slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
What are Protozoa? PowerPoint Presentation
Download Presentation
What are Protozoa?

Loading in 2 Seconds...

play fullscreen
1 / 19

What are Protozoa? - PowerPoint PPT Presentation


  • 213 Views
  • Uploaded on

What are Protozoa?. proto = first zoa = animals. single-celled eukaryotic organisms. Combined Protein Consensus Tree. From S.L. Baldauf (1999) Am. Nat. 154:S178. What are Protozoa?. proto = first zoa = plant/animal?. Unicellular eukaryotes protozoa algae yeast/fungi slime molds.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'What are Protozoa?' - destiny-compton


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

What are Protozoa?

proto = first

zoa = animals

single-celled eukaryotic organisms

slide2

Combined Protein Consensus Tree

From S.L. Baldauf (1999) Am. Nat. 154:S178

slide3

What are Protozoa?

proto = first

zoa = plant/animal?

  • Unicellular eukaryotes
  • protozoa
  • algae
  • yeast/fungi
  • slime molds
protozoan life styles
Protozoan Life Styles
  • absorb solutes (osmotrophy)
  • ingest particulates (phagotrophy)
    • predation on bacteria or other protozoa
    • pinocytosis (fluid uptake)
  • photosynthetic (autotrophy)
  • combinations (heterotrophy)

free-living vs. symbiosis

slide15

Protozoan

Diversity

  • >200,000 named species
  • ~10,000 parasites
  • ~20 human pathogens
slide17

Protozoan Taxonomy

  • confused, controversial and constantly changing
    • originally based on motility (light microscope)
    • ultrastructural (electron microscope) criteria used since 1960’s
    • molecular data can help with evolutionary relationships
  • monophyletic groups
    • descended from common ancestor
    • kinetoplastids, apicomplexa, ciliates
  • polyphyletic groups
    • multiple ancestors
    • amebas and flagellates

Genus + species

slide18

What are Protozoa?

  • unicellular eukaryote
  • ?
  • ?
  • ?
  • extremely diverse

But not simple!