Frontonia acuminata ciliate

fpelectronica · Post by **fpelectronica** » Wed Dec 31, 2014 11:23 am

Hello
A ciliated I think, without security, it could be Bryometopus.
I appreciate help in correctly identifying

http://youtu.be/zdiUiRShYoE

Francisco

Bruce Taylor · Post by **Bruce Taylor** » Wed Dec 31, 2014 3:26 pm

Hi, Francisco. It's Frontonia acuminata (a lemon-shaped Frontonia, similar to F. atra but usually smaller, with a pointed posterior and dark pigmentation confined mostly to a spot in the anterior). F. angusta is similar in size, but typically lacks the dark spot.

The mouth is visible at several points. You can see the paroral membrane flapping at 0:03, and the shape of the mouth is clearly visible at 0:56, right after the defecation (which seems to occur via the postoral suture...very interesting!)

Jacek · Post by **Jacek** » Thu Jan 01, 2015 12:32 am

Very nice

Bruce Taylor · Post by **Bruce Taylor** » Thu Jan 01, 2015 9:18 am

I took a couple of stills from your video, to point out certain features.

Some identifying characters:

Frontonia are equipped with excretory pores, but this fellow seems to be defecating through the postoral suture.

fpelectronica · Post by **fpelectronica** » Fri Jan 02, 2015 9:52 am

Thanks Bruce
I correct the title.
Thanks Jacek.

Protos · Post by **Protos** » Mon Jan 05, 2015 3:11 am

Excellent as usual !
F. acuminata seems to be common at this period of the year . I see it often and other people as well.

Phil

fpelectronica · Post by **fpelectronica** » Mon Jan 05, 2015 3:19 am

Thanks Protos

escocat · Post by **escocat** » Mon Jan 05, 2015 3:31 am

A great video

fpelectronica · Post by **fpelectronica** » Mon Jan 05, 2015 12:20 pm

Thanks escocat

Francisco