Observation 2 --- Week 4 (observation time: 9th Nov 2012)

In this observation, i find some of new organisms and also observe some from the first observation and compare the differences between these two observation. 

1. Chironomus 

this is what i see one week later, on 9th Nov i am lucky to find an live leaca of Chironomus

 Fig 3.3

 for the larva, it moves fast and it likes to flip its body from tail to head almost at the same position, the picture below was what i took at the same position

 Fig 3.4

Referance:

Ward HB, Whipple GH. 1918. Fresh-Water Biology. New York: Jonh Wiley & Sons, INC. Fig 1384, 915p.  

2.Bursaria 

 this is also an organism moves rapidly around, this is the picture of it near the plant

 

Fig 8.1

The picture below shows Bursaria doing some exchange with other organism 

 Fig 8.2

Then, we take a close look of this organism, you can see the three or more tails at the back of this organism

Fig 8.3

 Referance:

    Patterson DJ.1992. Free-Living Freshwater Protozoa. Washingon DC: ASM Press. Fig 318, 143 p.

3.Ameoba

this is an organism having very irregular shape, see the picture below

 Fig 9

I make a small movie to show how Ameoba exchange substance in or out of itself

 Referance:

    Patterson DJ.1992. Free-Living Freshwater Protozoa. Washingon DC: ASM Press. Fig 194-197, 198 p. 

4.Blepharisma

this is a snail-like  organism, it moves relatively slow. It likes to live near the soil. 

   

Fig 10.1

we can see the inside structure clearly for this organism,  lots of food vavuoles inside. 

 Fig 10.2

Referance:

    Patterson DJ.1992. Free-Living Freshwater Protozoa. Washingon DC: ASM Press. Fig 324-326, 146 p.   

5.Arcella

this is a single cell organism, it keeps stationary most of time when i observe it under microscope. however, when i take this picture, i find there this something attach on the Arcella, and both of them have identical shape. i have no idea what is it, but i think it maybe just something come out from Arcella or Arcella just doing the cell division.

 Fig 11

Referance:

    Patterson DJ.1992. Free-Living Freshwater Protozoa. Washingon DC: ASM Press. Fig 171-173, 91p.