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Parasites

Parasites. Dr. N. Matthew Ellinwood, D.V.M., Ph.D. Presented by Schontonia Davis March 5, 2014. Iowa State University College of Agriculture and Life Sciences. What are Parasites?. “An organism that lives on or in a host organism and gets its food from or at the expense of the host.”

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Parasites

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  1. Parasites Dr. N. Matthew Ellinwood, D.V.M., Ph.D. Presented by Schontonia Davis March 5, 2014 Iowa State University College of Agriculture and Life Sciences

  2. What are Parasites? • “An organism that lives on or in a host organism and gets its food from or at the expense of the host.” • http://www.cdc.gov/parasites/about.html • Many often serve as vectors for many disease

  3. Parasites • Life cycle may include many different stages • E.g., eggs, larvae, nymphs, pupae, and adults • And different hosts • the larval or juvenile stages are found in intermediate host(s) • The adult stage are found in the definitive host

  4. Parasites • Important phyla • Arthropoda • Nematoda • Plstyhelminthes (flatworms) • Sarcomastigophora (Protozoa kingdom) • Apicomplexa

  5. Arthropoda

  6. Arthropoda

  7. Arthropoda

  8. Nemotoda

  9. Toxascaris leonina • Common name: Ascarid/roundworm • Size of adult: 6-17 cm in SI • Host: Dogs & Cats http://www.thepetcenter.com/exa/ascarids_3.jpg http://images.google.com/imgres?imgurl=http://www.uga.edu/~lam/kids/worms/Pics/round.jpg http://www.beaglesunlimited.com/Photos/CanineRoundworms.jpg

  10. Trichuris vulpis • Common name: Whipworm • Size of adult: 3-8 cm in cecum • Host: Dogs http://www.angelhealingcenter.com/Paras12.gif cal.vet.upenn.edu/paralab/images/labimage/lab4/4_18.gif&imgrefurl http://images.google.com/imgres?imgurl=http://www.path.cam.ac.uk/~schisto/Pic

  11. Ancylostoma caninum • Common name: Southern Hookworm • Size of adult: 8-16 mm in SI • Host: Dogs http://www.animalhealth.bayer.ca/content/pictures/Ancylostoma%20Caninum.jpg http://bioweb.uwlax.edu/zoolab/Table_of_Contents/Lab-4b/Hookworm_1/Lab_4b-21a.jpg

  12. Platyhelminthes

  13. Protozoa Kingdom

  14. Giardia canis • Common name: None • Flagellated protozoa • Size of organism: 10 x 18 µm • Hosts: Dogs, cats, humans, etc. http://www.nih.go.jp/niid/para/atlas/images/giardia-trph.jpg

  15. Giardia in Motion • http://www.youtube.com/watch?v=j1sOJUw5Eo0 • http://www.youtube.com/watch?v=-yIHkq9R5_c&feature=endscreen&NR=1

  16. Coccidia Quick Facts • Causes: • Diarrhea • Hemorrhagic enteritis • Poor growth • Occurs during very stressful events (i.e. weaning)

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