Testate amoeba. "Daughter" from binary fission?

Charles Krebs · Post by **Charles Krebs** » Mon Nov 21, 2011 1:09 am

The first image shows two individuals "mouth-to-mouth". Testate amoeba usually reproduce via asexual binary fission. In the process, a "daughter" test is produced around a cytoplasmic bud that exits the original test during the process. I don't know if that is what we are seeing here, but this is the best image I've been able to get of a pair in such a configuration so far.

Olympus BHS, 20/0.70 S Plan Apo, DIC. Canon 50D. 23 image stack.

This second image shows the detail in a section of a test that is up near the coverslip (same species but a different specimen). The test opening is on the opposite side.
Olympus BHS, 60/1.40 S Plan Apo, DIC. Canon 50D. . (Converted to black and white.)

Cactusdave · Post by **Cactusdave** » Mon Nov 21, 2011 1:31 am

Love that first image Charles. The stack worked exceptionally well too, but I should expect that of course

.

arturoag75 · Post by **arturoag75** » Mon Nov 21, 2011 1:32 am

Very interesting subject and great pics!

best
arturo

RogelioMoreno · Post by **RogelioMoreno** » Mon Nov 21, 2011 1:36 am

Wow, super beautiful! First time I see a picture like the first one.

Rogelio

Mitch640 · Post by **Mitch640** » Mon Nov 21, 2011 5:40 am

Amazingly beautiful and informative images Charles. As fascinated by testate amoebas as I am, I find them delightful.

Jacek · Post by **Jacek** » Mon Nov 21, 2011 10:22 am

Beautifully

Jan l'Amie · Post by **Jan l'Amie** » Mon Nov 21, 2011 11:06 am

Great pictures Charles.

gjones · Post by **gjones** » Mon Nov 21, 2011 1:34 pm

Superb photomicrography!

Its amazing how these little ones can come up with the best housing!!!

Ferry · Post by **Ferry** » Wed Nov 23, 2011 3:12 pm

Charles,

These are excellent pictures!!! It's a fission of Netzelia tuberculata. You can see the tuberculate structures. The older name is Difflugia tuberculata, but Netzelia-species produces the elements itself, or modify collected mineral grains. You come very close to Electron Microscopy

I suppose you use incident light?

Ferry