Protozoa Phylum Apicomplexa Flashcards

1
Q

Sporozoans

A

4600 species

all are parasitic

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2
Q

What is the name given to the cyst stage for Sporozoans?

A

Oocysts

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3
Q

What Sporozoans have veterinary significance

A
Cystoispora
Toxoplasma
Cryptosporidium
Babesia
Eimeria
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4
Q

What is the common term we call Apicomplexa?

A

Coccidia

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5
Q

What other species is Coccidia used to describe

A

Cystoisospora spp
Eimeria spp
Cryptosporidium spp
Toxoplasma gondii

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6
Q

Cystoisospora spp

A

A protozoal parasite of the small intestine of dogs and cats

AKA Isospora

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7
Q

What is the predilection site of Cystoisospora spp

A

The small intestine

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8
Q

What is the most commonly diagnosed diseases in puppies and kittens?

A

Coccidiosis

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9
Q

Is coccidiosis a problem in adult dogs?

A

Rarely

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10
Q

What is the diagnostic stage of coccidiosis and how is it diagnosed?

A

The oocyst

Fecal floatation

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11
Q

Toxoplasma gondii

A

The intestinal coccidian of cats

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12
Q

What is the definitive host of Toxoplasma gondii?

A

Cat

They only shed the oocysts for less than 2 weeks for their entire life

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13
Q

How do we diagnosis Toxoplasma gondii?

A

Fecal flotation

Immunologic tests

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14
Q

What is fecal flotation looking for?

A

Cysts

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15
Q

What are the Immunologic tests looking for?

A

Antibodies

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16
Q

How do humans get a Toxoplasma gondii infection?

A

Undercooked meat
Unwashed produce
Gardening
Contact with cat feces

17
Q

Are cats symptomatic for Toxoplasmosis

A

Usually asymptomatic intestinal infection

Usually a chronic infection

18
Q

If there is an acute infection of Toxoplasmosis what are the symptoms in cats?

A

Hepatitis
Seizures
Cachexia

19
Q

Is it common to find toxoplasma oocytes in infected cats?

A

No, because cats only shed for 1 to 3 weeks

20
Q

What are the two ways cats can get Toxoplasmosis?

A

Ingestion of paratenic host

Ingestion of oocytes from soil or contaminated objects

21
Q

What are some examples of paratenic hosts that carry Toxoplasmosis

A

Rodents
Birds
Mutton or pork in raw diet food that contains bradyzoites

22
Q

What are the three different stages of Toxoplasma gondii?

A

Oocytes
Tachyzoites
Bradyzoites

23
Q

Toxoplasma gondii Oocytes

A

Only develop in and shed by felids

24
Q

Toxoplasma gondii Tachyzoites

A

Rapidly dividing tissue stage

25
Toxoplasma gondii Bradyzoites
Slowly dividing, encysted tissue stage
26
What is the prepatent period of Toxoplasma gondii dependent on?
How the cats get Toxoplasma
27
The prepatent period when the cat ingests raw meat
3-10 days after tissue cysts
28
The prepatent period when the cat ingests oocyte from the environment?
19-48 days
29
How long does it take for Toxoplasma eggs to become infected after they are shed by the cats?
1 to 5 days | Survive for months to years
30
How does a human fetus contract toxoplasmosis?
Through the placental connection with its infected mother
31
Antibody testing in humans and cats
Check for antibodies, prior to exposure | Can't accurately predict oocyst shedding
32
Babesia canis
An example of a hemoprotazoan | Intracellular parasite of RBCs of dogs
33
What else is the pear-shaped body called?
Piroplasm
34
How do you diagnosis Babesia?
Stained blood smear | Inclusions on the RBC
35
What is the intermediate host of Babesia?
Ticks