Sunday, November 18, 2012

Bibliography


The Chironomid Home Page [Internet].  [TCHP] The Chironomid Home Page; 2012 [cited 2012 November 18]. Available from: http://insects.ummz.lsa.umich.edu/~ethanbr/chiro/

Patterson, D.J. Free-Living Freshwater Protozoa:A Color Guide. Washington, D.C. Manson Publishing 2009

Pennack, Robert W. Fresh-Water Invertebrates of the United States: Protozoa to Mollusca. 3rd ed. New York. John Wiley & Sons, Inc. 1989

Botany 111 Fall 2012 [Internet].  [McFarland] Botany 111 Fall 2012; 2012 [cited 2012 November 25].  Available from http://botany1112012.blogspot.com/

Week Four

This was the last week of observation.  I was surprised at just how much my tank had changed over the last month.

The Utricularia gibba L. had all died but the  Amblystegium sp. had flourished.

The food pellet eventually fell to the bottom of the tank and was mostly disintegrated.

I saw a lot more colopse this week than I have in the past, although I could not find any vorticella this time most of the water fleas seemed to have died.

We did make one new discovery though.

Adult Midge- Family: Chironomidae.  Commonly used as fisherman's bait.  (TCHP 2012)


Sunday, November 11, 2012

Week Three

11-8-2012

This week I got to use the camera microscope to photograph my aquarium.  (details about the camera and computer program will be posted online.  I will share them as soon as they are made available to me)

I saw a bunch of water fleas.

McFarland identified the two-tailed rat-like creature I keep seeing- a Rotifer. He also told me that the stuff on the bottom of the tank is worm castings (poop), recycling the debris.

The photos that I took will be added later this week after they have been processed.  But here are their descriptions:


Photo 1: Vorticella
(Patterson pg 113 fig. 232)


Photo 2: Water Flea- Cladocera (order name)
(Pennack pg 405)
juvenile.  top image- bottom view, bottom image- profile view


Photo 3: Epilaxis
(Patterson pg 141 fig. 311)


Photo 4: Raphidiophrys
(Patterson pg 173 fig 405-407)


Photo 5: Coleps
(Patterson pg 162 fig 375)



We also saw a Halteria (Patterson pg 139 fig 305) but it was moving so fast we could not get a photo of it.

Bibliography:
Patterson, D.J. Free-Living Freshwater Protozoa:A Color Guide. Washinton, D.C. Manson Publishing 2009

Pennack, Robert W. Fresh-Water Invertebrates of the United States: Protozoa to Mollusca. 3rd ed. New York. John Wiley & Sons, Inc. 1989

Tuesday, November 6, 2012

Week Two

11-1-2012

*On Friday, October 26, 2012 one Beta Food Pellet was added to my MicroAquarium.
"Atison's Betta Food" made by Ocean Nutrition, Aqua Pet Americas, 3528 West 500 South, Salt Lake City, UT 84104. Ingredients: Fish meal, wheat flower, soy meal, krill meal, minerals, vitamins and preservatives. Analysis: Crude Protein 36%; Crude fat 4.5%; Crude Fiber 3.5%; Moisture 8% and Ash 15%. (McFarland 2012)

I was able to identify the food pellet and noticed that there were quite a few small organisms swimming around it.  

There was a lot of movement today!  The organisms were small but they were swimming around very fast.  They were mostly found in the middle of the tank but the top and bottom had a few drifters as well.

I was only able to definitely identify one organism.  That was the Vorticella

Vorticella- 
              -Located near bottom on fern.
              -"A common peritrich ciliate.  The only cilia that are present are the weathers of feeding cilia made of an upper band, which corresponds to a membranelle and generates currents of water for feeding; and a lower band which corresponds to the undulating membrane.  Food is passed through a buccal cavity before being packaged within food vacuoles.  Many peritrichs are supported on stalks.  This makes the vulnerable to predators.  Some protection is provided by stalk=contractility, afforded b a spirally contractile thread or spasmoneme.  The contractile elements of the spasomneme pass into the body.  Differential interference contrast. (Patterson pg 113)

I used the BioCam posters to make possible identifications for some of the other organisms that I saw.  Here are my hypotheses: 

Lots of small swimmers- Protozoa maybe? Colpidium?  

Large complex organism- Located in middle.  Maybe a Daphnia?