MicrobeHunter.com Microscopy Forum

Hi,
thanks for all your kind comments.
Hans

Hello Forists, I just bought me a Zeiss Plan-Neofluar 63/125 Oil and would like to show two of my first oil-immersion-photos: 1. Arcella discoides 122 µm one focal plane: http://hans-rothauscher.de/testaceen/forum/discoides1.jpg 2. Arcella discoides 133 µm stack of two (discoides are nicely flat) fo...

Hello Bob,

microscope adapter

please tell us about this adapter.

Cheerrs,
Hans

Hello Forum,
What is this ?
Abt 110 µm big, not moving, digesting.



Cheers,
Hans

Hello, thanks for your comments. Views which SEMs cannot provide. Here's another example: http://hans-rothauscher.de/testaceen/pics/Pontigulasia%20elisa_94.jpg http://hans-rothauscher.de/testaceen/pics/pontigulasia_bruecke.jpg . Pontigulasia (= throat bridge) build internal bridges to prevent Rotife...

Hello Forum, usually you observe disc shaped testate amoebae like Arcella or Centropyxis sitting flat on your glass slide, like this Centropyxis discoides : http://hans-rothauscher.de/testaceen/pics/discoides2.png With some luck and glycerol I have been able to view the following two specimen from ...

Moin Bob, the Kreidesee (Chalk-Lake) is a rather deep and very clear lake in the Cuxhaven area. It is a sport-divers hotspot. Yes it is recent and I also frequently find live specimen. Their contents regularly obscures stacks. http://hans-rothauscher.de/testaceen/forum/campylo5.jpg Like with other d...

Hi, thanks for your comments! @ KurtM and 75RR: I am using concave slides. Turning specimens is, like 75RR described the method, "hit and miss". I touch the cover glass with a needle and/or slightly move it aside. Not much of a miracle. @Bob: I found them occasionally in the mud of the Kreidesee Hem...

Hello forum, this empty Campylodiscus reluctantly permitted me to turn it into various positions: http://www.hans-rothauscher.de/testaceen/forum/campylo1.png http://www.hans-rothauscher.de/testaceen/forum/campylo2.png http://www.hans-rothauscher.de/testaceen/forum/campylo3.png http://www.hans-rothau...

Hello,
I am using a makeshift LED with PWM dimming. Frequently I experienced strong banding.
Then I forgot to remove a POL-foil from the in-base illuminator. No more banding.
Does this make sense?
Cheers,
Hans

Hello,

yes an interesting property of Euglyphides.
They produce these scales in their golgi-apparatus and store them inside for the coming cell generation:



Cheers,
Hans

Hello 75RR,

yes lobster trap was my first impression, too, which this photograph shows even more clearly (glycerine and slight polarised light):




Still, the riddle remains!

Cheers,
Hans

Hello, thanks to all.
It will remain a secret.
Hans

Hello, thanks to all.
It will remain a secret.
Hans

Thanks,

@75RR Yes I'm sure the right direction. Problem is the size and regular shape of my specimen.

Hans

Hello, At first glance this 232 µm high specimen from bog water looks like a testate amoeba http://www.hans-rothauscher.de/testaceen/forum/unknown.jpg However, there are to my knowledge no testacea with a round circumference and a rather clear grainy surface with litte pimples around the fundus. The...

Thanks Essaouira,

I like the look-and-feel of Ubuntu. But as selection of software is so much limited and difficult to install I am happily back to Win10.

Greetings,
Hans

Hello,
has anyone managed to run this software in Ubuntu?
I cannot load this program at all.
Thanks,
Hans

Hello Chris, your specimen is about 120 µm high. Most pyriform difflugia are much bigger. One characteristic is the very regular bunch of "stones" around the aperture. Not typical for Zivkovicia/pontigulasia/, my first wild guess was probably wrong. As Ferry Siemensma wrote, "Identification [of Diff...

Hello Chris,
Scale bar 100 µm?
may be Zivkovicia spectabilis, look at 40-45 seconds for view into pseudostome.
compare https://www.arcella.nl/zivkovicia-spectabilis/
Cheers,
Hans

Hi Mike,
no, that's detritus or other rubbish.
The Arcella (conica?) is either encysted or empty.
Cheers,
Hans

Hello,
also try Virtualdub at http://www.virtualdub.org/index
Its free and quite powerful, quite a learning curve though.
Hans

Thanks 75RR,
for the comments and for the hint about the "edit" function.
Hans

correction

No shirt, a short video

Hello,

here's a shirt video of a collotheca rotifer:

[youtube]https://youtu.be/Z5ODaFgxOFM[/youtube]

Cheers,
Hans

Hi.
the second picture shows some colonial diatoms, don't know species.
Cheers,
Hans

Hello 75RR,

first you need to train a worm ...

Can I borrow your worm?

Hans

Hello Mintakax, As for side view, is there a procedure for obtaining this ? No procedure! One tries to turn the object by tipping on the cover glass or pushing the glass to a side. If you are lucky the object rotates a bit and lets you view it from another angle. Convex slides are helpful. Its 10% s...

Hello mintakax,

some guesses:
1. An Arcella, size and side view would have helped
2. Probably a Difflugia or a Pontigulasia
3. A filose Amoeba
4. No idea, probably no Amoeba
5. Probably another small Arcella
6. Probably another filose Amoeba or as 75RR guessed a Heliozoa.

Cheers,
Hans

Hello,

@norm

I found this guy in one of my overwatered plants the other day.

This is not a rotifer, probably Isotoma viridis.


Cheers,
Hans