Tuesday, November 8, 2011

This week, I first noticed that there was no food pellet.  This caused an absence of concentration of organisms, but their numbers overall, had grown.  The paramecia, most of all, had divided and were about double in number from the first observation.  Several new organisms have also appeared.  The most abundant of the newer organisms was the diatom.  Diatoms are phytoplankton that form algae and contain chloroplasts.  I found diatoms scattered all throughout the MicroAquarium during this observation.  There was also an increase in seed shrimp.  Another organism I found, but only found one of, was the Arcella.

Tuesday, November 1, 2011

Second post

This week, I went straight to the microscope, and began observing the aquarium for noticeable changes. Another food pellet was placed in the tank.  The first organism I saw was a rotifer philodina, which was anchoring itself to the wall of the tank.  I noticed a few more of these.  There were also a few paranemae, single-celled protists with a long flagellae used for movement.  It might be worth noting that I lost some water while viewing the aquarium, too, but it was replaced. Also, I misspelled the caption on the peranema photo.