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19 Cards in this Set
- Front
- Back
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Phylum Sarcomastigophora has 2 Subphyla _________ and _________
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Sarcodina (Ameba)
Mastigophora (Flagellates) |
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Characteristics of Subphylum Mastigophora
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Move via flagella
Utilize longitudinal binary fission Mucosal type live in mucosa or lumen Blood/tissue type live in blood or tissues |
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Which flagellates are transmitted by fecal cysts?
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Giardia
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Transmitted by direct or sexual contact?
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Trichomonas
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Transmitted via arthropod vectors?
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Leishmania and Trypanosoma
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Most frequent agent identified in water borne outbreaks of disease
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Giardia lamblia
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Life cycle of Giardia
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Cysts are ingested-->cysts excyst-->trophozoites develop in small intestine
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What type of diarrhea does Giardia lamblia cause?
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Fatty; malabsorption diarrhea
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When do you see signs of Giardia?
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About 1 week after infection
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How is Giardia diagnosed?
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Appearance of trophozoites/cysts in smears or cysts in fecal float; must examine 3 samples over a 1 week period b/c cysts are shed intermittently
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Which floatation solution is best for Giardia? What can be added to the slide to enhance the appearance of cysts?
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Zinc-Sulfate
Iodine |
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Is Giardia zoonotic?
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Most likely no since the genotypes shared by dogs and humans has not been found in dogs in the US
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Treatment for Giardia
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Metronidazole
Binzimidazoles (fenbendazole, febantel, albendazole) |
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Usually nonpathogentic, normally luminal parasites, divide by longitudinal binary fission, no true cyst stage, transmitted by direct contact
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Order Trichomonadida
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A venereal disease in cattle, bulls are asymptomatic carriers, infertility, early embryonic death, abortion, and pyometra
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Tritrichomonas foetus
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How is T. foetus diagnosed?
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Preputal scrapping and culture from bulls rest for 1-2 weeks prior
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Treatment of T. foetus
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No good tx just ways to manage
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Other affected species of T. foetus?
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Cats and Dogs and Pigs
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Do cats NEED to be treated for T. foetus?
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No either treat or untreated will resolve in ~2 years and treatment may prolong diarrhea. Many treated cats still positive
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