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Amobeae tests (fresh water)

Posted: Wed Oct 03, 2018 3:14 pm
by 75RR
1st image. Plan 40x/0.65, DIC, 105µm, 30 image stack in Photoshop
2nd image. Plan 40x/0.65, DIC, 95µm, 32 image stack in Photoshop
3rd image. Plan 40x/0.65, DIC, 95µm, 19 image stack in Photoshop
4th image. Plan 40x/0.65, DIC, 80µm, 14 image stack in Photoshop

This is from an orchid pot which is designed to always have water in its base.
As it is a rather pretty green I have been meaning to see what it held.
So far a few rotifers and lots of testate amoebae

Re: Amobeae tests (fresh water)

Posted: Wed Oct 03, 2018 3:56 pm
by charlie g
Crisp images..I love the combination of the green and brown colors, thank you. Charlie guevara

Re: Amobeae tests (fresh water)

Posted: Wed Oct 03, 2018 4:34 pm
by billbillt
Beautiful images!.... DIC shines through again... a shame it is too expensive for my budget... Thanks for sharing...

BillT

Re: Amobeae tests (fresh water)

Posted: Wed Oct 03, 2018 11:00 pm
by Aenima
awesome shots - nice shapes to them, and nice colourings :)
did any have the amoeba inside? i was lucky enough to find one with the amoeba still inside it the other night :P but i don't find many like that for some reason.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 5:14 am
by 75RR
Many thanks charlie g, charlie g and Aenima
did any have the amoeba inside?
None of these did but I will be keeping an eye out. It is always a treat when someone is home.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 6:52 am
by Grahame
Lovely images 75RR
I saw something similar to image 2 a few days ago, now I know what it was :)

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 9:05 am
by 75RR
Thanks Grahame

Have a look at this site: https://www.arcella.nl/overview-testate-amoebae

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 9:17 am
by Grahame
Cheers 75RR,
Yep that's a really neat site, but I hadn't seen that page before, really useful.
Courtesy of that page I've now added an id to yet another image of mine, I'd called it a poached egg now know it's Diplophrys.
This is also a nice amoeba site, there's overlap between them.
http://www.hans-rothauscher.de/testacee ... oeben.html
Hans Rothauscher is a member here.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 11:18 am
by coominya
Nice work, an orchid pot eh, I know where there are lots of pots with water festering in them, I must have a look.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 11:25 am
by 75RR
Hans Rothauscher is a member here.
Thought I recognized the microscope. Very nice site.
There is a link to the wonderful drawings of Joseph Leidy on his site. I actually downloaded them (the plates and the plate descriptions) and combined them into a pdf.
Found the quality of the drawings better than those at archive.org

This is the link: https://www.dropbox.com/s/rvpwmdn31gxjn ... -.pdf?dl=0

Note: No need to join dropbox to download anything.
Just scroll to the bottom of the 'invite page' and press on 'No thanks, continue to view'
Then press download on top right of the page.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 12:00 pm
by 75RR
Thanks coominya,
I know where there are lots of pots with water festering in them, I must have a look.
I am sure you will find lots of interesting things.
Just goes to show that the adage "where there is water there is life " is quite true.

Re: Amobeae tests (fresh water)

Posted: Thu Oct 04, 2018 8:18 pm
by Grahame
75RR
Thanks for the Leidy pdf
I saw those earlier this week and that was on my to do list.
An amazingly patient talented man.

Re: Amobeae tests (fresh water)

Posted: Fri Oct 05, 2018 9:58 am
by cuxlander
Hello 75RR,

I believe your amoebae belong to the genus Zonomyxa.
See also http://www.mikro-tuemplerforum.at/viewt ... 625&p=2064

Regards,
Hans

Re: Amobeae tests (fresh water)

Posted: Fri Oct 05, 2018 7:10 pm
by 75RR
Thanks for the potential ID cuxlander - does indeed seem similar

Re: Amobeae tests (fresh water)

Posted: Tue Oct 09, 2018 9:08 am
by cuxlander
Hello 75RR,
I believe your amoebae belong to the genus Zonomyxa.
I had based my guess on the countless small (< 1 µm) violet granules filling the cytoplasm.
There are two very similar Genera:
Amphizonella found in dryer moss.
Zonomyxa living in Sphagnum.
(see also http://www1.nencki.gov.pl/pdf/ap/ap911.pdf)
Cheers,
Hans

Re: Amobeae tests (fresh water)

Posted: Tue Oct 09, 2018 5:27 pm
by 75RR
Amphizonella found in dryer moss.
Zonomyxa living in Sphagnum.
Thanks for the link and the additional suspect :)
I am unable to tell what type of moss the orchids are potted in so both Genus remain possible candidates.