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Vorticella

 
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gpmatthews



Joined: 03 Aug 2006
Posts: 1033
Location: Horsham, W. Sussex, UK

PostPosted: Thu Oct 12, 2006 2:46 pm    Post subject: Vorticella Reply with quote



Microscope: Zeiss Standard GFL
Objective: Leitz 40/0.7 NPL Fluotar ICT
Ocular: Olympus P15
Substage: Leitz ICT
DIC
Sample from Warnham Millpond 08-Oct-2006
Camera: Canon Powershot S50
ISO200, F5.0, Flash

This is a free-swimming individual, but as it did not appear to have basal cilia, I do not think it was a telotroch. The shape was exactly similar to the adult stalked form.

This individual spent a lot of time facing upwards and moving around in circles and this gave me an opportunity to try and get some plan view shots showing the cilia.
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Graham

Though we lean upon the same balustrade, the colours of the mountain are different.
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Ken Ramos



Joined: 27 Jul 2006
Posts: 7076
Location: lat=35.4005&lon=-81.9841

PostPosted: Thu Oct 12, 2006 5:26 pm    Post subject: Reply with quote

A fantastic photograph Graham. It appears, beside the rather large vacuole on the right, I am assuming, that there is a nucleus just to the left of it. Could that be so? Excellent work Very Happy
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bernhardinho



Joined: 13 Aug 2006
Posts: 560
Location: Germany

PostPosted: Fri Oct 13, 2006 3:13 am    Post subject: Reply with quote

Excellent work!!

There are a couple of non sessile peritrichs, so I think you're right there.

Ken; I think I can spot at least three macronuclei ( I hope this is good English Rolling Eyes)

Bernhard
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Ken Ramos



Joined: 27 Jul 2006
Posts: 7076
Location: lat=35.4005&lon=-81.9841

PostPosted: Fri Oct 13, 2006 3:27 am    Post subject: Reply with quote

Your english is fine Bernhard. I was thinking the same thing about the nuclei. Everytime I see a vorticella the nucleus is the first thing I look for, why I don't know. I suppose that it is just that it stands out so well in the lorica with its "C" shape and appears sky blue at low magnifications. I have always wondered how it would look from various angles and so that is probably why it is the first thing I look for.
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bernhardinho



Joined: 13 Aug 2006
Posts: 560
Location: Germany

PostPosted: Fri Oct 13, 2006 7:53 am    Post subject: Reply with quote

Sorry Ken,

you're right. I forgot that almost all peritrichs feature c-shaped or sausagelike macronuclei. So the big vacuole is the contractile one and the others (that I took for ma) are food vacuoles.


Bernhard
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