This creature is from a sample of pond scum I took last week from the shoreline of a small lake in Eagan, Minnesota. I apologize for not getting a clearer image; he was constantly moving and it was rather difficult to keep up. I think he may have had a pair of "eyes" on his head, but I'm not completely sure of that (not visible in this photo of course). This photo was taken at 200x magnification using bright field lighting. He was found at the top of the sample jar (a one-quart mason jar if that makes any difference).
If anyone has any idea what this might be I'd greatly appreciate any suggestions. I've not ever seen one of these before. Thanks!
Re: A rather strange beastie I discovered last night
Posted: Tue May 02, 2017 11:48 am
by Bruce Taylor
It's a gastrotrich.
Re: A rather strange beastie I discovered last night
Re: A rather strange beastie I discovered last night
Posted: Wed May 03, 2017 4:27 pm
by Crusty
Who knew Dr. Seuss drew from life?
Re: A rather strange beastie I discovered last night
Posted: Wed May 03, 2017 4:53 pm
by charlie g
Beautiful sheep-dog frolicking in the parking lot, err..I mean wonderful Gastrotich image capture, Pat. I've encountered perhaps three or four types of Gastrotrichs in my freshwater microscopy..it's good to see your shared encounter with one.
charlie guevara
Re: A rather strange beastie I discovered last night
Posted: Wed May 03, 2017 5:14 pm
by Pat Thielen
Crusty wrote:Who knew Dr. Seuss drew from life?
No kidding! I didn't even think of that!
Re: A rather strange beastie I discovered last night
Posted: Wed May 03, 2017 5:15 pm
by Pat Thielen
charlie g wrote:Beautiful sheep-dog frolicking in the parking lot, err..I mean wonderful Gastrotich image capture, Pat. I've encountered perhaps three or four types of Gastrotrichs in my freshwater microscopy..it's good to see your shared encounter with one.
charlie guevara
Thanks Charlie -- I do wish I was able to get a much cleaner image of the little guy, though. They really don't seem to like their picture being taken. And they are very busy.
Re: A rather strange beastie I discovered last night
Posted: Wed May 03, 2017 5:25 pm
by charlie g
1.5% methylcellulose is a very low cost 'viscosity tool' exactly for use with observing Gastrotrichs, water fleas, ciliates, all highly active protists and meiofauna are slowed down to point where you can even use your 100X oil-objective.
Try it..I have high mag images of Gastrotrichs only due use of 'viscosity tool' of 1.5%methylcellulose. Use it 50/50 by volume with your water sample. again, thanks for your microscopy, Pat. charlie guevara
