A new Arcella amoeba, frontal and profile

carlos.uruguay · Post by **carlos.uruguay** » Fri Jul 03, 2015 6:55 am

Again we see a small amoeba Arcella.
Arcella lives in a house with a circular door.
Extends its "arms" to move and search food.
It measured as only a 60um (0.06mm) in diameter.
It is probably Arcella hemisphaerica, A. intermedia,
A.gibbosa or A. rotundata,
very difficult to distinguish without more experience
We found it in the heavily polluted freshwater of the Rio de la Plata - Route 1 Km 151,500 Artilleros - Colonia - Uruguay - South America.
40X and 100X objectives
Polarized oblique ligh
Panasonic GH3 camera
Video link:
https://www.youtube.com/watch?v=cnzaVhRE6ro
Video preview:

Regards
carlos

Jacek · Post by **Jacek** » Fri Jul 03, 2015 10:09 am

Very nice

carlos.uruguay · Post by **carlos.uruguay** » Fri Jul 03, 2015 1:19 pm

Thank you very much Jacek

fpelectronica · Post by **fpelectronica** » Sat Jul 04, 2015 7:24 am

Very very nice

Ferry · Post by **Ferry** » Sat Jul 04, 2015 2:14 pm

I would guess Arcella hemisphaerica var. depressa.

carlos.uruguay · Post by **carlos.uruguay** » Sat Jul 04, 2015 2:38 pm

Thank you very much Ferry!

carlos.uruguay · Post by **carlos.uruguay** » Sat Jul 04, 2015 3:40 pm

Thanks friend Francisco