Comments received on the query in last month's issue

by Bill Ells, UK


Editor's note: In the January 1999 issue of Micscape, Bill Ells asked for help to identify an unusual protozoan he had found. Bill had a good response to his query and writes:


I have had some interesting e-mail on the unusual protozoa that appeared in 'Micscape'.  (Bill's drawing shown left).  All agree that it is a species of Ophrydium, a suggestion for the species is O. versatile. The genus is not in 'How to know the Protozoa' by Jahn, Bovee & Jahn. It is in the only other book I have on the subject 'Protozoa' by Albert Westphal. The figure here is very small I would not have been able to identify the genus. 

Ophrydium are normally colonial in a gelatinous matrix (shown below), mine I am told are in the telotroch (mobile or colonising stage) when individuals break away from the colony to set up new living quarters. I am also told that in 'Freshwater Invertebrates of the United States' by R.W. Pennak  "on page 84 in the section on Protozoa there is a drawing of a single Ophrydium that looks almost exactly as you drew it ."  Two  people recommended 'Free Living Freshwater Protozoa' by Prof.D.J.Patterson.

I am most grateful for the response I have had from around the world to this and other articles, it makes my little efforts worthwhile. Thanks, Bill Ells.

Comments to the author Bill Ells are welcomed.





Microscopy UK Front Page
Micscape Magazine
Article Library

Microscopy UK or their contributors.

Published in February 1999 Micscape Magazine.

Please report any Web problems or offer general comments to the Micscape Editor,
via the contact on current Micscape Index.

Micscape is the on-line monthly magazine of the Microscopy UK web
site at Microscopy-UK


© Ltd, Microscopy-UK, and all contributors 1995 onwards. All rights reserved. Main site is at with full mirror at