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  1. Dog
    • Paragonimus kellicotti
    • Lung Fluke
    • Operculated
  2. Dog
    Paragonimus kellicotti
  3. Dog
    Paragonimus kellicotti
  4. Dog
    • Name: Paragonimus kellicotti
    • Common/Nickname: Lung fluke
    • Species: dogs, cats and rarely man
  5. Dog
    • Name: Alaria canis
    • Common/Nickname: Intestinal fluke
    • Egg is yellow looking, thin shelles and partially embryonated. X100
  6. Alaria sp. egg
  7. Dog
    Alaria canis X410
  8. Alaria eggs collapsed by osmotic pressure of the solution used for flotation.
  9. Alaria canis in small intestine, attached by suckers
  10. Cow
    Fasciola hepatica (more tapered in shape than Alaria canis)
  11. Cow
    • Name: Fasciola hepatica 
    • Common/Nickname: Common liver fluke
    • Species: cattle, sheep, goats, swine
  12. cow
    Fasciola hepatica egg
  13. Sheep
    Location of eggs:
    • Name: Fascioloides magna
    • Common/Nickname: Large American like fluke
    • Species: Sheep, goats and rarely horses
    • Location of eggs: Because cattle are the normal hosts, the egg usually remains in the liver.
    • Dicrocoelium dendriticum
    • Fascioloides magna

  14. Name:
    • Name: Dicrocoelium dendriticum
    • Common/Nickname: Lesser or lancet liver fluke
    • Smaller or nearly transparent
  15. Dicrocoelium dendriticum eggs
  16. Fluke infected liver with fibrotic biliary canals
  17. Fluke involved biliary system of the caudate lobe
  18. Dicrocoelium dendriticum egg
  19. Dicrocoelium dendriticum eggshell, notice operculum (arrow) high power
  20. Liver cross section w/enlarged calcified bile duct resulting from chronic infection with Fasciola hepatica, the common liver fluke
  21. Specimen of common liver fluke Fasciola hepatica
  22. Liver damage due to chronic infection with Fasciola hepatica
  23. Low lying poorly drained pastures in the Gulf Coast region of the U.S. are ideal habitat for the maintenance of the ______________ which is the intermediate host of Fasciola hepatica.
  24. dog
    Living mesocercaria of Alaria canis
  25. Alaria sp. flukes have mult intermediate host that live as adults in the intestines of _____.
    Cercarias pass from the ________ and enter the ______ in which the metacercariae stage develop. The final host eats _________.
    • Carnivores (dogs, cat, weasel, minks, coyotes)
    • Snails
    • Tadpoles, frogs or other mammals
    • mice, rats or racoons.
  26. coyote
    Stained and mounted speciment of Alaria canis collected from a coyote.
  27. Sheep
    Condition occurs in what regional location?
    Schistomaes are the best known fluke because of the serious disease they cause in man. Schistosimiasis still rages unchecked in tropic and arid countries. This slide shows gross pathologic chgs assoc w/sheep Schistosoma matheei infection with gray lung of inf sheep on the left compared to normal lung on rt.
  28. Close-up inflammation and pigmentation as a response to fluke tracks made through the ducts.

  29. Name:
    Condition name:
    • Name: Pseudosuccinea columella
    • Common/Nickname: American ribbed fluke
    • Host: Snail
    • Condition name: Fascioliasis
  30. Sheep grazing near stream - an area and situation ideal for the transmission of Fasciola hepatica to potential hosts.
  31. Deer
    Lesions of Fascioloides magna in excised deer liver, adult worms in incised cyst are visible.
  32. Cow
    Adult Fascioloides magna trematodes and tract marks in a bovine liver.

  33. Name
    Dicrocoelium dendriticum is an elongated narrow fluke measuring about 2X8 mm. Known as the "lancet or lesser liver fluke". It occurs in the bile ducts and liver. Slide shows a stained adult - oral and ventral suckers, the digestive ceca, the testes, ovary, vitelline glands and uterus are readily seen.

  34. Name of parasite that affects man in Far East:
    Name of dog parasite:
    • Name of parasite that affects man in Far East: Paragonimus wetermani
    • Name of dog parasite: Paragonimus kellicotti
    • This slide depicts an adult Paragonimus migrating on the trachea of a dog.
  35. Illustrates the rarely seen but heavily infected encysted lung of an infected cat.

