Nuclei of Vorticella

[Ken Ramos]

Not having a very goodtime at sectioning plant stems this afternoon and besides, I cut myself, I have resorted to something less demanding. If you are wondering why these are in black and white, you should really see them in color. The reason being that I used two dark blue filters, one clear, the other frosted. By using the blue filters, contrast is increased and like in other techniques, certain details are made more clearly than in others. By converting these images to black and white, I was able to manipulate the contrasts of the organelles to bring out the features I wanted. By the way there is also an 18mm stop employed here too for oblique lighting.



The process of reproduction nearing its completion, if you will look closely at the Vorticella facing downwards, you will notice that the ciliary band or ring is forming at the posterior of the lorica, where it joins the other organism at the stalk. This new Vorticella will soon break away from the stalk and become free-swimming and also a telotroch. The arrows in the inset denote the location of the nuclei. There are a few vauge representations of the endocytic vesicles to be seen also.



Here another image of a different Vorticella, the large dark spot being an Arcella. Notice at the lower side of the lorcia, the classic "C" shape of the nucleus, numerous endocytic vesicles are quite prominate here also above the nucleus.

[beetleman]

You know, I have seen Vorticella under my microscope before and I have never took the time to look for different parts. I will look at them in a different way because of your information Ken....A "C" shaped nucleus ....will have to look for that Sorry about the cut..hope it wasnt to bad

[Ken Ramos]

Doug said:

Sorry about the cut..hope it wasnt to bad

Naw, nothing a Band Aid couldn't handle. Thanks Doug!