new rotifer (for me). ID suggestions?

Charles Krebs · Post by **Charles Krebs** » Wed Sep 01, 2010 6:58 pm

Large, but almost like a balloon... very little inside. Don't recall seeing one of these before. It appeared to anchor itself by a very thin strand at the tip of the foot and swung back and forth as it fed.

Jan Kros · Post by **Jan Kros** » Thu Sep 02, 2010 1:25 am

Hello Charles,

Very nice pictures as always.
I think that this organism is probebly Gastrophus hiptopus

Greetings from the Netherlands
Jan Kros

ABEL · Post by **ABEL** » Thu Sep 02, 2010 5:48 am

Very nice Carlos; but I am so ignorant as you respect this rotifer.

Charles Krebs · Post by **Charles Krebs** » Thu Sep 02, 2010 9:36 am

Jan,

Thanks! Not only did you put me on track as far as an identification, but in searching for a reference I came across a very nice site that I think will be very helpful for identification purposes in the future.

This creature:
http://cfb.unh.edu/cfbkey/html/Organism ... topus.html

"Key" site home:
http://cfb.unh.edu/cfbkey/html

rjlittlefield · Post by **rjlittlefield** » Thu Sep 02, 2010 10:12 am

Charles, thanks for the links.

There appeared to be a typo in your posting -- both links went to the same place, the one for the specific critter.

I edited the second link to point to what I think you intended. Please let me know if not correct. Thanks!

--Rik

Mitch640 · Post by **Mitch640** » Thu Sep 02, 2010 10:26 am

Very nice images Charles. The more I see, the more I question what life is.

And a great link you found too.

Charles Krebs · Post by **Charles Krebs** » Thu Sep 02, 2010 1:46 pm

Rik,
Good... thanks!. Need to remember the "copy" part before doing the "paste" part.

Mitch,

The more I see, the more I question what life is.

Well, now that you are peering through a microscope at least be prepared for the lines between animal/vegetable/mineral to get a little fuzzy.

Mitch640 · Post by **Mitch640** » Thu Sep 02, 2010 2:00 pm

Well, now that you are peering through a microscope at least be prepared for the lines between animal/vegetable/mineral to get a little fuzzy.

After over 4 years of intense interaction with birds, I was already questioning everything I ever heard about animal intelligence. Now, in just one week, I am questioning what is a plant and what is an animal, and I am seriously beginning to question who is looking at whom...

rjlittlefield · Post by **rjlittlefield** » Thu Sep 02, 2010 10:46 pm

Mitch640 wrote:Now, in just one week, I am questioning what is a plant and what is an animal, and I am seriously beginning to question who is looking at whom...

Excellent -- let me welcome you aboard again!

--Rik

Jan Kros · Post by **Jan Kros** » Fri Sep 03, 2010 3:35 am

Hello charles

thanks for the links

Greetings
Jan

verolet · Post by **verolet** » Fri Sep 03, 2010 9:33 am

Hi
very nice pictures
May be Asplanchnopus multiceps
Best regards
Michel

Charles Krebs · Post by **Charles Krebs** » Fri Sep 03, 2010 11:20 am

Michel,

Yes, that appears to be a good possibility (or perhaps Asplanchnopus dahlgreni). I should have measured it before posting. The body measures just over 650 micron, so much too big for Gastropus hyptopus.

http://www.nies.go.jp/chiiki1/protoz/mo ... asp-us.htm
http://rotifer.acnatsci.org/rotifer.php ... lanchnidae

http://www.nies.go.jp/chiiki1/protoz/mo ... gastro.htm