Canine/Feline- Introduction to protozoa Flashcards
Protozoa are what kind of organisms?
Unicellular, eukaryotic animals
How are Protozoa classified?
based on their mode of locomotion
Protozoa Locomotion is accomplished by what?
Pseudopodia
Flagella
Gliding movements
Cilia
What is a Zoite?
functional unit of protozoanontogeny
=development
What is a Sporozoite?
infective form found in a
sporulated oocyst
What is Trophozoites?
form which feeds and grows
What is Tachyzoites
form which divides rapidly
What is Bradyzoites
form which divides slowly
Oocysts
.
Sporulation
.
Sporulated oocyst
.
Cyst
.
What are types Protozoa Asexual reproduction ?
Binary fission, budding, schizogony (merogony)
What are asexual reproduction characteristics for protozoa?
Protozoa that divide asexually have a short generation time
Exponential increase in the number of zoites
Destruction of host cells in proportion to the infection
Stops after a fixed number of repetitions
What are types Protozoa Sexual reproduction ?
Gametogony or sporogony
What are sexual reproduction characteristics for protozoa?
Merozoite becomes either a Macrogametocyte (macrogamont) and then a macrogamete OR Microgametocyte (microgamont) and then several
microgametes
When a microgamete fertilizes a macrogamete a zygote forms; then a wall forms around this and it becomes an oocys
What is Eucoccidiorida?
Parasites of epithelial cells
Sexual and asexual reproduction occurs in epithelial cells
Asexual stages causes damage
Examples of Eucoccidiorida?
Eimeria Cystoisospora Isospora Cryptosporidium Hepatozoon Sarcocystis Neospora Toxoplasma
What is Piroplasmorida?
Parasites of blood cells
Ticks as vectors
Sexual reproduction takes place in ticks
Examples of Piroplasmorida?
Babesia
Theileria
What is Phylum: Ciliophora?
Locomotion by cilia
Examples of Phylum: Ciliophora?
Balantidium
