Observation 5

          The observation began at 2:00 on Wednesday. The first organisms I saw in the micro aquarium were Euplotist (Patterson 124) swimming by the plant life. I saw one Euchlanis Rotafer (Pennak 171). Several necked amebas were seen along the edge of the plants. The amebas (Rainsis and Russell, 157) moved by slowly changing there shape. The whole aquarium was filled with motionless diatoms. After looking in Diatoms of the United States I identified these to be Ankistrodesmus diatoms (Patrick, Ruth, and Charles W. Reimer pg. 85).  After moving the observation to the sediment layer I saw an enormous Aeolosoma, possibly one the same ones I saw in observation four.
         The observation was moved to a camera microscope after looking through the sediment layer.
The camera microscope observation was not through the sediment, and was limited to around the plant life. the first identifiable organisms were small botos (Patterson, fig 67 pg 50), single celled organisms with two flagella  With the camera microscope I was able to get a closer look at the diatoms I mentioned earlier. It was here that I was able to identify them as Ankistrodesmus.

   (Fig, 1)

Under the camera microscope, more Euplotist were seen and A nematode (Rains and Russell 63) .
 (Fig. 2)
             
                Throughout the observations the organisms in the in the micro aquarium remained mostly the same.  Rotifers and Euplotest were seen fairly consistently. Overall both of these species saw growth. The major changes in the micro aquarium did not occur until observation four. In observation four both nematodes and Aeolosoma were first identified. Clearly these organisms had to be in the micro aquarium before observation but it was not until later that they grew and took a presence in the aquarium. This may be a result of the food pellet added a week before observation four. This added a source of carbon and may have feed these organisms allowing them to grow and take a presence In the aquarium.

Works Cited

Patterson DJ. 1992. Free-Living Protozoa, A Colour Guide. Washington DC: Manson Publishing.

Patrick, Ruth, and Charles W. Reimer. The Diatoms of the United States : Exclusive of Alaska and Hawaii. Philadelphia, PA: Acad of Nat. Sci., 1966. Print.

Pennak RW. 2001. Fresh-Water Invertebrates of the United States. New York (NY): The Ronald     Press Company.

Rainis KG and Russell BJ. 1996. Guide to Microlife. Danbury (CT): Franklin Watts Publishing.