Pleurosigma

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75RR
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Pleurosigma

#1 Post by 75RR » Mon Mar 02, 2020 9:00 pm

Diatom would not sit still for a photo so videoed it instead

It is 200µm in length

Do note that the movement is from the diatom, I did not touch the stage during this clip.

Here is a link on telling Pleurosigma and Gyrosigma apart: https://diatoms.org/genera/pleurosigma/guide

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WhyMe
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Re: Pleurosigma

#2 Post by WhyMe » Tue Mar 03, 2020 12:05 am

Pretty darn cool!

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KurtM
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Re: Pleurosigma

#3 Post by KurtM » Tue Mar 03, 2020 1:14 am

Oh my. Now that was one seriously beautiful bit of photomicography (videomicography?)!
Cheers,
Kurt Maurer
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ImperatorRex
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Re: Pleurosigma

#4 Post by ImperatorRex » Tue Mar 03, 2020 5:32 am

Great video 75RR! Thanks for pointing to the differences Pleurosigma and Gyrosigma.

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75RR
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Re: Pleurosigma

#5 Post by 75RR » Tue Mar 03, 2020 6:04 am

Many thanks WhyMe, KurtM and ImperatorRex

Glad you liked it!
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

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KD Arvidsson
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Re: Pleurosigma

#6 Post by KD Arvidsson » Tue Mar 03, 2020 11:59 am

Very good 75RR! //KD
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75RR
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Re: Pleurosigma

#7 Post by 75RR » Tue Mar 03, 2020 12:11 pm

Thanks KD Arvidsson
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mintakax
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Re: Pleurosigma

#8 Post by mintakax » Wed Mar 04, 2020 7:38 pm

A beautiful diatom and so cool the way it "swam" across your FOV !

MichaelG.
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Re: Pleurosigma

#9 Post by MichaelG. » Thu Mar 05, 2020 11:42 am

75RR wrote:
Mon Mar 02, 2020 9:00 pm
Do note that the movement is from the diatom, I did not touch the stage during this clip.
How VERY obliging of it ... How do you train them ?

:roll: MichaelG.
Too many 'projects'

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75RR
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Re: Pleurosigma

#10 Post by 75RR » Thu Mar 05, 2020 11:50 am

MichaelG. wrote:
Thu Mar 05, 2020 11:42 am
How VERY obliging of it ... How do you train them ?

:roll: MichaelG.
Mini Kibbles ;)

I still think walking plants are mind boggling!
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MichaelG.
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Re: Pleurosigma

#11 Post by MichaelG. » Thu Mar 05, 2020 1:22 pm

75RR wrote:
Thu Mar 05, 2020 11:50 am
Mini Kibbles ;)
:D MichaelG.
.
.
There is, of course, a genuine question underlying the jest ...

Unless you were really enticing it with Kibbles:
Is there maybe a heat or light source to one side of the stage ?
... and if so, was it attracted-to or fleeing-from ?
Too many 'projects'

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75RR
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Re: Pleurosigma

#12 Post by 75RR » Thu Mar 05, 2020 1:37 pm

Is there maybe a heat or light source to one side of the stage ?
... and if so, was it attracted-to or fleeing-from ?
They tend to move in straight lines - so far in one direction and then retrace their steps.

Generally they avoid the light, so if they are still but not pinned down by the cover slip, they will start to move away after a few seconds.

To get them to cross the screen it helps to catch them underway, if you time it right they will get out of the light by traversing it rather than stopping and going into reverse.

Needless to say it took more than one attempt on my part.

They do say that one should never act/film with children and animals if one wishes to avoid vexation - one could add animalcules to the adage.
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MichaelG.
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Re: Pleurosigma

#13 Post by MichaelG. » Thu Mar 05, 2020 5:22 pm

Thanks for that

MichaelG.
Too many 'projects'

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