Protozoa and Rickettsia

Question 1

3 primary phyla of Protozoa

Answer 1

Sarcomastigophora, Apicomplexa, Ciliophora

Question 2

Asexual reproduction

Answer 2

binary fission, schizogony, budding

Question 3

sexual reproduction

Answer 3

syngamy, conjunction

Question 4

stage of protozoal life cycle that is capable of feeding, movement, and reproduction

Answer 4

trophozoite

Question 5

long whip-like structure

Answer 5

flagella

Question 6

short flagella arranged in rows or tufts

Answer 6

cilia

Question 7

temporary projections of and retractions of body wall

Answer 7

pseudopods

Question 8

small snakelike waves that form cell membrane

Answer 8

ungulatory ridges

Question 9

describe cyst stage

Answer 9

prevents desiccation, occurs when protozoa lacks nutrients, low O2, lack of water, low pH, accumulation of waste, overcrowding

Question 10

move via pseudopodia, and have both trophozoite and cyst stage

Answer 10

amoebas

Question 11

one or more flagella in trophozoite stage

Answer 11

flagellate

Question 12

flagellated protozoa recovered from diarrhea in dogs and cats but can also be in normal feces (zoonotic)

Answer 12

Giardia

Question 13

location of Giardia

Answer 13

small intestine

Question 14

trophozoite of Giardia

Answer 14

rounded leaf shape, “eyes”, tail

Question 15

cyst stage of Giardia

Answer 15

opalescent looking egg

Question 16

parasite of humans and dogs, banana shaped with flagellum, 3-10x the size of RBC

Answer 16

Trypanosoma cruzi (Trypanosomes)

Question 17

mucocutaneous leishmania forming skin sores

Answer 17

Leishmania braziliensis

Question 18

visceral form of leishmania that affects several internal organs

Answer 18

L. donovani and L. infantum

Question 19

long, slender organisms with single flagellum attached to dorsal surface that creates a “sail” (lil purple dude)

Answer 19

Trichomonads

Question 20

Trichomonads in reproductive tract of cattle (resides in prepuce of bulls and vagine, cervix, and uterus of cows)

Answer 20

Tritrichomonas foetus

Question 21

clinical signs of T. foetus

Answer 21

infertility, spontaneous abortions, and pyometra

Question 22

shape of T. foetus

Answer 22

pear shaped with 3 anterior flagella

Question 23

Trichomonads found crop (pouch like enlargement on birds)

Answer 23

Trichomonas gallinae

Question 24

clinical signs of T. gallinae

Answer 24

necrotic ulcerations of esophagus, crop, and proventriculus

Question 25

infects turkeys, chickens, pheasants, and other avian species

Answer 25

Histomonas meleagridis

Question 26

in turkeys, H. meleagridis causes infectious enterohepatitis aka...

Answer 26

black head

Question 27

primarily human parasite found in tropical regions with no clinical significance

Answer 27

Entamoeba histolytica

Question 28

parasite found in sm. intestines of dogs and cats (egg shaped with 1 or 2 "yolks")

Answer 28

Cystoisospora coccidiap

Question 29

prepatent period of coccidia

Answer 29

7-14 days

Question 30

intestinal coccidian of cats, very harmful to pregnant women

Answer 30

Toxoplasma gondii

Question 31

coccidian of sm. intestines of wide variety of animals, zoonotic, picture with a bunch of them grouped together

Answer 31

Cryptosporidium

Question 32

another coccidian of sm. intestines

Answer 32

Sarcocystis

Question 33

intracellular parasite of RBCs in dogs aka piroplasm

Answer 33

Babesia canis

Question 34

what does piroplasm mean

Answer 34

pear shaped

Question 35

intracellular parasite of RBCs in cats, rapidly fatal, causes multiple organ failure

Answer 35

Cytauxzoon felis

Question 36

intracellular, malaria like parasite affecting dogs (presents as little dot on the edge of RBC)

Answer 36

Hepatozoon canis and H. americanum

Question 37

which is more severe? H. canis or H. americanum

Answer 37

H. americanum

Question 38

coccidian found in sm. intestines of horses

Answer 38

Eimeria leuckarti

Question 39

what cause malaria in mammals, birds, and reptiles

Answer 39

Plasmodium sp.

Question 40

ciliated protozoan in large intestine in swine

Answer 40

Balantidium coli