Pandorina: algae colonies

[Ichthyophthirius]

Hi,

Some photos of green algae, which I all believe to be Pandorina (all from the same pond sample; not sure if they are all of the same species). So I arranged them according to their life cycle:

Founder morulae - inversion - large colonies - breakup.








(slightly squashed)





Image width is the same in all photos: 180 um.

PZO DIC MPl 3; Leitz NPL Fluotar 40/0.70; Projective 4x; 125 mm objective; Canon EOS 500D

[pwnell]

Very informative! I have seen #5 often, the other forms not so much.

[carlos.uruguay]

Very very very nice!!!

[ralfwagner]

Very interesting series and detailed shots. Seems to be P. morum.

[Jacek]

I see that you are using DIC PZO. On what the microscope?
For me the best deal of Nikon lenses.
For me NPL Leitz 40 / 0.7 did not work well.
In you is very good.
Great series

[Ichthyophthirius]

Thanks guys! Thanks for the determination, Ralf.

Jarek, It's a PZO Biolar with some modifications, I'm still working on it. There were a few different versions of the 40/0.7 (same label, different construction), maybe that's also the reason. I also remove uneven background in Photoshop. I suppose you know that already, this is what I do:

Take image.
Take an image of an empty part of the slide (same layer, same exposure).
Substract the empty frame from the image.
- Photoshop: Image - Apply image - Substract, Offset 120
This removes uneven background and sensor dust.

Regards, Ichthy

[RogelioMoreno]

Nice set, my favorite is #5

Rogelio

[Olympusman]

Fabulous detail on the mucilage.

[vasselle]

Hello
Superbes photos

[piermicro]

Vrey well.