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Ciliates |
All about ciliates |
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Paramecium with symbiotic algae. 150 µ. A second common ciliate is there also. |
Small Ciliate. 30 µ. Very fast. 20x Dark field. |
Typically group of cilia (cirri?) on one side. Moves in sudden jerks. |
45 µ Darkfield 20x. slight 'kidney' shape. |
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Same as above. Phase contrast 40x. |
Vorticella30 µ wide. 40x phase |
120 µ More visible cilia at ends |
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Flagellates |
All about Flagellates |
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Euglena with 'eyespot' at right hand end. 50 µ |
Phacus. Typically fast moving. Moves toward blunt end. Rotates during motion showing they are flat. 18 µ |
Nice pics of big Chlamydomonas 45 µ showing nice red eyespot. Desmid alga in background in LH picture. Can sometimes see 2 flagellae at eyespot end. |
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Peranema. 25 x 13 µ without flagellum. It moves with the flagellum in front. 16x. Phase contrast. Unusual flagellate as it is not photosynthetic. |
Two Peranema with ‘green’ Paramecium and bacteria (Spirilla) |
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Amoebae (Amebas) |
All about Amoebae |
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Amoeba. Taken over 3 minutes. Dark field 20x (bowl in back garden) |
By Phase contrast |
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Darkfield 20x |
10x Phase contrast condenser |
16x Phase Contrast |
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Amoeba from Clive’s mud on a tray in garden (May 4th). All samples had many of these. The pics are all of the same Amoeba (cannot identify species). The main body is about 50 µ. The ‘spikes’ are sometimes not visible in darkfield. NB 10x objective is not designed for phase contrast. Most pics are photoshopped with autolevels. |
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This is a Heliozoan, possibly Actinphrys. Non motile. Darkfield 10x and 40x phase contrast. 80µ diameter. ‘Spikes’ not moving. |
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Algae. Many flagellates are algae. Here I have included the immobile ones (mainly desmids I think. |
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Desmid. Darkfield. Very common |
A Desmid. Non-motile. About 30µ wide. Closterium. There is a Phacus for comparison. |
Rod-shaped. Motile. 38 x 6 µ. Do not know what this is. Very common in my samples. |
Green globe. Not moving. The protrusions do not move fast like cilia. 40x. 75µ |
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Unknowns |
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From back garden bucket. Not moving. 70 µ. Pictures below were over half an hour. 3 main features. At RH end 2 sets of cirri. Moving. Between them but not elsewhere were moving cilia. At opposite end were 2 cirri which seemed to be joined by a dark arc between them. There was a band of cilia like a tunnel below the clear ‘vacuole’. The pictures are In time order. |
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1. Dark field 20x
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2. 20x using P2. Phase contrast (PC) condenser but not PC objective lens
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3. 40x. PC. NB Spirilla
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4. 16x PC ‘Gullet’ is near vacuole. Start of small blebs where Cirri were on the left
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5. Same with blebs bigger. 16x PC
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6. Same with bigger blebs front and back.
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7. Blebs burst. Cirri more obvious. Vacuole disappearing.
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8. 40x phase contrast. Cirri and cilia more obvious. No movement
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Multicellular organisms. Both of the examples below are similar size to larger protozoa and are common. The rotifers are usually anchored onto solid material. |
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Rotifers or wheel animals.. About rotifers. |
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Rotifer 200 µ. Species Microdina.
Behind the 2 ‘wheels’ you can see the muscular pharynx that is like a bird’s crop, chewing food
Phase contrast Dark field |
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A Gastrotrich. Very fast, free swimming. Almost size of rotifer. 2 spikey tails at the left and mouth at right. |
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