consume small metazoa. Dark ground illumination.  This picture was taken by David Patterson and Aimlee Laderman of material collected from a freshwater Atantic white cedar swamp at Cumloden near Woods Hole in Massachusetts, USA in spring and summer, 2001. Image copyright: D. J. Patterson and Aimlee Ladermann, image used under license to MBL (micro*scope).

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Actinosphaerium

From the collection Cumloden, Massachusetts, USA

No description of Actinosphaerium available.
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    Actinosphaerium in this collection



    Actinosphaerium eichhornii

    portrait


    Actinosphaerium eichhornii

    nucleus & arm


    Actinosphaerium eichhornii

    nucleus & arm


    Actinosphaerium eichhornii

    Population

    Actinosphaerium in other collections



    Actinosphaerium eichhorni
    , from Protozoan biomonitors in China


    Actinosphaerium eichhornii
    , from Protsville


    Actinosphaerium
    , from Eutree - voucher materials


    Actinosphaerium eichhornii
    , from Protsville drawings of freshwater protists


    Actinosphaerium eichhornii
    , from Limnic and marine Protists of Northern Germany and the Alps


    Actinosphaerium eichhornii
    , from Limnic and marine Protists of Northern Germany and the Alps


    Actinosphaerium eichhornii
    , from Limnic and marine Protists of Northern Germany and the Alps


    Actinosphaerium eichhornii
    , from Limnic and marine Protists of Northern Germany and the Alps


    Actinosphaerium
    , from Audley Bottom


    Actinosphaerium
    , from Audley Bottom


    Actinosphaerium
    , from Freshwater and Terrestrial Microbes of Idaho (USA) and Elsewhere


    Actinosphaerium eichhornii
    , from Freshwater ponds of Konstanz (Germany)


    Actinosphaerium eichhornii
    , from Freshwater ponds of Konstanz (Germany)


    Actinosphaerium eichhornii
    , from Lake Toolik, Arctic Alaska