Term
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Definition
| The active feeding stage of a protozoan; vegetative state. |
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Term
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Definition
| The non-feeding infective stage; resistant to many environmental conditions. |
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Term
| These protozoans move by hair-like locomotory organelles called cilia. |
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Definition
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Term
| What are the hosts for Balantidium coli? |
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Definition
| Swine, man, primates, occasionally dogs. |
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Term
| What signature identifier can be used to diagnose Balantidium coli? |
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Definition
| The large kidney shaped macronucleus. |
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Term
| These protozoans use flagella for movement. |
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Definition
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Term
| What is the prepatent period for Giardia sp.? |
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Definition
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Term
| What diagnostics can be used to identify Giardia sp.? |
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Definition
Zinc sulfate floatation (gold standard)
Sheather's sugar floatation (distorts cysts; half moon appearance).
Direct exam.
ELISA
IFA |
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Term
| What is notable about the life cycle of Tritrichomonas foetus in cattle? |
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Definition
| It is transmitted to cows during coitus; bulls are permanent carriers. |
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Term
| These protozoans have a complex life cycle (asexual and sexual phase) in the definitive host and need to sporulate in the environment before they are infective. |
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Definition
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Term
| Describe the life cycle of coccidia. |
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Definition
| Infected animals pass unsporulated oocysts in feces; in the environment oocysts sporulate; after ingestion by DH, parasite enters intestinal epithelium and undergoes a series of complex intracellular stages; in a few days the DH will shed unsporulated oocysts into the environment. |
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Term
| If an animal has coccidia it may present with what notable symptom? |
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Definition
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Term
| The Isospora species will have what characteristic appearance on a standard fecal floatation? |
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Definition
| 2 sporocytes with 4 sporozoites. |
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Term
| The Eimeria species will have what characteristic appearance on a standard fecal floatation? |
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Definition
| 4 sporocysts with 2 sporozoites. |
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Term
| What drugs are best used to treat coccidia? |
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Definition
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Term
| Cryptosporidum sp. can be found in what hosts? |
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Definition
| The small intestine of several animals including man. |
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Term
| This protozoans oocysts are immediately infective when passed through fresh feces. |
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Definition
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Term
| The prepatent period for Cryptosporidum sp. |
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Definition
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Term
| What diagnostic techniques are used to identify Cryptosporidum sp.? |
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Definition
Modified acid-fast stain
Carbol fuchsin negative stain
Sheather's sugar floatation (oocysts are frequently overlooked)
ELISA |
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Term
| Cats are the definitive host for this protozoan, its zoonotic, and transmitted transplacentally to kittens. |
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Definition
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Term
| Describe the life cycle of Toxoplasma gondii. |
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Definition
| Infected cat passes oocysts in feces for 2 weeks; oocyst develops in environment and is ingested by IH; tissue from T. gondii will form cysts in muscle and CNS of IH; cats can serve as PH. |
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Term
| This protozoan is congenital to a baby if mother is exposed during pregnancy. |
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Definition
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Term
| Sarcocystis sp. is extremely pathogenic in which host? |
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Definition
| The intermediate hosts; ruminants pigs, horses. |
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Term
| This protozoan is responsible for Equine protozoal myeloencephalitis (EPM). |
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Definition
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Term
| This protozoan is transmitted transplacentally to puppies. |
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Definition
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Term
| What clinical disease might be observed in hosts infected with Neospora caninum? |
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Definition
Puppies: flaccid hind-limb paralysis.
Adults: Neurological
Bovine: abortion |
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