Protoplasmic connections to the test can be seen at several locations.
BHS DIC 40x S Plan, 1.25x intermediate lens, 2.5x relay lens. Flash.
NUM101036
Inside an Arcella test
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Inside an Arcella test
This character had a reasonably pale test that allowed me to take a peek inside. No idea what all the vacuoles are; does appear to be a green desmid somewhere in the OOF protoplasm.
Protoplasmic connections to the test can be seen at several locations.
BHS DIC 40x S Plan, 1.25x intermediate lens, 2.5x relay lens. Flash.
NUM101036
Protoplasmic connections to the test can be seen at several locations.
BHS DIC 40x S Plan, 1.25x intermediate lens, 2.5x relay lens. Flash.
NUM101036
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
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
Mitch:
Yes, my garage flat-tray aquarium is still providing lots of material. I leave the lamp on for 24 hrs, mainly to prevent the whole lot freezing.
I sucked-up what I thought was some filamentous algae yesterday and it turned out to be about 1,000 Volvox of all sizes.
DIC is incredible, my old system is good but the Olympus BX51 that ABEL uses is almost unbelievable (his recent Nematode). I can't see myself ever using anything but DIC for this aquatic stuff.
My old finite Olympus system recommends regular S Plan objectives.
The older finite Nikon system has special CF N Plan DIC objectives; I don't know if these are obligatory or whether you could use any CF N Plan.
Yes, my garage flat-tray aquarium is still providing lots of material. I leave the lamp on for 24 hrs, mainly to prevent the whole lot freezing.
I sucked-up what I thought was some filamentous algae yesterday and it turned out to be about 1,000 Volvox of all sizes.
DIC is incredible, my old system is good but the Olympus BX51 that ABEL uses is almost unbelievable (his recent Nematode). I can't see myself ever using anything but DIC for this aquatic stuff.
My old finite Olympus system recommends regular S Plan objectives.
The older finite Nikon system has special CF N Plan DIC objectives; I don't know if these are obligatory or whether you could use any CF N Plan.
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
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
This looks like Arcella vulgaris or Arcella discoides to me. You can see food vacuoles, contractile vacuoles and gas bubbles.
The discus like shape prevents Arcella from turning around with the help of its pseudopodia if the pseudostome looks into the sky. To overcome this problem Arcella species can build gas bubbles that control their buoyancy and help them to turn around in case of an accident.
The discus like shape prevents Arcella from turning around with the help of its pseudopodia if the pseudostome looks into the sky. To overcome this problem Arcella species can build gas bubbles that control their buoyancy and help them to turn around in case of an accident.
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fpelectronica
- Posts: 1808
- Joined: Fri Feb 19, 2010 3:56 pm
- Location: España
Beautiful picture. I made some pointers to show you the way 
Most Arcella-species have two nuclei, but this one has several, indicated by the black arrows. There are undoubtedly more, but these ones are visible.
Arcella discoides is known to have up to 65 nuclei!
You can see two clear vacuoles (V) which remove water from the body mass.
A food vacuole (FV) digests food.
Ferry
Most Arcella-species have two nuclei, but this one has several, indicated by the black arrows. There are undoubtedly more, but these ones are visible.
Arcella discoides is known to have up to 65 nuclei!
You can see two clear vacuoles (V) which remove water from the body mass.
A food vacuole (FV) digests food.
Ferry
Thanks guys, Ecki, Francisco, and Ferry.
I meant to ask Ecki which 'circles' were the parts he recognized; thanks Ferry for labeling them. I was expecting only 1 nucleus and thus was really wondering what those 'circles' you labeled as nuclei were.
I meant to ask Ecki which 'circles' were the parts he recognized; thanks Ferry for labeling them. I was expecting only 1 nucleus and thus was really wondering what those 'circles' you labeled as nuclei were.
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
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
Thanks Ferry, a nice image.
I currently have lots of these amoebas in my samples but have yet to see one with air bubbles.
I currently have lots of these amoebas in my samples but have yet to see one with air bubbles.
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
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
I have seen them with air bubbles in them, but of course, I thought they were holes in the shell. I actually watched them form in one Arcella, and it happened very fast. It looked very similar to this last image posted, with 5 bubbles which formed in about one second. It was very fast and I thought it was the shell 'burning' from chemicals or something in the water.