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SMALL ANIMAL PARASITE REVIEW

SMALL ANIMAL PARASITE REVIEW. This egg was recovered from a feline fecal flotation. I.D. to genus and species. Toxocara cati. This worm was recovered from the small intestines of a puppy that died of severe anemia. Identify to genus and species.

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SMALL ANIMAL PARASITE REVIEW

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  1. SMALL ANIMAL PARASITE REVIEW

  2. This egg was recovered from a feline fecal flotation. I.D. to genus and species.

  3. Toxocara cati

  4. This worm was recovered from the small intestines of a puppy that died of severe anemia. Identify to genus and species. Ant. End male post. end Enface view

  5. Ancylostoma caninum

  6. This “parasite” was found in a rat’s liver that you were necropsying. 1. What is it?

  7. Strobilocercus (cysticercus, bladder worm). Larval stage of Taenia taeniaformis, a cyclophyllidean tapeworm

  8. This parasite was recovered from a routine fecal flotation of a fecal sample taken from an 8-month-old cat during a routine health maintenance exam. This egg measures ~ 60 microns. Identify to genus. What major group of parasites does it represent? (Be specific)

  9. Spirometra • 2. Cestodes / pseudophyllidean

  10. These parasites were recovered in a ZNSO4 Flotation (sp gr 1.18) in feces of apuppy. The pups are housed in a kennel. The owner says some of the puppies have been having intermittent, mucoid, blood-flecked diarrhea. Identify to genus What stage is present on left? What stage is present on right?

  11. Giardia canis Left: trophozoite Right: cyst

  12. These worms were recovered from the small intestine of a 3 month-old puppy at necropsy. Identify to genus and species In situ Anterior end

  13. Toxocara canis

  14. Identify this parasites found in a fecal flotation of a cat experiencing CNS symptoms. The ova/oocyst measures 10 – 12 microns. The stool was recovered from the cat’s litterbox and may thus not be fresh.

  15. Toxoplasma gondii

  16. What is the best flotation media to recover Toxoplasma oocysts from a fecal? a. NaNO3 b. Regular sugar (sp gr 1.21) c. Sheather’s Sugar(sp gr 1.31) d. ZnSO4 (spg 1.18)

  17. Sheather’s Sugar. ( spin down method, remove coverslip put on a slide and allow to sit for an additional 10 minutes)

  18. Identify this worm recovered from the small intestines of a cat at necropsy. Identify to genus.

  19. Taenia spp

  20. This egg was recovered in a Formalin/Ethyl acetate sedimentation of feces from a 13-yr-old debilitated cat presented to you for treatment. The egg measures 27 – 30 microns. Identify to genus

  21. Amphimerus

  22. This egg was recoverd from a fecal exam of a 6-month-old dog with mucoid diarrhea. Identify to genus. (the egg measures 70 – 89 microns)

  23. Trichuris vulpis

  24. This larvae was found in a fresh fecal sample taking from a cat presented to you with watery, projectile, voluminous diarrhea. Identify to genus. What stage is this ?

  25. Strongyloides spp 1st stage larva

  26. This was found in the liver of a pig at necropsy. What is it? What genus does it represent?

  27. Hydatid cyst Echinococcus spp

  28. These parasites were found in a fecal flotation of a sample taken from a 3-week-old puppy acquired from a local pet shop. Identify to genus and species. Measure 30 + microns

  29. Isospora canis

  30. The egg, worm, and larval stage seen here is representative of which parasite? It was found in the small intestines of a dog at necropsy. Identify to genus. egg Ant. end Larval stage segment

  31. Dipylidium caninum What type of intermediate host would you find the larval stage? What is this larval stage?

  32. Invertebrate host is Ctenocephalides spp Cysticercoid

  33. This tapeworm was recovered from the small intestines of a cat at necropsy. Identify to genus. proglottids bothria Proglottids (close-up)

  34. Spirometra mansonoides

  35. Worms like these were found attached to the stomach mucosa of a cat at necropsy. Identify to genus. What superfamily does this worm represent? Anterior end Male posterior end

  36. Physaloptera spp spiruroidea

  37. Identify these worms found fecal washes of the small intestines of a dog at necropsy.

  38. Echinococcus spp.

  39. Both of these eggs were recovered from a fecal flotation of puppy. Which egg, when larvated, can cause “ocular larval migrans”? Which egg when it becomes a 3rd stage larvae could cause “cutaneous larval migrans”. Identify each egg to genus. 80 – 90 microns 56 – 65 microns

  40. Toxocara canis (egg on left): ocular larval migrans Ancylostoma braziliense (egg on right) Cutaneous larval migrans (cannot differentiate from A. caninum on the basis of size; Uncinaria is 10u larger)

  41. What parasite caused the wart-like lesions seen here at the tracheal bifurcation of a dog? Is the 1st stage larva shown here consistent with the diagnostic stage passed in the feces of the above parasite?

  42. Filaroides spp. YES

  43. This egg was recovered from the fecal of a cat presented to you with coughing episodes? Identify to genus. 90 – 120 microns

  44. Paragonimus kellicotti

  45. Which 1st stage larva, passed in a fecal sample from a cat is consistent with that of Aelurostrongylus ( cat lungworm) ?

  46. Larva on right is consistent with Aelurostrongylus spp.

  47. These worms were recovered from the cecum of dog at necropsy. Identify to genus. esophagus adults Stained adult

  48. Trichuris vulpis

  49. What is a Knott’s test?

  50. This test recovers microfilaria from whole blood. It kills and straightens microfilaria and lyses the RBC’s, therefore making it easier to differentiate Dirofilaria vs. Dipetalonema

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