I should probably know this one, but I have a tough time being certain with some of these smaller ciliates. One "culture" I have is loaded with them! The average specimen seems to be about 15x25 microns in size. I've included a second composite image of individuals that show an interesting "mouth" structure, and in one case, three prominent caudal cilia.
The top shot shows them up against a Volvox. I "discovered" that if I oil my phase contrast condenser to the slide, and rotate it to the dark-field position I can get a very nice "circular oblique" lighting with my 100X by carefully closing the aperture built into the objective. I can't believe I have never tried this before today! I really like the way it looks.
The second image shows 4 individuals taken with conventional brightfield (maybe slightly oblique).
Hopefully there's enough here for you eagle-eyes to tell me what the are
100X objective, 2.5X photo-eyepiece. Canon 350D. Electronic flash.
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Moderators: MacroMike, nzmacro, Ken Ramos, twebster, S. Alden
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Browsed through Jahns and came up with what may possibly be Cinetochilum margaritaceum, 15-45um.
Some very excellent and detailed images, as usual Charlie.Oval body, oblique truncate at rear. Buccal cavity in posterior half of body, with undulating membranes on both sides of mouth cavity. 3-4 long caudal cilia. Family Cinetochilidae.(Jahns, Phylum Ciliophora pg. 243, fig. 435)
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Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.
Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.
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- Posts: 1200
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Ken... you might have it! Thanks.
This looks very close:
http://microscope.mbl.edu/scripts/micro ... geID=11953
This looks very close:
http://microscope.mbl.edu/scripts/micro ... geID=11953
Sometimes drawings are more detailed than the actual photographs seen on these sites, with your being an exception Charlie. I have often wondered at some of these websites though. I look at their images and then compare them to those seen here in our forums and we without a doubt have some of the best microphotographers to be found on the web.
Site Admin.
Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.
Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.