Stentors?

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timurkhaz
Posts: 41
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Location: Saint-petersburg, Russia
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Stentors?

#1 Post by timurkhaz » Mon Oct 21, 2019 12:13 pm

Yesterday I got some water from a pond. Are these stentors?
Imageнн by Timur khaz, on Flickr
ImageMVI_4969 by Timur khaz, on Flickr
ImageMVI_4965 by Timur khaz, on Flickr

Bruce Taylor
Posts: 986
Joined: Fri Sep 04, 2015 11:34 am

Re: Stentors?

#2 Post by Bruce Taylor » Mon Oct 21, 2019 1:45 pm

First one is a rotifer (I'll leave it to someone else to figure out what kind!) :D

Second and third are Stentors. The third one has symbiotic algae, no cortical pigment granules and moniliform macronucleus, so is probably S. polymorphus. The second one doesn't unabmbiguously show the macronucleus, so identification to species isn't possible (from here, it looks like the mac is probably moniliform, i.e. "like a string of beads", but I'd prefer to see it more clearly).

Nice videos!

timurkhaz
Posts: 41
Joined: Sun Oct 13, 2019 8:23 pm
Location: Saint-petersburg, Russia
Contact:

Re: Stentors?

#3 Post by timurkhaz » Mon Oct 21, 2019 7:29 pm

Bruce Taylor wrote:
Mon Oct 21, 2019 1:45 pm
First one is a rotifer (I'll leave it to someone else to figure out what kind!) :D

Second and third are Stentors. The third one has symbiotic algae, no cortical pigment granules and moniliform macronucleus, so is probably S. polymorphus. The second one doesn't unabmbiguously show the macronucleus, so identification to species isn't possible (from here, it looks like the mac is probably moniliform, i.e. "like a string of beads", but I'd prefer to see it more clearly).

Nice videos!
Thank you for detailed information!!! :lol:

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