Carpediemonas (car-ped-ee-o-moan-ass), an excavate flagellate - in that there is a ventral groove that is used in feeding. Two flagella insert at the head of the groove. One lies within the groove and beats rapidly, the other extends forward and usually curves back over the anterior end of the cell as in this image. Phase contrast This picture was taken by David Patterson, Linda Amaral Zettler and Virginia Edgcomb of material from the salt marsh at Little Sippewissett (Massachusetts, USA) in Autumn, 2000 and in Spring and summer, 2001. Image copyright: D. J. Patterson, L. Amaral-Zettler and V. Edgcomb, image used under license to MBL (micro*scope).
download as pdf file
download large file
From the collection
Little Sippewissett salt marsh, Massachusetts, USA
|Description of Carpediemonas membranifera: Cells are elliptical or obovate and 3 to 6 microns long with a longitudinal ventral groove, which extends most of cell length. When squashed, the cell is pliable. Two flagella unequal in length emerge from the anterior distal part of the cell; the anterior flagellum bent over backwards is as long as the cell and beats stiffly. The acronematic posterior flagellum is about 2.5 - 4 times cell length, beats actively in the ventral depression and usually lies in the depression. The cells usually move by skidding with the anterior flagellum beating with a stiff paddling motion. The cells consume bacteria. |