Arachnula (a-rack-new-la), an amoeboid protist which may develop into very extensive organisms with many nuclei. This image of the cytoplasm shows a large food vacuole, many fine granular inclusions, a number of clear vacuoles and a number of nuclei (with the darker nucleolus inside). Phase contrast. This picture was taken by David Patterson, Linda Amaral Zettler, Mike Peglar and Tom Nerad from cultures and other materials maintained at the American Type Culture Collection during 2001. Image copyright: D. J. Patterson, L Amaral-Zettler, M. Peglar and T. Nerad, image used under license to MBL (micro*scope).
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From the collection
American Type Culture Collection
|Description of Arachnula: Typically multinucleate, branching organism, size ranges from 50 µm linear dimension to organisms covering several square millimetres, typically found in soils where it may penetrate fungal mycelia and spores by cutting a hole in the wall and consume cytoplasm. May ingest other protists. Usually colourless but may have light pink or orange colour. Cysts usually produced after feeding. Reported from Europe and Gondwanaland. |