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Animal-like Protists (*Protozoans)

Animal-like Protists (*Protozoans). *First animal General Characteristics: eukaryotic, unicellular to multicellular , diverse live primarily by ingesting food thrives in all types of aquatic environment (wet soil and watery environment inside animals)

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Animal-like Protists (*Protozoans)

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  1. Animal-like Protists (*Protozoans) • *First animal • General Characteristics: • eukaryotic, unicellular to multicellular , diverse • live primarily by ingesting food • thrives in all types of aquatic environment (wet soil and watery environment inside animals) • some are parasitic in nature • polyphyletic Trichomonas vaginalis

  2. Phylum Ciliophora (Ciliates) Paramecium sp. • Cell body covered with cilia • Nuclei differentiated into macro- and micronuclei • Cilia are also differentiated into unique structures; • Most ciliates are free living or non-parasitic while the only parasitic ciliate of humans is called Balantidium coli which causes dysentery • many species

  3. Stentor sp.

  4. Paramecium sp.

  5. Paramecium sp. Stentor sp.

  6. Phylum Zoomastigina/ Mastigophora (Flagellates) Euglena sp. • 1 - 3 flagella emerging from a canal • Most species are free living or non-parasitic • with or without chloroplasts • Pellicle covering • rod-like to ovoid in shape • Freshwater

  7. Trypanosoma sp.

  8. Giardia sp. is a mastigophoran which causes giardiasis. It is characterized by prolonged diarrheal disease of humans. Other diseases include the african sleeping sickness, & Chaga’s disease (Trypanosoma), urinary and vaginal infection (Trichomonas)

  9. Phylum Sarcodina (Sarcodes; Amoebas) • Cell body “plastic” with amoeboid movement • Foraminiferans contain radially-arranged axopodia (amoeboid feet) • Amoebae move by means of pseudopodia or false feet • Found on rocks, mud or at the bottom of a pond or ocean

  10. Sarcodina Feeding 1 Sarcodina Feeding 2

  11. Amoeba can cause amoebic dysentery (Entamoebahystolytica)

  12. Phylum Sporozoa/ Apicomplexa (Sporozoans; Apicomplexan) • All are parasitic • They are named for an apparatus at their apex that is specialized for penetrating host cells and tissues • Malaria in the Philippines is endemic in Palawan group of islands Plasmodium sp.

  13. Choanoflagellates: protistan ancestor of the ANIMAL KINGDOM • Individuals clustered at the end of a simple or branching stalk; fresh water • Cell body 8-30 μm long, cysts with thick wall

  14. Sources: • Protist Information Server (The Graduate University for Advanced Studies, and by the "Bio-Resource" project "Fundamental research and development for databasing and networking culture collection information" at JST (Japan Science and Technology Corporation). http://protist.i.hosei.ac.jp/Protist_menuE.html • UCMP Web Lift (University of California, Berkeley University of Paleontology) http://www.ucmp.berkeley.edu/index.html • Campbell NA, Reece JB, and Simon EJ. 2004. Essential Biology. 2nd ed. Pearson Education Inc. 464 pp. • Miller KR and Levine J. 2002. Biology. Prentice Hall. 1114 pp. • Tortora GJ, Funke BR and Case CL. 1995. Microbiology: An Introduction. 5th ed. The Benjamin/ Cummings Publishing Company, Inc. 801 pp. • Prepared by: • Niño A. Espinas, B. Sc. • DOST-PSHS, Diliman Quezon City • Philippines

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