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Euglena spirogyra

 
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ralfwagner



Joined: 05 Aug 2006
Posts: 412
Location: Germany, Duesseldorf

PostPosted: Wed Oct 18, 2006 12:47 pm    Post subject: Euglena spirogyra Reply with quote

Hello,

during my last holidays in the Lechtal Alps I origionally wanted to investigate some Desmids, but I couldn't find some interesting ones. Instead I found a nice Euglena spirogyra:

The first picture shows E. spirogyra focussed on the middle-part. Typical are the lengthwise spiral circulating rows of protuberances on the pellicle. Furthermore there are two large rings of paramylon visible, one anterior and one posterior to the nucleus.



Objektive 100x/1.25 oil, oblique illumination (for a better presentation of the protuberances)

The second picture is focussed on the pellicle in order to emphasize the circulating rows of protuberances.



The nucleus is between the two paramylon-grains. It is hardly visible in the two pictures above, but much more better in the following video. The video demonstrates also, that E. spirogyra shows only slight metaboly and is of slow motion. Also the short flagellum sometimes is visible.

Link to the video: http://www.dr-ralf-wagner.de/Bilder/Euglena_spirogyra-Kanzlerberg-2-divx.avi

objektive 40x/0.65, oblique illumination, DIVX-AVI-format, ~ 3 MB


enjoy!
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Cyclops



Joined: 05 Aug 2006
Posts: 2968
Location: North East of England

PostPosted: Wed Oct 18, 2006 12:53 pm    Post subject: Reply with quote

Interesting little object, never seen one like that before!
Some interesting pictures (and videos) on your website too!
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Ken Ramos



Joined: 27 Jul 2006
Posts: 7052
Location: lat=35.4005&lon=-81.9841

PostPosted: Wed Oct 18, 2006 7:02 pm    Post subject: Reply with quote

Some geat photographs there Ralf. Very Happy Any idea what the function of those protuberances are on the pellical? Can't say I have ran across these before but there are so many organisms out there, it would probably take ones lifetime to see them all. Wink
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ralfwagner



Joined: 05 Aug 2006
Posts: 412
Location: Germany, Duesseldorf

PostPosted: Thu Oct 19, 2006 10:22 am    Post subject: Reply with quote

Ken,

I really do not know what the function of the protuberances is. But I assume, that they have no special function and are just a game of nature.
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Ralf

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beetleman



Joined: 04 Aug 2006
Posts: 3578
Location: Southern New Hampshire USA

PostPosted: Thu Oct 19, 2006 12:20 pm    Post subject: Reply with quote

Great Photos Ralf. Your two pictures show why it is called Euglena spirogyra. While I was looking for more info on this organism, I came across this site that has a SEM of the protuberances http://www.plantbiology.msu.edu/triemer/Euglena/ehrenberg_collection.htm Very interesting creature Wink
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