Parasit protozoa pt 6 Flashcards
Hepatozoon spp. host
-dog
Hepatozoon spp. ID
-Gamonts in blood cells
Hepatozoon spp. site of infection: schizonts
-in various tissues
Hepatozoon spp. site of infection: Gamonts
circulating white blood cells
Hepatozoon spp. CS: H. canis transmitted by R. sanguineus
-sub clinical infection
Hepatozoon spp. CS: H. americanum transmitted by A. Maculatum
severe disease, joint pain, myositis
Hepatozoon spp. Diagnosis
- Parasites in peripheral blood
- Examination of muscle tissue at biopsy or necropsy
Hepatozoon spp. treatment/prevention
- no satisfactory treatment
- tick control
Babesia canis host
dogs
Babesia canis ID
-trophozoites or merozoites in red blood cells
Babesia canis site of infection
erythrocytes
Babesia canis CS
- depression
- anorexia
- anemia
- splenomegaly
Babesia canis Diagnosis
-Trophozoites or merozoites in peripheral blood smear (Giemsa)
Babesia canis treatment and prevention
- Antiprotozoal therapy effective but not approved in USA.
- Tick control - R. sanguineus
Babesia gibsoni vs babesia canis
-similar to B canis but smaller
Babesia bigemina host
cattle
Babesia bigemina ID
trophozoites or merozoites in red blood cells
Babesia bigemina causes
- Texas tick fever
- Rhipicephalus (Boophilus) annulatus- cattle fever tick
Babesia bigemina site of infection
erythrocytes
Babesia bigemina path/lesion/CS
- Clinical signs arise from destruction of the red blood cells
- sever anemia or even death
Babesia bigemina Diagnosis
- stained blood smears (trophozoites or merozoites)
- serology (chronic infections)
Babesia bigemina treatment/prevention
- antiprotozoal remedies
- tick control
what is unique about Babesia bigemina
- inverse age susceptibility
- older animals more susceptible
- older animals chronic infection
Cytauxzoon felis hosts
-cats, bobcats
Cytauxzoon felis ID
-small organisms (merozoites 1-2 microns in red blood cells
