Rotifer Feeding.
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Uploaded by EDFWilliams on Jan 12, 2009
Rotifer Feeding. A cell is caught in the vortex created by the movement of the animals cilia.
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I was looking at one of these little guys last night and I haven't managed half as good a video as this. Fantastic! As far as I know my diaphragm doesn't actually move. That's something I'd better go and check on I think because this videa is now my benchmark ! If I can manage this sort of quality I'll be very happy!
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nice video.......i firstly saw watercurrent....nice thnx
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This is gonna give me nightmares...
jk :D Good video, neat to see rotifers. I'm gonna find some paramecium in the creek beside out house :D
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@EDFWilliams Could you explain the process a little more? Are you first centering the condenser, then decentering it? By about how much?
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OMG SPAZ BUBBLE seriously tho i like rotifers
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saw one in science class, microscopic vacuums basically
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@EDFWilliams Thanks for the reply .What do you mean by preparation? Rotifers can be rehydrated on a dry slide .They do that suspended animation thing.
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Davi Lindeman
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If you watch the video I posted a short while ago on Oblique Light you can follow the process from centred condenser aperture, to a position where the light cone passes outside the field of view. You will see a setting more or less the same as the one I used for the Rotifer video towards the end of the clip. It's really just trial and error, choose an offset that gives you the kind of image you want.
EDFWilliams 11 months ago
Did you use a fluid thickener to get it to slow down ?
dlindeman 1 year ago
@dlindeman No. This is a direct lake-water preparation about 400 - 500 micrometers thick. The Rotifers die quite soon after a preparation is made so the observations have to be done without too much hanging about.
EDFWilliams 1 year ago
wat are those little cells that the rotifer was eating?
darianf68 2 years ago
Many of the particles are bacteria.
EDFWilliams 2 years ago
Yes. I set up for Köhler -- then offset the condenser diaphragm (NA 1.4 Aplanatic).
EDFWilliams 3 years ago