Thursday November 13

On Thursday, November 13th, I made my final microaquarium observation.

The first thing I noticed about the aquarium was that it was covered with colonial algae which caused some problems viewing the other organisms.
In previous blogs I mentioned that there was a large number of Tubelleria,and last week was surprised the number had lowered.During this observation,I noticed there were only a few Tubelleria.
I also stated last week there was an organism, which I could not identify, that was green and shaped like a footprint. This week there were many more this week so I asked Mr. McFarland if he could identify specifically what these organisms were. We gathered that they were actually Parameciums that had incorporated green algae into thier body.The algae incoporated is single celled algae named Chlorella. This also gives cause to the small amount of Paramecium that I thought there were,but in fact the Parameciums had just taken on a new shape and color.There were still a few of Parameciums without the incorporated algae.
During my first observation,I observed a Ostracod that wasn't visible in the following weeks.I didn't know if the Ostracod had died and the debris was hidden in the dirt at the bottom or if the Ostracod was just hidden. It turns out it must have been hidden in the dirt because I spotted it during this observation,and it has gotten much larger.
There were still a large number of Rotifers as there were in previous weeks,the size and movement was identical to previous weeks.
I spotted some Euplotes,but nothing in comparison of previous weeks. The size and movement seemed to be the same as in previous weeks as well.

There was only one somewhat new organism that I identified this week, the Paramecium that had incorporated algae into its body.I found this to be the most interesting case in the Microaquarium observation. All the organisms were familiar to me,but the most obvious change in the aquarium was the algae.