which amoebe is this?

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janvangastel · #1 Post by **janvangastel** » Fri Mar 29, 2019 5:20 pm

I found some amoebae in a pond sample. They all had the nucleus placed centrally. I have bene searching the internet for identification, but couldn't find it. Below an example.

: P1083367_small.jpg (156.86 KiB) Viewed 4465 times

Bruce Taylor · #2 Post by **Bruce Taylor** » Fri Mar 29, 2019 9:11 pm

It would be nice to see it with pseudopods extended. Mayorella viridis is possible (zoochlorellae, central nucleus with conspicuous nucleolus).

janvangastel · #3 Post by **janvangastel** » Sun Mar 31, 2019 6:20 am

Maybe this video shows enough information:

75RR · #4 Post by **75RR** » Sun Mar 31, 2019 5:00 pm

You seem to have quite a few dust spots in your images. Are they all in the camera sensor or elsewhere?

janvangastel · #5 Post by **janvangastel** » Sun Mar 31, 2019 5:20 pm

I only noticed with this water specimen, but that's also the last water I used. I will have to check.

janvangastel · #6 Post by **janvangastel** » Sun Mar 31, 2019 6:09 pm

OK, it was the sensor. I cleaned it. I had seen the spots, but thought it was in the specimen. Should have seen though that this couldn't be the case because they did not move with the stage. Didn't give it much attention because I was too busy chasing amoebae. Thanks for mentioning it.

Bruce Taylor · #7 Post by **Bruce Taylor** » Mon Apr 01, 2019 5:03 pm

Oh, I see....very fine pseudopods, and not at all like the locomotive form of Mayorella viridis...and I'm afraid I don't know anything about their floating form!

I hope somebody who knows more about amoebae will chime in.

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