Copulating rotifera – Retraction & Correction

Images made through a microscope. All subject types.

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Copulating rotifera – Retraction & Correction

Post by Bernd »

Dear all:

Hereby I want to apologize for the complete misinterpretation of my microscopical observations resulting in the posting of „Copulating Rotifera“ from January 22nd, 2007. On the photos of this posting there is depicted neither a male Colurella rotifer nor a couple of copulating rotifers. The animal designated male is in fact also a female rotifer. This is clearly documented by the following pictures. The new pictures show a female carrying an egg (A) and femals with their vitellaria in different stages of development (B - E).


(e: egg, mx: mastax, vi: vitellarium, s: stomach).

Currently I have no idea why both animals shown on picture A of the previous posting swam around tightly attached to each other for about an hour. Also, I can not explain why the foot of one of the animals was inserted into the body of the other one.

I beg your pardon for posting quite a lot of rubbish.


Ken Ramos
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Post by Ken Ramos »

I would not go as far as to say that you had posted "rubbish" there Bernd. :-k Misinterpretations do happen from time to time and you put a lot of effort into these layouts, very nice and still yet informative work. :D

Thomas Ashcraft
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Joined: Mon Aug 07, 2006 5:56 am

Post by Thomas Ashcraft »


Excellent photos of an interesting event.

I think this forum is great for the co-operative science, sharing and correction of information, even when we self-correct.

It is especially interesting when there are scenes like your rotifers engaging in uncommon activities.

Thanks for posting.


Bruce Williams
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Location: Northamptonshire, England

Post by Bruce Williams »

Hi Bernd,

Setting aside any misinterpretation, the photos in both postings are excellent, considerably enhanced with your clear and helpful annotation. Your first set still pose an interesting question as to purpose behind their puzzling action :-k

...and my apology for getting your name wrong on your first posting :oops:


Site Admin
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Post by rjlittlefield »

Hereby I want to apologize for the complete misinterpretation of my microscopical observations resulting in the posting of „Copulating Rotifera“ from January 22nd, 2007.
A wise man once wrote that "It's better to make mistakes in front of your friends than your enemies". Well, I guess you already know that this forum is nothing if not friendly!

As others have written, the original pics were well done and informative. Misinterpretations happen. Often they are interesting and educational in their own right, especially when they're discussed afterward. Thanks for that!

It might be a nice touch to go back and lightly edit the original posting to add a brief comment and a link to this retraction topic. That way some kid who happens to Google search on "copulating rotifers" won't get stuck with information that looks solid but is now recognized to be wrong. (Yeah, I know, who ever would search for that phrase? But according to the logs for my personal website, a lot of people get to it via "mating slugs". Go figure.)

By the way, I see that your post count is low and you're fairly new to the forums. I'm glad to see you're sticking with us. I look forward to seeing a lot more of your very well done photos. :D

All the best!


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