Trematodes

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  1. What is another word for an unsegmented flatworm?
    trematodes
  2. What is a hermaphrodite?
    both male and female parts
  3. The first intermediate host of all the digenetic flukes is always a _____.
    snail
  4. Where are tremadotes found?
    near water
  5. What is typically the second intermediate host?
    fish, amphibian, anything that lives near water
  6. How are tremadotes diagnosed?
    large operculated ova seen with centrifugal sedimentation
  7. What are the different trematodes?
    • Fasciola hepatica
    • Paragonimus kellicotti
    • Alaria
    • Nanophyetus salmincola
  8. What are the large animal flukes?
    • Fascoila hepatica
    • Fascioloides magna
  9. Fasciola hepatica is a common _____ fluke.
    liver
  10. What is the intermediate host of Fasciola hepatica?
    semi-aquatic snail
  11. Describe the life cycle of Fasciola hepatica.
    • immature form leaves snail and encysts on water plants
    • ingested by definitive host
    • excysts (hatches)
    • migrates thru intestinal wall of definitive host
    • goes to the liver
    • goes to the bile duct
  12. How long does Fasciola hepatica migrate to the liver before maturing in the bile duct?
    6 - 8 weeks
  13. What can Fasciola hepatica cause?
    severe liver damage, may see clostridial disease
  14. What is bottle jaw?
    edema due to hypoproteinemia
  15. What is albumin?
    main protein in plasma
  16. How are humans infected with Fasciola hepatica?
    water
  17. What pathogenesis does Fasciola cause in cattle?
    bottle jaw
  18. What is the treatment for Fasciola hepataica?
    • Clorsulon
    • Albendazole
  19. How do we control Fasicola hepatica?
    • molluscicides (kill snails) with copper sulfate
    • keep stock off marshy lands
  20. Dogs and cats get Paragonimus kellicotti from ingesting _____.
    the intermediate host or transport host
  21. What is the pathogenesis of Paragonimus kellicotti?
    • 1st intermediate host is the snail
    • 2nd intermediate host is a crawfish
    • Definitive host are wild animals, dogs, and cats
  22. Paragonimus kelliotti is a _____ fluke.
    lung
  23. What can paragonimus cause?
    chronic lung disease
  24. How do you diagnosis Paragonimus kellicotti?
    large gold operculated egg in sputum using sugar flotation or cent. sedimentation
  25. What is the treatment for Paragonimus kellicotti?
    • Fenbendazole
    • Praziquantel
  26. Alaria is an _____ fluke.
    intestinal
  27. What animals are affected by Alaria?
    dogs and cats
  28. When do Alaria become pathogenic?
    when large numbers exist
  29. Describe the life cycle of Alaria.
    • snail is the first intermediate host
    • amphibian (tadpoles) are the second intermediate host
    • mice, rats, snakes, and birds may serve as a transport (paratenic) host
    • the adults infects in small intestines and the immature flukes infect the lungs
  30. How do you diagnose Alaria?
    large operculated eggs in feces from cent. sedimentation
  31. What is the treatment for Alaria?
    • Praziquantel
    • Epsiprantel
  32. Nanophyetus salmincola is _____ fluke.
    salmon poisoning
  33. What can the Nanophyetus salmincola fluke do?
    produce mild enteritis
  34. What does Nanphyetus salmincola cause?
    gastroenteritis and death
  35. What does Nanophyetus salmincola mimic?
    parvo
  36. What is the first intermediate host of Nanophyetus salmincola?
    snail
  37. What is the second intermediate host for Nanophyetus salmincola?
    salmon
  38. How do dogs get Nanophyetus salmincola?
    from ingesting raw trout and salmon
  39. How do you diagnose Nanophyetus salmincola?
    they are large operculated eggs
  40. Image Upload
    What is this?
    trematode
  41. Image Upload
    Life cycle of Digenetic Flukes
    • operculated egg hatches
    • penetrates snail and loses cilia
    • becomes a sporocyst - asexual reproduction
    • redia
    • cercaria
    • leaves snail and swims around to find either 2nd IH or encysts on vegetation
    • metacercariae eaten by DH
    • adult
  42. Image Upload
    What is this?
    adult trematode
  43. Image Upload
    What is this?
    trematode ova
  44. Image Upload
    What is this?
    trematode ova
  45. Image Upload
    What type of trematode is this?
    Fasciola hepatica
  46. Image Upload
    Life cycle of Fasciola hepatica
  47. Image Upload


    What type of trematode is this?
    Paragonimus kellicotti
  48. Image Upload
    What type of ova is this?
    Paragonimus kellicotti ova
  49. Image Upload
    Life Cycle of Paragonimus kellicotti
  50. Image Upload
    What type of trematode is this?
    Alaria
  51. Image Upload
    What type of trematode is this?
    Nanophyetus salmincola
  52. Image Upload
    Life cycle of Nanophyetus salmincola
  53. Image Upload
    What type of ova is this?
    Nanophyetus salmincola

Card Set Information

Author:
kris10leejmu
ID:
141748
Filename:
Trematodes
Updated:
2012-03-18 01:42:58
Tags:
Lab Tech
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Description:
Lab Tech
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