Mayorella & Difflugia acuminata

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NikonUser
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Location: southern New Brunswick, Canada

Mayorella & Difflugia acuminata

Post by NikonUser »

EDIT: was "2 for Ferry (for ID)"
A Mayorella sp. ?

Perhaps Paraeuglypha sp. (polarization)

Both from a local roadside ditch.
Image
Image
NU11147 NU11148
Last edited by NikonUser on Wed Nov 30, 2011 11:16 am, edited 1 time in total.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

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Mitch640
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Post by Mitch640 »

Nice and sharp naked amoeba. I'll make a gues on the shell as a difflugia acuminata, but will let Ferry verify it.

Have you seen his site yet. He's got a lot of images to help identify amoeba.

I like that polarized shot. He's lit up like a christmas tree. :)

NikonUser
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Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

Post by NikonUser »

Thanks Mitch.
The naked amoeba is DIC.
I thought the test had a 'stalk' at the base but I now think it is just a piece of extraneous material.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

Mitch640
Posts: 2137
Joined: Sun Aug 15, 2010 1:43 pm

Post by Mitch640 »

A stalk at the base? Do you mean the point at the left side of this image? That is a stalk, and some junk that has gotten snagged, or he glued onto the shell as camouflage. It's made from bits of quartz and sand, and in some of these Difflugia, it is hollow and open at the end. Some species even go so far as to make them hollow and open at the end, then find just the perfectly shaped pointed little chip of quartz to stick into the hole in the end.

They say these things can not see, but why would they go to the trouble of adding features to their houses that seem to be purely visual in nature? :)

Here is Ferry's Difflugia link. Very informative and he has some nice images and drawings.

http://arcella.nl/Difflugia
Last edited by Mitch640 on Tue Nov 29, 2011 6:08 am, edited 1 time in total.

Cyclops
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Post by Cyclops »

Wow excellent shots!!
Canon 5D and 30D | Canon IXUS 265HS | Cosina 100mm f3.5 macro | EF 75-300 f4.5-5.6 USM III | EF 50 f1.8 II | Slik 88 tripod | Apex Practicioner monocular microscope

Ferry
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Post by Ferry »

Beautiful pictures! The first one is a Mayorella species. The shape of the crystals, if present, could be useful for identification. The vesicular nucleus is very beautiful visible.
The second one is Difflugia acuminata, it has definitely a stalk or spine, which is hollow and often open, like a chimney.

NikonUser
Posts: 2693
Joined: Thu Sep 04, 2008 2:03 am
Location: southern New Brunswick, Canada

Post by NikonUser »

Good ID Mitch
Thanks Ferry for the definitive ID, I will be using the Difflugia image in an article for Micscape Magazine so nice to have an ID.
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Nikon camera, lenses and objectives
Olympus microscope and objectives

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