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Charles Krebs
Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA
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 Posted: Fri Sep 08, 2006 7:24 pm Post subject: Testate amoeba (Euglypha?) |
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I always seem to find the nice looking amoeba tests at the bottom of a wet mount, much too far away from the cover slip to allow me to use the 40X. So this is a crop from a shot made with a 20X. Not the greatest image, but a cool looking test.
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gpmatthews
Joined: 03 Aug 2006
Posts: 1034
Location: Horsham, W. Sussex, UK
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| Posted: Sat Sep 09, 2006 11:38 am Post subject: |
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Wow! - I've never seen one quite like that before. Wonderful image, as ever, Charlie.
_________________
Graham
Though we lean upon the same balustrade, the colours of the mountain are different. |
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Ken Ramos
Joined: 27 Jul 2006
Posts: 7076
Location: lat=35.4005&lon=-81.9841
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| Posted: Sat Sep 09, 2006 5:34 pm Post subject: |
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Charlie said:
| Quote: | | So this is a crop from a shot made with a 20X. Not the greatest image, but a cool looking test. |
Charlie you probably could have shot it with a magnifying glass and a vintage 1950's Kodak Brownie and it would still come out looking good.  Got to agree with Graham there, can't say as if I have seen one of these either. I have got to get back to spending more time at the scope. Thanks Charlie! |
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Charles Krebs
Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA
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| Posted: Sat Sep 09, 2006 11:00 pm Post subject: |
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Ken... | Quote: | | I have got to get back to spending more time at the scope. |
Yup. You and Wim and a few others.
Enough fooling around with those girly "close-up" shots, and time to start looking at some manly magnifications   |
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Wim van Egmond
Joined: 15 Aug 2006
Posts: 826
Location: Berkel en Rodenrijs, the Netherlands
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| Posted: Fri Sep 15, 2006 3:39 am Post subject: |
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Yes, yes, yes, I know that I have deserted from my true passion for a while but it is summer! I want to walk through the fields! And unfortunately I also have quite a lot of work at the moment. Shouldn't complain too much, just been to Brittany, France. Nice for tide pool photography!
And you seem to be able to fill the forum on your own, Charlie!
Wim |
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Charles Krebs
Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA
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| Posted: Fri Sep 15, 2006 9:53 am Post subject: |
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Wim... in the "old" group 39% of the topics were photomicrography, and now it is only 18% 
Just trying to maintain the status quo  |
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Wim van Egmond
Joined: 15 Aug 2006
Posts: 826
Location: Berkel en Rodenrijs, the Netherlands
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| Posted: Sat Sep 16, 2006 3:08 am Post subject: |
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I think this percentage will change in the winter!
But don't forget I had to wait for years until there was a Mac version of Helicon focus. I have finally the oportunity to play with it.
But I plan to do some microscopy in a short time!
Wim |
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bernhardinho
Joined: 13 Aug 2006
Posts: 563
Location: Germany
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| Posted: Sun Sep 17, 2006 11:25 am Post subject: |
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Hi Charles,
great image!! I think this is a Trinema enchelys.
Best wishes
Bernhard |
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rjlittlefield
Site Admin
Joined: 01 Aug 2006
Posts: 19541
Location: Richland, Washington State, USA
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| Posted: Sun Sep 17, 2006 12:26 pm Post subject: |
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| bernhardinho wrote: | | I think this is a Trinema enchelys. |
Hhmm... Charlie's image is vastly better than anything else I can find on the web, but I see a couple of differences I can't account for by image quality.
One difference is that Charlie's test has a symmetric opening bordered by prominent regular teeth, where all the images at http://protist.i.hosei.ac.jp/pdb/Images/Sarcodina/Trinema/enchelys/index.html show an asymmetric, almost "hooded" shape with a smooth margin at the opening.
The other difference is that Charlie's test has those six prominent spicules (is that the right term?), where I can't see anything like them in the other pictures.
Bear in mind, I'm essentially clueless about testate amoebae and I'm just responding to what I can see. But I'd sure be interested to hear people's thoughts.
--Rik |
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Charles Krebs
Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA
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| Posted: Sun Sep 17, 2006 12:55 pm Post subject: |
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Bernhard and Rik... I think it is Euglypha alveolata, based on Plate 35 at this site:
http://xmission.com/~psneeley/Personal/Leidy.htm
Steve Neeley recently put this together from the work of Joseph Leidy. It is a super site and a "must" to have bookmarked if this subject matter is of any interest. Thanks again Steve! |
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rjlittlefield
Site Admin
Joined: 01 Aug 2006
Posts: 19541
Location: Richland, Washington State, USA
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| Posted: Sun Sep 17, 2006 2:23 pm Post subject: |
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A good match indeed.
I find it intriguing that this excellent reference dates from 1879!
--Rik |
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