Phylum Apicomplexa

Question 1

Babesia

Answer 1

1. Cause babesiosis in mammals
2. Transmitted by infecting eggs of the ticks
3. B. Bigeminia infects many ruminants
   B.Canis infects canines

Question 2

Hepatozoan

Answer 2

1. 300 species
2. Many terrestrial vertebrates
3. 2 species found ln U.S
   (H. Americanum and H.Canis)
4. Dogs are infected unseen they ingest the tick

Question 3

Eimeria

Answer 3

1. 1000 of species
2. Varies from no illness to rapid death
3. Eimeria Tenella
   Lives in cecum in chicken
   High mortality rates

Question 4

Cyclospora
Sarcocystis

Answer 4

-cause of diarrhea in humans
- zoitocysts occur in muscles of several vertebrates

Question 5

Plasmodium

Answer 5

1. Mosquitoes inject sporozoites into vertebrate host which enters liver
2. Undergo schizogony and release merozoites
3. Remain RBCS and produce more merozoites or become macrogametocytes and microgametocytes

Question 6

Plasmodium pt2

Answer 6

4. Gameocytes are ingested by mosquito become gametes and fertilization produce ookinetes
5. Ookinetes undergo sporogony and produce sporozoites

Question 7

Haemoproteus

Answer 7

1. Usually bird and reptile parasites
2. Sexual phases in insects other than mosquitoes
3. Usually not fatal

Question 8

Leucocytozoon

Answer 8

1. Parasites of birds
2. 60 species
3. Infects ducks, geese , and swans and black files