Photosynthetic organism ID

bromodomain · Post by **bromodomain** » Thu Apr 26, 2012 6:35 am

Plankton species from an eutrophic pond.

40/0.65 w/ green interference filter

Mitch640 · Post by **Mitch640** » Thu Apr 26, 2012 9:38 am

Nice image. Was he motile?

bromodomain · Post by **bromodomain** » Thu Apr 26, 2012 1:53 pm

Thanks.

It wasn't moving around. Could it be a clump of cyanobacteria wrapped in a slime capsule?

bromodomain · Post by **bromodomain** » Thu Apr 26, 2012 1:56 pm

I forgot to mention I used oblique illumination which gives the slight differential contrast. Oblique and green interference filters seem quite compatible. And this was done with a "broken" lens. Its the 40x lens with the best contrast but it lacks a barrel so I had to prepare a makeshift one.

uaalgae · Post by **uaalgae** » Thu May 10, 2012 3:19 pm

I think there are two colonies of the genus Chroococcus and there are many species.