A marine diatom from the Northsea

Images made through a microscope. All subject types.

Moderators: rjlittlefield, ChrisR, Chris S., Pau

Jan l'Amie
Posts: 268
Joined: Tue Jul 26, 2011 11:32 pm
Location: The Netherlands
Contact:

A marine diatom from the Northsea

Post by Jan l'Amie »

Image
Last edited by Jan l'Amie on Mon Oct 17, 2011 9:49 am, edited 1 time in total.

Franz Neidl
Posts: 747
Joined: Wed Jan 14, 2009 11:59 am
Location: Italy

Post by Franz Neidl »

I think this is a Diatom - not a Radiolar.

Franz

Jan l'Amie
Posts: 268
Joined: Tue Jul 26, 2011 11:32 pm
Location: The Netherlands
Contact:

Post by Jan l'Amie »

Thanks, I'll change the title.

BJ
Posts: 354
Joined: Sat Sep 29, 2007 10:53 am
Location: England

Post by BJ »

Hi Jan and Franz,

I do not often get the opportunity these days to join you on the forum, but I am enjoying your marine postings.

This is a diatom, but an unusual view. It is a valve view of a single cell of a species of Bacteriastrum - I think that Franz posted a very nice view of a Bacteriastrum chain some time back.

As the setae lie in one plane, it could be either B. delicatulum or B. furcatum - but I am unable to decide which species. The cell has an unusually large number (18) of setae.

thanks for an unusual and crisp photo

best wishes

Brian

Jan l'Amie
Posts: 268
Joined: Tue Jul 26, 2011 11:32 pm
Location: The Netherlands
Contact:

Post by Jan l'Amie »

Franz and Brian thanks for the comments. I found quite a lot of them in the sample I took last sunday at the Dutch Northsea coast.
Here a picture of a (I think) more complete one.

Image

I also found some with the setae turned, so with the forked site against the ,,body,,. I will try to make a picture of one.

Greetings from the Netherlands
Jan

Charles Krebs
Posts: 5865
Joined: Tue Aug 01, 2006 8:02 pm
Location: Issaquah, WA USA
Contact:

Post by Charles Krebs »

Jan,

A very different perspective! This is one of those cases where the unusual angle of the photograph provide a very different appearance from what we customarily see, and adds a great deal of information to help us understand the morphology of the subject. (Thank you BJ for adding valuable identification info).

Jan l'Amie
Posts: 268
Joined: Tue Jul 26, 2011 11:32 pm
Location: The Netherlands
Contact:

Post by Jan l'Amie »

Thanks very much for the nice comments.

Post Reply Previous topicNext topic