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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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Presentation Transcript
slide4

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

slide7

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

slide8

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)

slide9

Spirometra

  • 2. Cestodes / pseudophyllidean
slide10

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?

slide11

Giardia canis

Left: trophozoite

Right: cyst

slide12

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

slide14

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.

slide16

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)

slide17

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

slide20

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

slide22

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)

slide24

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 ?

slide25

Strongyloides spp

1st stage larva

slide26

This was found in the liver of a pig at necropsy.

What is it?

What genus does it represent?

slide27

Hydatid cyst

Echinococcus spp

slide28

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

slide30

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

slide31

Dipylidium caninum

What type of intermediate host would you find the larval stage?

What is this larval stage?

slide33

This tapeworm was recovered from the small intestines of a cat at necropsy. Identify to genus.

proglottids

bothria

Proglottids (close-up)

slide35

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

slide36

Physaloptera spp

spiruroidea

slide39

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

slide40

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)

slide41

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?

slide43

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

90 – 120 microns

slide45

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

slide47

These worms were recovered from the cecum of dog at necropsy. Identify to genus.

esophagus

adults

Stained adult

slide50

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

slide51

What do Canine Occult HW tests detect?

What additional tests would be useful for suspected feline heartworms?

slide52

K-9: Uterine antigen of female Dirofilaria immitis

Feline: Antibody to Dirofilaria immitis

slide53

Identify this ova found in a dog presented to you with respiratory problems.

59 - - 60 microns

slide55

These organisms were found in a blood smear of a dog presented to you with severe anemia.