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A few more Collotheca rotifer

 
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Charles Krebs



Joined: 01 Aug 2006
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Location: Issaquah, WA USA

PostPosted: Wed May 15, 2013 12:07 am    Post subject: A few more Collotheca rotifer Reply with quote






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discomorphella



Joined: 01 Oct 2006
Posts: 605
Location: NW USA

PostPosted: Wed May 15, 2013 12:15 am    Post subject: Reply with quote

Wow. Just wow. The first one is my favorite but they're all great. Where did you find them (under lilly pads? on rotten vegetation?)? I've got dozens of species of rotifers in my pond but I've only found an example of Collotheca once.

David
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Charles Krebs



Joined: 01 Aug 2006
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Location: Issaquah, WA USA

PostPosted: Wed May 15, 2013 1:36 am    Post subject: Reply with quote

David,

I am finding quite a few of these (along with Flocularia ringens) in a "new" location I've been sampling. They are readily found on fine grass blades (as can be seen in the first image) that grow at the waters edge.
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discomorphella



Joined: 01 Oct 2006
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PostPosted: Wed May 15, 2013 1:45 am    Post subject: Reply with quote

Hmmmm. Grass you say. So I have most probably been stepping on them as I wade out into my pond (past the grasses at the edge of course) to get what I thought was a better sample...

Thanks,

David
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Jacek



Joined: 02 Oct 2011
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Location: Poland

PostPosted: Wed May 15, 2013 12:39 pm    Post subject: Reply with quote

The first picture is perfect, beautiful
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albertr



Joined: 12 May 2013
Posts: 52
Location: PA, US

PostPosted: Wed May 15, 2013 1:17 pm    Post subject: Reply with quote

Amazing shots! What setup was used to produce these?

-albertr
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pwnell



Joined: 18 Dec 2009
Posts: 2003
Location: Tsawwassen, Canada

PostPosted: Wed May 15, 2013 1:31 pm    Post subject: Reply with quote

I love the detail you are getting in the cilia. Were you using flash to arrest the motion?
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RogelioMoreno



Joined: 20 Nov 2009
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Location: Panama

PostPosted: Thu May 16, 2013 5:10 am    Post subject: Reply with quote

Very nice, specially #1.

Rogelio
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Marek Mis



Joined: 10 Jul 2010
Posts: 2560
Location: Suwalki, Poland

PostPosted: Thu May 16, 2013 9:21 am    Post subject: Reply with quote

Beautiful images !

The first one is excellent. I very like photographying the microorganisms in their real habitat. These two rotifers are wonderful. You were lucky to find them together one by one.

Marek
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myriophyllum



Joined: 05 Sep 2007
Posts: 151
Location: Schaumburg, north of Germany

PostPosted: Thu May 16, 2013 12:05 pm    Post subject: Reply with quote

Hi Charles,

a great pleasure to look at these photos. :-)

Greetings

Jens
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Charles Krebs



Joined: 01 Aug 2006
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Location: Issaquah, WA USA

PostPosted: Fri May 17, 2013 5:48 pm    Post subject: Reply with quote

Thanks for the comments!

albertr,
Quote:
What setup was used to produce these?
These are with an Olympus BHS, with DIC. The objectives were 10X, 20X, and the last was 40X (S-Plan Apos).

Waldo,
Quote:
Were you using flash to arrest the motion?
I was using flash, but unlike so many rotifers where the cilia move rapidly in a metachronal manner, with these rotifers the cilia are very still. They don't move until some potential "food" brushes against them.
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