Symbiodinium (sim-buy-o-din-ee-um). Dinoflagellates which are usually encountered as endosymbionts of invertebrates. They can also be maintained in culture. They can produce gymnodinioid cells. There is an circumferential groove (the girdle or cingulum) which wraps around the cell, and a longitudinal groove which extends from the point of flagellar insertion towards the back of the cell. The circumferential flagellum and the trailing flagellum are evident. Plastids with chlorophylls a and c. Circular structure is a pyrenoid. These pictures are of the type isolate. Differential interference contrast. This picture was taken by David Patterson and Mark Farmer of material from freshwater sites in the vicinity of the University of Georgia in Athens, Georgia, USA) in April, 2001 and from collections of organisms maintained at the University. Image copyright: D. J. Patterson and Mark Farmer, image used under license to MBL (micro*scope).
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From the collection
Athens, Georgia, USA
|Description of Symbiodinium: Symbiodinioid dinoflagellates, coccoid endosymbionts in marine invertebrates and foraminifera; gymnodinioid thecate motile stage; chloroplasts present. |