Protozoa Flashcards
What is coccidiosis caused by?
Cystoisospora
What form of Leishmania affects several internal organs, including the spleen, liver, and bone marrow?
Visceral form
How does Giardia transmit to another host?
Passed through the feces
Gets into the water or picked up from the contaminated ground
Ingested by either new host or same host
What type of protozoan is Giardia?
Flagellated
What animal is the definitive host of Toxoplasma?
Cats
What is the prepatent period of coccidia?
7-14 days
The Mucocutaneous form of Leishmania is caused by what species?
L. braziliensis
What is the protozoa that has a “smiley face?”
Giardia
What for of Leishmania causes skin sores?
Mucocutaneous
Tritichomonas foestus resides in what part of the body within the bull and cow?
Prepuce of the bull
Vagina, cervix, and uterus of cows
What type of egg is oval and slightly resembles a boat?
Giardia
Trichomonas gallinae causes what in birds?
Necrotic ulcerations in the esophagus, crop and proventriculus
Reproduction of protozoa can be?
Asexual
Sexual
What are the organelles for locomotion in protozoa?
Flagella
Cilia
What are the three forms of Leishmania?
Mucocutaneous
Cutaneous
Visceral
How is Babesia transmitted?
Ticks
Blood transfer from dog bites
Blood transfusions
Transplacental transmission
What is a Hemoprotozoa?
Blood protozoa
Leishmania is what type of protozoa?
Hemoprotozoa
Protozoa that are found in fecal material are known as what kind of protozoa?
Intestinal protozoa
What is the prepatent period for Isospora suis?
4-8 days
The sand fly carries what stage of Leishmania?
Promastigotes
What are Apicomplexans, there are about 4,600 species
Sporozoans
How is Leishmania transmitted?
Phlebotomus
Lutzomyia ( sandflies)
How is Babesia diagnosed?
By observing the basophilic, pear-shaped trophozoites in the RBC’s on a stained blood smear.
Leishmania lifecycle
Parasite is transmitted via a bite from insect vector
Promastigotes are phagocyted by the host’s macrophages
Promastigotes multiply by binary fission and develop into amastigote stage
Released when cell ruptures
Amastigotes are phagocyted by other macrophages
In tissues and picked up flies
Develop into promastigotes in sandflies
The visceral form of Leishmania is caused by what species?
L. donovani
L. infantum
What clinical signs can Tritrichomonas foestus cause?
Infertility
Spontaneous abortion
Pyometra
What is the name of the coccidian that parasitizes the small intestine of swine, especially young piglets?
Isospora suis
What is the parasite of the reproductive tract of cattle?
Tritrichomonas foetus
What stage do the promastigote develop into when inside the macrophage?
Amastigote
This intracellular parasite is found within the erythrocytes of dogs
Babesia
What obligate intracellular gram-negative bacteria is transmitted through a tick?
Rickettsia
What protozoa should women be concerned about contracting with they are pregnant?
Toxoplasma
What is a trophozoite?
Motile feeding stage of the protozoal parasite
What are the symptoms of Cryptosporidium?
Watery diarrhea Stomach cramps or pain Dehydration Nausea Vomiting Fever Weightloss
What protozoa is found in crop washes and crop swabs from pigeons, doves, and poultry?
Trichomonas gallinae
What are the two morphological forms of giardia?
Motile feeding stage
Resistant stage
Toxoplasma is caused by what species of protozoa?
Coccidia
What is the resistant morphological form of Giardia?
Cyst
What kind of hosts do ticks serve as and what do the RBCś contain?
Intermediate
Trophozoites
