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Pyrocystis fusiformis

 
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leonardturner



Joined: 14 Mar 2013
Posts: 304
Location: Atlanta, GA, USA

PostPosted: Thu Apr 27, 2017 4:06 am    Post subject: Pyrocystis fusiformis Reply with quote




Although this organism has been described as non-motile, the young do have flagella which they apparently lose during their short life cycles. It would be reasonable then to expect some differential mobility, and I think that is what we are seeing here. This flash-illuminated stack of 73 images of Pyrocystis in a well slide show some as quite static, and others with a variety of of movements (as might be expected from an organism with eccentrically mounted "propulsion units.") Mitty 5X, Raynox, Nikon 810

Leonard Turner
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GaryB



Joined: 29 Jul 2016
Posts: 373

PostPosted: Thu Apr 27, 2017 3:27 pm    Post subject: Reply with quote

That's a very interesting shot. I love the strobe effect of the motile ones.

Thanks for the upload Very Happy
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leonardturner



Joined: 14 Mar 2013
Posts: 304
Location: Atlanta, GA, USA

PostPosted: Fri Apr 28, 2017 4:30 am    Post subject: Reply with quote

Thanks, Gary. I must say I had no preconception of the results of this stack; one of the many pleasures of this game is getting to see things that you otherwise wouldn't, and the sometimes surprising outcomes. I have an ongoing culture of these organisms, and have examined a good many of them but have yet to recognize a flagellum. They are described as lying in two different planes, so I would suspect a variety of types of movement are possible.
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