Monday, November 5, 2007

Week 3

Observations:

The feeding seemed to spur a large population growth in Copepods. There are many of them in different stages of life. They range in size from extremely small to a little larger. Some of the Copepods have two egg sacs attached to their sides, so I expect to see an even greater population of copepods next week.


I found two dead seed shrimp and one live one at the bottom of the tank in the Wolfia.

In a molted shell of a seed shrimp, I saw multiple single celled protists that look like little worms. These are some type of Cilliate.

I also found another rotifer that is about the same size as the Copepod. It resembles a drawing of a Noteus, as found in Henry Baldwin Ward's Freshwater Biology.


Another new find was an organism that resembles an arm reaching out with a suction cup on the end. These are called Vorticella. I found one in the Wolfia along the bottom of the tank and two a little higher up.

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