MicrobeHunter.com Microscopy Forum

Hi,

In my pond water sample I have so far only found rectangular diatoms, no "live" round ones, until I saw this yesterday. Does anyone have any pointers on diatom anatomy? They are unicellular, and it could be interesting to know more about it's internal parts.

40x Objective. 10x eyepiece, afocal Nexus 6P.

Worth looking through the Resources section, lots of stuff there:

viewtopic.php?f=15&t=171

Video is sign in ?

75RR wrote:Worth looking through the Resources section, lots of stuff there:

viewtopic.php?f=15&t=171

Video is sign in ?

Video fixed. Was set to private by accident. Thanks for the heads up in the resource section.

I only get a Sign In notice
https://youtu.be/yiBoiYKSWC0

Video fixed.

That looks like a Testate Amoeba

http://www.arcella.nl/overview-all

Nice, 75RR may be right: hard for me to guess at such magnification. If I may ask a question (not meant as criticism, but out of curiosity): why not a still image, since there is no movement? Thanks.

I think 75RR is correct that it is a testate amoeba. Still a good video and I thought I saw some movement as you zoomed in

gekko wrote:Nice, 75RR may be right: hard for me to guess at such magnification. If I may ask a question (not meant as criticism, but out of curiosity): why not a still image, since there is no movement? Thanks.

Criticism is great. Look at the topic. It's probably an amoeba, not a diatom. I totally new at this, and absorb all comments for learning
If you look carefully, It's moving around, slowly. Since it could not get it to stand still, I decided to go for a movie since I could get no stack.

glennbech wrote:

gekko wrote:Nice, 75RR may be right: hard for me to guess at such magnification. If I may ask a question (not meant as criticism, but out of curiosity): why not a still image, since there is no movement? Thanks.

Criticism is great. Look at the topic. It's probably an amoeba, not a diatom. I totally new at this, and absorb all comments for learning
If you look carefully, It's moving around, slowly. Since it could not get it to stand still, I decided to go for a movie since I could get no stack.

Thank you, glennbech: valid reasons for a video.

Hi. I removed the zoom from the video since it interfered with what seems to be some kind of internal contraction "12 o clock" of some sorts at around 9 seconds. Does anyone know what it is?

In order to see it better, I took the liberty to copy a single frame from your video and enlarge the image and increase the contrast, and my not-at-all-expert guess is still that this is probably amoeba, as 75RR and JimT have already said.