Brachonella (brack-on-ella), a heterotrich ciliate, with an adoral zone of membranelles (not well imaged here) and normal cilia on the body. The anterior end of cell is twisted. Distinguished from Metopus by its spiralling adoral zone of membranelles as opposed to the obliquely oriented but not spiralling AZM of Metopus.These cells mostly found in anoxic sites. Phase contrast.
This picture was taken by David Patterson and Aimlee Laderman of material collected from a freshwater Atantic white cedar swamp at Cumloden near Woods Hole in Massachusetts, USA in spring and summer, 2001. Image copyright: D. J. Patterson and Aimlee Ladermann, image used under license to MBL (micro*scope).
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From the collection
Cumloden, Massachusetts, USA
|Description of Brachonella: Metopid ciliate, somatic kineties, especially at anterior left, curved; serial left oral polykinetids make almost complete spiral around body; cytostome in posterior half. |