Again, I spiked the Lake Ladora sample, after day 2, with a solution that would hopefully bring out more rare protozoa - especially amoeba!!!
Just some general comments here! I came across the thin elongayed giant Spirostoma in Lake Ladora after spiking the water! Pic As you can see from the picture, it resembles S. minus quite a bit! However from the length, it is generally 0.9 mm to 1.4 mm! So, that would seem a bit long for S. minus! Maybe it is just a longer variety? The magnification in the picture is 100 times! The small amoeba Pic is magnified 500 times and is usually roundish when not moving and is 30 to 40 um in diameter! The larger more grain amoeba Pic is also magnified 500 times! It is also roundish when not moving! It is around 75 to 80 um in diameter!
VIDCAPS From Day 4 Lake Ladora at the Rocky Mountain Arsenal!!
QuickTime Movies from Day One and Two from Lake Ladora!!!
A thin elongated giant Spirostoma in action! Seems to have set bend points in the body for sharp turning. Or is it the radius of the turn that decides the bend points?
The cillia of the thin elongated giant Spirostoma in action!!
A small amoeba has short jerky movements!!
A larger, more grainy amoeba! Seems to have 3 types of movement! First it begins to reverse its flow in the pseudopodia it is flowing in! Then seems to break a menbrane fairly easily for a new pseudopodia to flow in that direction! The second is straight, fluid flowing in a straight direction - either fast or slow! The third is when it begins to throw out psuedopodia in many a direction and finally breaks out in one direction! Seems to take some effort to break the membrane at that place!
Lots of Paramecium in one place! Some undergoing conjugation! They generally seem to be feeding!
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This page last updated on
July 26, 2004.