Flagellate colony for ID ?Uroglenopsis?

jc maccagno · Post by **jc maccagno** » Fri Jan 10, 2014 3:03 pm

Fresh water

carlos.uruguay · Post by **carlos.uruguay** » Fri Jan 10, 2014 5:04 pm

I don't distinguish well the image
It has a 'trunk' as Anthophysa?
http://cfb.unh.edu/phycokey/Choices/Chr ... _page.html
carlos

jc maccagno · Post by **jc maccagno** » Fri Jan 10, 2014 5:18 pm

Hello Carlos

This organism was free swimming and looked more like Synura except for the lack of color .

Thanks for your interest and the link

John

carlos.uruguay · Post by **carlos.uruguay** » Fri Jan 10, 2014 5:35 pm

Hi John.
Anthophysa is similar to Synura, but without color
Many times the colony detaches and rotates freely.
The members of the colony have 2 flagella (one shorter than the other)
and sometimes also emerge and swim freely
http://www.youtube.com/watch?v=14nB46yvlXI

Bruce Taylor · Post by **Bruce Taylor** » Sat Jan 11, 2014 12:21 pm

Looks to me like a colony of choanoflagellates...the peri-flagellar collars are visible on some of these little guys.

If so, they are opisthokonts, more closely related to you and me than they are to either Synura or Anthophysa, which are both stramenopiles (closer to Diatoms, Mallomonas, etc)! Our cousins, the sponges, have collared cells, too.

Consider genus Sphaeroeca.

carlos.uruguay · Post by **carlos.uruguay** » Sat Jan 11, 2014 8:59 pm

Absolutely!
Always right Bruce!

jc maccagno · Post by **jc maccagno** » Sun Jan 12, 2014 2:28 pm

Thanks Carlos and Bruce

Your assistance in ID is greatly appreciated

John

Flagellate colony for ID ?Uroglenopsis?

Flagellate colony for ID ?Uroglenopsis?

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colonial flagellate