Chilomonas (kai-low-moan-ass), one of the two genera of cryptomonad flagellates which do not have chloroplasts. There are two flagella which insert into a groove which opens subapically (the dent near the front of the cell is where is opens). Special extrusomes (ejectisomes) form a little cluster around the flagellar pocket (the pocket can not be seen). Cytoplasm with large numbers of polysaccharide granules. This cell slightly distorted. 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 Chilomonas paramecium: Colourless cryptomonads, with stiff elongate-ovate body, 19 to 30 microns long. Two subequal flagella, shorter than the length of the body, insert in an anterior pocket which is surrounded by rows of extrusomes. Small extrusomes are also visible under the cell membrane. The nucleus is located posteriorly to the pocket. A contractile vacuole is located anteriorly and empties into the pocket. Cells contain refractile storage products and often two refractile Maupas' bodies. Cells rotate while swimming, and can also swim backwards. |