Search found 115 matches

by cuxlander
Sat Mar 28, 2020 6:21 pm
Forum: Identification help
Topic: Not an amoeba?
Replies: 8
Views: 1696

Re: Not an amoeba?

Hello, thanks to all.
It will remain a secret.
Hans
by cuxlander
Sat Mar 28, 2020 6:20 pm
Forum: Identification help
Topic: Not an amoeba?
Replies: 8
Views: 1696

Re: Not an amoeba?

Hello, thanks to all.
It will remain a secret.
Hans
by cuxlander
Fri Mar 13, 2020 6:34 pm
Forum: Identification help
Topic: Not an amoeba?
Replies: 8
Views: 1696

Re: Not an amoeba?

Thanks,

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

Hans
by cuxlander
Thu Mar 12, 2020 9:59 am
Forum: Identification help
Topic: Not an amoeba?
Replies: 8
Views: 1696

Not an amoeba?

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...
by cuxlander
Sat Feb 08, 2020 12:28 pm
Forum: Camera systems and imaging
Topic: Toupview (Lite) in Ubuntu linux
Replies: 2
Views: 1317

Re: Toupview (Lite) in Ubuntu linux

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
by cuxlander
Sat Feb 01, 2020 6:24 pm
Forum: Camera systems and imaging
Topic: Toupview (Lite) in Ubuntu linux
Replies: 2
Views: 1317

Toupview (Lite) in Ubuntu linux

Hello,
has anyone managed to run this software in Ubuntu?
I cannot load this program at all.
Thanks,
Hans
by cuxlander
Sat Jan 18, 2020 11:40 am
Forum: Pictures and Videos
Topic: Testate Amoeba - Difflugia pyriformis
Replies: 4
Views: 458

Re: Testate Amoeba - Difflugia pyriformis

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...
by cuxlander
Thu Jan 16, 2020 9:38 am
Forum: Pictures and Videos
Topic: Testate Amoeba - Difflugia pyriformis
Replies: 4
Views: 458

Re: Testate Amoeba - Difflugia pyriformis

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
by cuxlander
Wed Jan 15, 2020 6:18 pm
Forum: Identification help
Topic: Aecella, are these pseudopods
Replies: 2
Views: 1109

Re: Arcella, are these pseudopods

Hi Mike,
no, that's detritus or other rubbish.
The Arcella (conica?) is either encysted or empty.
Cheers,
Hans
by cuxlander
Thu Dec 19, 2019 11:49 am
Forum: Camera systems and imaging
Topic: Video Editing Software
Replies: 8
Views: 2837

Re: Video Editing Software

Hello,
also try Virtualdub at http://www.virtualdub.org/index
Its free and quite powerful, quite a learning curve though.
Hans
by cuxlander
Wed Nov 06, 2019 6:31 pm
Forum: Pictures and Videos
Topic: Collotheca Video
Replies: 3
Views: 738

Re: Collotheca Video

Thanks 75RR,
for the comments and for the hint about the "edit" function.
Hans
by cuxlander
Tue Nov 05, 2019 1:27 pm
Forum: Pictures and Videos
Topic: Collotheca Video
Replies: 3
Views: 738

Re: Collotheca Video

correction

No shirt, a short video
by cuxlander
Tue Nov 05, 2019 1:25 pm
Forum: Pictures and Videos
Topic: Collotheca Video
Replies: 3
Views: 738

Collotheca Video

Hello,

here's a shirt video of a collotheca rotifer:

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

Cheers,
Hans
by cuxlander
Mon Nov 04, 2019 11:33 am
Forum: Identification help
Topic: Seaweed help needed
Replies: 2
Views: 1589

Re: Seaweed help needed

Hi.
the second picture shows some colonial diatoms, don't know species.
Cheers,
Hans
by cuxlander
Sat Sep 07, 2019 3:48 pm
Forum: Identification help
Topic: testate amoebas ?
Replies: 8
Views: 2108

Re: testate amoebas ?

Hello 75RR,
first you need to train a worm ...
Can I borrow your worm?

Hans
by cuxlander
Sat Sep 07, 2019 1:20 pm
Forum: Identification help
Topic: testate amoebas ?
Replies: 8
Views: 2108

Re: testate amoebas ?

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...
by cuxlander
Tue Sep 03, 2019 5:00 pm
Forum: Identification help
Topic: testate amoebas ?
Replies: 8
Views: 2108

Re: testate amoebas ?

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
by cuxlander
Wed May 08, 2019 5:48 pm
Forum: Miscellaneous
Topic: Rotifers scavenge genes...
Replies: 6
Views: 5114

Re: Rotifers scavenge genes...

