Exam II - Order Piroplasmorida Flashcards Preview

RUSVM Parasitology > Exam II - Order Piroplasmorida > Flashcards

Flashcards in Exam II - Order Piroplasmorida Deck (14)
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1
Q

What is the name of the condition associated with *Babesia *spp?

A

Canine babesiosis, canine piroplasmosis

2
Q

What is/are the host(s) for Babesia spp?

A

Dogs. Occasionally humans

3
Q

Describe the appearance of Babesia spp trophozoites

A

In stained blood smears, you can see trophozoites in red blood cells. Trophozoites are round, ovoid, elongate, amoeboid, pyriform, club-shaped trophozoites, in pairs as pyriform merozoites or in tetrads as cruciform merozoites and measure 5 um

4
Q

What is/are the site(s) of infection for Babesia spp?

A

Erythrocytes

5
Q

Describe some clinical signs associated with Babesia spp

A

depression, anorexia, anemia, splenomegaly

6
Q

How would you diagnose Babesia spp?

A

Trophozoites in peripheral blood smear using Giemsa stain

7
Q

What are some treatment & prevention options for Babesia spp?

A

Antiprotozoal therapy is effective, but not approved in USA. Tick control is important (Rhipicephalus sanguineus)

8
Q

Describe the Babesia spp life cycle

A

Dog is inoculated by tick vector. Babesia sporozoites enter the bloodstream and multiplty by shizogony in erythrocytes. Host cells rupture and new organisms penetrate new cells.

Ticks become infected by ingesting infected blood from an infected dog. This causes tick eggs in female tick to become infected, which continue to multiply to infect tick larva, eventually causing small pyriform bodies in the salivary cells, and forming sporozoites, which are inoculated into a new host.

Entire process takes about 7 days

9
Q

What does Babesia spp sexual reproduction take place?

A

in ticks

10
Q

What is/are the host(s) for Theileria (Cytauxzoon) spp?

A

Bobcats

11
Q

Describe the appearance of Theileria (Cytauxzoon) spp

A

Small organisms (1-2 um) in red blood cells

12
Q

Which tick is responsible for transmitting Theileria (Cytauxzoon) spp to the cat?

A

Amblyomma americanum

13
Q

What is/are the site(s) of infection for Theileria (Cytauxzoon) spp?

A

Blood

14
Q

What are some clinical signs associated with Theileria (Cytauxzoon) spp?

A

Pyrexia, anemia, icterus, dehydration, death in a few days

Decks in RUSVM Parasitology Class (124):