  36. Name:
    Rickettsia name:
    Adult Nanophytes salmincola fluke. The fluke inhabits the intestines of the dog, fox, racoon and other fish (salmon) eating mammal which ingests and harbors both fluke and the etiological agent of "Salmon Poisoning" a rickettsia, Neorickettsia helminthoeca.
    • Oocyst of:
    • A - Strongyle egg
    • B - Strongyloides westeri egg
    • C - Eimeria leukarti 
  37. Farm animal
    Oocyst of Eimeria leukarti, 2 Strongyle eggs and an egg of Strongyloides westeri
  38. Cow
    Oocyst of Eimeria zuernii, one of the more pathogenic of the 11 species of coccidian of cattle in North America
  39. Cow
    Oocysts of Eimeria zuernii X410
  40. Cow
    Giardia bovis a flagellate protozoan of cattle. This mobile forms are taken from the contents of the small intestines.
  41. Cow
    Giardia bovis showing the 2 posterior flagella
  42. Cow
    Giardia bovis showing the ventral sucking disc and the two nuclei X410
  43. Cow
    Giardia bovis - oblique view to show the ventral concavity and the posterior flagella. X410
  44. Sheep
    Oocyst of Eimera ovina, one of the more pathogenic species of coccidia of sheep in North America.
  45. Sheep
    Oocyst of Eimera ovina. A polar cap is present at the end of the cyst. X410
  46. Pig
    Trichomonas suis. The swine nasal trichomonad. The appearance is also characteristic for species occurring in feces from the most domestic animals
  47. Pig
    Trichomonas suis X800 Slides are made from direct smears using mild saline solution or lactated ringers solution.
  48. Sheep
    Oocysts of Eimeria ovina - Coccidian of swine. Also the eggs of Oesophagostomum sp (nodular worm)
  49. Cow
    Oocysts of Eimeria sp. 3 species are shown.
  50. Pig
    Name of the condition:
    May cause dysentery in what species:
    Balantidium coli, a ciliated protozoan found in the cecum and colon of swine, causing balantidosis. This is the mature form (trophozoite) which maybe seen in feces of swine having diarrhea. This species may cause dysentery in man and monkeys. X100
  51. Pig
    Balantidium coli trophozoite (mature form) X410
  52. Dog
    Sporulated oocysts and sporocysts of Isospora bigemina, a coccidium of dogs, cats, foxes. The large oocysts are those of Isospora ohioensis.
  53. Sporulated oocysts and sporocysts of Isospora bigemina
  54. Oocysts of Isospora felis (F), I. rivolta (R) Toxoplasma gondii (T) and Isospora cati (C) the 1st 3 coccidia are excreted unsporulated whereas I. cati is excreted sporulated usually as a free sporocyst.
  55. Cat
    Isospora felis oocysts sporulated (A) and unsporulated (B) and hookworm egg (C)
  56. Dog
    Oocysts of Isospora canis, one shows the beginning to sporulation X410
  57. The characteristic face of Giardia is produced by the nucleus, nucleoli and the centroile rod.
  58. Fresh cyst of Giardia show the thin, smooth outer cyst wall, and by focusing up and down one can see the internal structures.
  59. The wobbling of Trichomonas trophozoites best seen on fresh saline solution. Rippling of the undulating membrane are flagellate movements detected by microscopy.
  60. Trophozoites of Entamoeba can be found in fresh dog feces and ID by the appearance of the nucleus which is characteristic of amoebae. The organism sometimes becomes invasive causing severe dysentery.
  61. Dog
    This parasite can usually be seen in dog feces in conjunction with what other parasite?
    The large cysts of Balantidium coli are usually seen in dog feces in conjunction with Trichuris infection
  62. Unlike many protozoan organisms, coccidian oocysts float readily with little distortion in most flotation solutions

  63. What is the division called?
    What is the time period that a sporocyst can form?
    The process of sporulation with coccidia occurs quickly in warm humid conditions and the sporocysts can form in 24-48 hrs in feces.
  64. Cow
    Although oocysts of the Eimeria type occur in dogs, their pathogenicity is not known.
  65. Cow
    Development of mature Eimeria sporocysts is proceeded by division of the intact single cell of the oocyst into 4 cells
  66. Fungal spores with oocysts in an unidentified species of animal.
  67. Cow
    Direct smear with numerous oocysts (Eimeria) of varied size and species. This slide is from a ruminant. Note the twigs and hay (cellulose) undigested.
  68. Cow
    Oocysts of Toxoplasma (upper rt) and Eimeria oocysts (lower rt). Toxoplasma not commonly seen in feces from farm animals.

  69. Name the stage of cell found in rabbit feces
    Oocysts of rabbit feces
  70. Dog
    Oocysts from dog. Isospora canis. Note that there is mild variation even among oocysts of the same species.

Card Set Information

2014-07-11 23:22:31
Trematodes Parasitology Veterinary Technology Protozoan

Trematodes, Protozoans
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