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
by cuxlander
Tue Apr 23, 2019 7:18 pm
Forum: Pictures and Videos
Topic: Nice Foraminifer from Egypt
Replies: 7
Views: 2411

Re: Nice Foraminifer from Egypt

Hello Michael, My imaging train is not sopisticated. Illumination is by a DYO-LED, my top lamp is an Ikea Sansjö . As you will probably know, the Zeiss KF2 has a fixed illumination and a basic diaphragm condensor, no koehlering. As cameraobjective the Amscope 14 mP CMOS Camera (MU1400) has got a Plö...
by cuxlander
Tue Apr 23, 2019 9:59 am
Forum: Identification help
Topic: Algae ID
Replies: 2
Views: 3656

Re: Algae ID

Cladophora ??

cheers,
Hans


PS Mougeotia is freshwater, the Baltic Sea is almost fresh in some areas.
by cuxlander
Tue Apr 23, 2019 9:48 am
Forum: Pictures and Videos
Topic: Nice Foraminifer from Egypt
Replies: 7
Views: 2411

Nice Foraminifer from Egypt

Hello, This pretty foraminifera came from Red Sea beach sand. 25x Neofluar transmitted and reflected light. About 300 µm wide. Stacked with Picolay from 38 frames: http://www.hans-rothauscher.de/testaceen/forum/foram_last.jpg You will probably also like this version of the photo, greyscale, negative...
by cuxlander
Sat Mar 09, 2019 1:11 pm
Forum: Pictures and Videos
Topic: More Foram Fun
Replies: 5
Views: 1365

Re: More Foram Fun

Hi Kurt,
I like them!
last year I already posted a few foram-photos, see
viewtopic.php?f=6&t=5818&sid=78292a1c74 ... 919dca8deb
Greetings,
Hans
by cuxlander
Thu Mar 07, 2019 10:42 am
Forum: Pictures and Videos
Topic: Foraminifer from Honduras
Replies: 5
Views: 1471

Re: Foraminifer from Honduras

Hi,
Tanks for your comments.

@75RR
What mounting medium did you use?
Just water.



Hans
by cuxlander
Thu Mar 07, 2019 10:13 am
Forum: Pictures and Videos
Topic: Foraminifer from Honduras
Replies: 5
Views: 1471

Foraminifer from Honduras

Hello, The sand on Roatan-beach did not contain many forams. This is a stack of a 400 µm large specimen, taken with 25x Neofluar, transmitted and reflected (Sansjö-Lamp) light. The original fotos where quite dull and required quite some contrast and sharpness enhancement, negative, grayscaled. http:...
by cuxlander
Wed Dec 19, 2018 7:55 pm
Forum: Beginner's corner
Topic: I was looking to get more out my microscope.
Replies: 9
Views: 2936

Re: I was looking to get more out my microscope.

@MicroBob, Also interesting: The Universiy of Hamburg entertains a big algae collection. Some desmidacaes have been collected 50 years ago and are grown and cared for since then. I have a rather old water sample from spring with demids (M. rotata and Netrium) still healthy and multiplying, although ...
by cuxlander
Wed Dec 19, 2018 7:48 pm
Forum: Identification help
Topic: Long ciliated
Replies: 2
Views: 1328

Re: Long ciliated

Hi jomaiz,
how long?
Hans
by cuxlander
Wed Dec 19, 2018 7:24 pm
Forum: Pictures and Videos
Topic: Identification of common things
Replies: 4
Views: 1278

Re: Identification of common things

Hi jomaiz, I do not know what the third one is, though I find them quite often. Plant seed or insect egg?? Still I like them, here are my impressions: http://www.hans-rothauscher.de/testaceen/forum/fruehstuecksei.jpg softboiled egg (empty) http://www.hans-rothauscher.de/testaceen/forum/smiley.jpg Sm...
by cuxlander
Sat Dec 01, 2018 10:59 am
Forum: Pictures and Videos
Topic: Amoeba (arcella?) 'walking'
Replies: 14
Views: 1984

Re: Amoeba (arcella?) 'walking'

Hi Aenima,
the first one is a Centropyxis most probably aculeata.
Second one ?? I wonder if phase contrast is the right method for this kind of object?
The last one??
Cheers,
Hans
by cuxlander
Sun Nov 25, 2018 6:35 pm
Forum: Pictures and Videos
Topic: Miscellaneous Photomicrographs
Replies: 13
Views: 1870

Re: Miscellaneous Photomicrographs

Hello RobBerdan,
impressive photos, although I love to see Volvox in its natural colours.
Cheers,
Hans
by cuxlander
Mon Nov 12, 2018 9:48 am
Forum: Pictures and Videos
Topic: Spiral shell?
Replies: 6
Views: 997

Re: Spiral shell?

@75RR
definitely a foram,
see my posting viewtopic.php?f=6&t=5818
Cheers,
Hans