Amoeba

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JimT
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Amoeba

#1 Post by JimT » Wed Aug 12, 2015 1:46 am

Collected some new water from a local pond today. Lots of new organisms.

Here are two views of an amoeba about 220 X 50 um's (ID appreciated) that I have never seen before. There were quite a few in the samples I examined.

Images are with Canon 60D, dark field and UGF filter, and 20X obj.

Image

Image

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lorez
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Re: Amoeba

#2 Post by lorez » Wed Aug 12, 2015 1:56 am

I don't know what specific amoeba you have, but the photos are excellent and inspirational. Now I want a new camera and a new pond.

lorex

Rodney
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Re: Amoeba

#3 Post by Rodney » Wed Aug 12, 2015 2:50 am

Nice sharp images.

Rodney

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Seb28
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Re: Amoeba

#4 Post by Seb28 » Wed Aug 12, 2015 3:17 am

Nice finding,but its not amoeba it is a Dinoflagellate and more precisely Ceratium sp.
-Reichert Polyvar
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mrsonchus
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Re: Amoeba

#5 Post by mrsonchus » Wed Aug 12, 2015 3:30 am

Great and interesting images, what an elegant 'thing' it is. Love the DF. :)
John B

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75RR
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Re: Amoeba

#6 Post by 75RR » Wed Aug 12, 2015 10:14 am

Two very nice images + very nice catch.
Nice finding,but its not amoeba it is a Dinoflagellate and more precisely Ceratium sp.
Glad it has been identified, did not think it was an amoeba but had no idea what it was.

Found one on youtube that shows the flagellum it uses to move. (Hope that is ok JimT)
https://www.youtube.com/watch?v=uRg3BBB ... freload=10
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
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JimT
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Re: Amoeba

#7 Post by JimT » Wed Aug 12, 2015 2:33 pm

Thanks all. And thanks to Seb28 and 75RR for the ID. Definitely a Ceratium Furca.

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Cyclops
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Re: Amoeba

#8 Post by Cyclops » Wed Aug 12, 2015 2:57 pm

Wow very nice. And an unusual amoeba!

JimT
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Re: Amoeba

#9 Post by JimT » Wed Aug 12, 2015 5:32 pm

Thanks. As was pointed out it is a Ceratium Furca.

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Cyclops
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Re: Amoeba

#10 Post by Cyclops » Wed Aug 12, 2015 6:59 pm

I've still yet to find any amoeba!

billbillt
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Re: Amoeba

#11 Post by billbillt » Wed Aug 12, 2015 7:19 pm

Hi Jim,
You dark field surely works wonderful.... I know you have said, but could you remind me what equipment you use?...
Thanks!
BillT

JimT
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Re: Amoeba

#12 Post by JimT » Wed Aug 12, 2015 8:52 pm

Thanks.

Equipment is Amscope B120; a nocular that I upgraded with plan objectives and 20x and 60x objectives. Hardly ever use the 100x and although the scope comes with 25x eyepieces they are useless and not heavy enough to use as a paper weight :)

Made the dark field filters from black paper and clear plastic. For the 4x and 10x obj's. I lay the filter on the LED lamp. For the 20x I had to cut a larger size and it goes in the filter holder. Took a while to get the filter centered correctly but was worth the effort to have 20x dark field.

Thanks again and if you have any more questions let me know.

JimT

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gekko
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Re: Amoeba

#13 Post by gekko » Thu Aug 13, 2015 12:35 am

Excellent images! Very beautiful to look at, lovely colors, and nice and sharp. The details and color in the DF image are super. Only once did I happen to see some dinoflagellates (they were Peridinium, not as spectacular as these) but I couldn't get a good picture as they were zipping at enormous speeds. Thanks for the pictures.

JimT
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Re: Amoeba

#14 Post by JimT » Thu Aug 13, 2015 12:42 am

Thanks Gekko.

Actually the first sample of these were not moving at all and I thought they were debris in the pond water. Then in another sample one of them started moving slowly and turning. Looked like the moving one grew more legs which made me think it might be an amoeba.

Anyway, glad to have new organisms in my new pond sample :D

JimT

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