Percolomonas (perk-o-low-moan-ass) is an excavate flagellate - in that it has a ventral groove or gutter that is used in feeding, and is usually classified with the heterolobosea. Four flagella insert at the head of the groove. They insert in parallel. Often found in slightly smelly (i.e. anoxic) habitats. 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).
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From the collection
Little Sippewissett salt marsh, Massachusetts, USA
|Description of Percolomonas cosmopolitus: Obovate cell, 6-10microns long, with a ventral groove arising subapically and extending half the length of the cell. Four flagella insert subapically: one approximately twice the length of the cell, extending behind the cell, used for adhesion to substratum: three shorter flagella lie within the groove and are used to creat a current of water from which suspended particles are extracted. Nucleus anterior, with globular nucleolus. |